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JavaWeb大作业：特效页面

在这里插入图片描述

对于功能以及实现的同学们，可以尝试一下把页面做的更漂亮，多加一些特效，使得界面更好看。

特效页面：有需要的可以添上

说明：必须要引老师发的AdminLTE的css、img、plugins包哦！！！而且项目格式要如下哦~

image-20201129143241972

<1>：超炫酷3D轮播图样式

界面特效效果：

在这里插入图片描述

页面html代码如下：注意：需要把你要展示的图片放到img目录下哦。并且更改一下代码，把代码的图片换掉。

全部代码如下：

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<!DOCTYPE html>
<html>

<head>
    <!-- 页面meta -->
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">




    <title>Hi~ 欢迎使用易宿管理系统哦~</title>
    <style type="text/css">
        * {
            margin:0;
            padding:0;
        }
        ul,li,ol {
            list-style:none;
        }
        body {
            perspective:1000px;
        }
        .pre img {
            width:200px;
            height:150px;
            position:absolute;
            transition:all 1s ease;
        }
        .pre div {
            width:200px;
            height:150px;
            margin:10px;
            cursor:pointer;
            position:relative;
            transform:rotateX(-20deg) rotateY(20deg);
            transform-style:preserve-3d;
            margin:300px auto 0;
        }
        .pre .box1 {
            animation-name:hd;
            animation-duration:5s;
            animation-iteration-count:infinite;
            animation-timing-function:linear;
        }
        @keyframes hd {
            25% {
                transform:rotateY(90deg) rotateX(-30deg);
            }
            50% {
                transform:rotateY(180deg) rotateX(0deg);
            }
            75% {
                transform:translateY(200px) rotateX(90deg);
            }
        }.box1 img:hover {
             box-shadow:0 0 20px rgba(81,203,238,1);
         }


    </style>
    <link rel="stylesheet" href="./plugins/bootstrap/css/bootstrap.css">
    <meta name="description" content="AdminLTE2定制版">
    <meta name="keywords" content="AdminLTE2定制版">







    <!-- Tell the browser to be responsive to screen width -->
    <meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
    <!-- Bootstrap 3.3.6 -->
    <!-- Font Awesome -->
    <!-- Ionicons -->
    <!-- iCheck -->
    <!-- Morris chart -->
    <!-- jvectormap -->
    <!-- Date Picker -->
    <!-- Daterange picker -->
    <!-- Bootstrap time Picker -->
    <!--<link rel="stylesheet" href="../../../plugins/timepicker/bootstrap-timepicker.min.css">-->
    <!-- bootstrap wysihtml5 - text editor -->
    <!--数据表格-->
    <!-- 表格树 -->
    <!-- select2 -->
    <!-- Bootstrap Color Picker -->
    <!-- bootstrap wysihtml5 - text editor -->
    <!--bootstrap-markdown-->
    <!-- Theme style -->
    <!-- AdminLTE Skins. Choose a skin from the css/skins
       folder instead of downloading all of them to reduce the load. -->
    <!-- Ion Slider -->
    <!-- ion slider Nice -->
    <!-- bootstrap slider -->
    <!-- bootstrap-datetimepicker -->

    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>

    <![endif]-->








    <!-- jQuery 2.2.3 -->
    <!-- jQuery UI 1.11.4 -->
    <!-- Resolve conflict in jQuery UI tooltip with Bootstrap tooltip -->
    <!-- Bootstrap 3.3.6 -->
    <!-- Morris.js charts -->
    <!-- Sparkline -->
    <!-- jvectormap -->
    <!-- jQuery Knob Chart -->
    <!-- daterangepicker -->
    <!-- datepicker -->
    <!-- Bootstrap WYSIHTML5 -->
    <!-- Slimscroll -->
    <!-- FastClick -->
    <!-- iCheck -->
    <!-- AdminLTE App -->
    <!-- 表格树 -->
    <!-- select2 -->
    <!-- bootstrap color picker -->
    <!-- bootstrap time picker -->
    <!--<script src="../../../plugins/timepicker/bootstrap-timepicker.min.js"></script>-->
    <!-- Bootstrap WYSIHTML5 -->
    <!--bootstrap-markdown-->
    <!-- CK Editor -->
    <!-- InputMask -->
    <!-- DataTables -->
    <!-- ChartJS 1.0.1 -->
    <!-- FLOT CHARTS -->
    <!-- FLOT RESIZE PLUGIN - allows the chart to redraw when the window is resized -->
    <!-- FLOT PIE PLUGIN - also used to draw donut charts -->
    <!-- FLOT CATEGORIES PLUGIN - Used to draw bar charts -->
    <!-- jQuery Knob -->
    <!-- Sparkline -->
    <!-- Morris.js charts -->
    <!-- Ion Slider -->
    <!-- Bootstrap slider -->
    <!-- bootstrap-datetimepicker -->
    <!-- 页面meta /-->

    <link rel="stylesheet" href="plugins/bootstrap/css/bootstrap.min.css">
    <link rel="stylesheet" href="plugins/font-awesome/css/font-awesome.min.css">
    <link rel="stylesheet" href="plugins/ionicons/css/ionicons.min.css">
    <link rel="stylesheet" href="plugins/iCheck/square/blue.css">
    <link rel="stylesheet" href="plugins/morris/morris.css">
    <link rel="stylesheet" href="plugins/jvectormap/jquery-jvectormap-1.2.2.css">
    <link rel="stylesheet" href="plugins/datepicker/datepicker3.css">
    <link rel="stylesheet" href="plugins/daterangepicker/daterangepicker.css">
    <link rel="stylesheet" href="plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.min.css">
    <link rel="stylesheet" href="plugins/datatables/dataTables.bootstrap.css">
    <link rel="stylesheet" href="plugins/treeTable/jquery.treetable.css">
    <link rel="stylesheet" href="plugins/treeTable/jquery.treetable.theme.default.css">
    <link rel="stylesheet" href="plugins/select2/select2.css">
    <link rel="stylesheet" href="plugins/colorpicker/bootstrap-colorpicker.min.css">
    <link rel="stylesheet" href="plugins/bootstrap-markdown/css/bootstrap-markdown.min.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/AdminLTE.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/skins/_all-skins.min.css">
    <link rel="stylesheet" href="css/style.css">
    <link rel="stylesheet" href="plugins/ionslider/ion.rangeSlider.css">
    <link rel="stylesheet" href="plugins/ionslider/ion.rangeSlider.skinNice.css">
    <link rel="stylesheet" href="plugins/bootstrap-slider/slider.css">
    <link rel="stylesheet" href="plugins/bootstrap-datetimepicker/bootstrap-datetimepicker.css">
</head>

<body class="hold-transition skin-blue sidebar-mini">

<div class="wrapper">

    <!-- 页面头部 -->
    <header class="main-header">


        <!-- Logo -->
        <a href="first.jsp" class="logo">
            <!-- mini logo for sidebar mini 50x50 pixels -->
            <span class="logo-mini"><b>学生</b></span>
            <!-- logo for regular state and mobile devices -->
            <span class="logo-lg"><b>易宿</b>后台管理</span>
        </a>


        <!-- Header Navbar: style can be found in header.less -->
        <nav class="navbar navbar-static-top">
            <!-- Sidebar toggle button-->
            <a href="#" class="sidebar-toggle" data-toggle="offcanvas" role="button">
                <span class="sr-only">Toggle navigation</span>
            </a>

            <div class="navbar-custom-menu">
                <ul class="nav navbar-nav">
                    <!-- Messages: style can be found in dropdown.less-->
                    <li class="dropdown messages-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-envelope-o"></i>
                            <span class="label label-success">4</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有4个邮件</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <!-- start message -->
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="./img/OIP.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                系统消息
                                                <small><i class="fa fa-clock-o"></i> 5 分钟前</small>
                                            </h4>
                                            <p>欢迎登录系统?</p>
                                        </a>
                                    </li>
                                    <!-- end message -->
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                团队消息
                                                <small><i class="fa fa-clock-o"></i> 2 小时前</small>
                                            </h4>
                                            <p>你有新的任务了</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Developers
                                                <small><i class="fa fa-clock-o"></i> Today</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Sales Department
                                                <small><i class="fa fa-clock-o"></i> Yesterday</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Reviewers
                                                <small><i class="fa fa-clock-o"></i> 2 days</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                </ul>
                            </li>
                            <li class="footer"><a href="#">See All Messages</a></li>
                        </ul>
                    </li>
                    <!-- Notifications: style can be found in dropdown.less -->
                    <li class="dropdown notifications-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-bell-o"></i>
                            <span class="label label-warning">10</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有10个新消息</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-users text-aqua"></i> 5 new members joined today
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-warning text-yellow"></i> Very long description here that may not
                                            fit into the page and may cause design problems
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-users text-red"></i> 5 new members joined
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-shopping-cart text-green"></i> 25 sales made
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-user text-red"></i> You changed your username
                                        </a>
                                    </li>
                                </ul>
                            </li>
                            <li class="footer"><a href="#">View all</a></li>
                        </ul>
                    </li>
                    <!-- Tasks: style can be found in dropdown.less -->
                    <li class="dropdown tasks-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-flag-o"></i>
                            <span class="label label-danger">9</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有9个新任务</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Design some buttons
                                                <small class="pull-right">20%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-aqua" style="width: 20%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">20% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Create a nice theme
                                                <small class="pull-right">40%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-green" style="width: 40%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">40% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Some task I need to do
                                                <small class="pull-right">60%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-red" style="width: 60%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">60% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Make beautiful transitions
                                                <small class="pull-right">80%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-yellow" style="width: 80%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">80% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                </ul>
                            </li>
                            <li class="footer">
                                <a href="#">View all tasks</a>
                            </li>
                        </ul>
                    </li>
                    <!-- User Account: style can be found in dropdown.less -->
                    <li class="dropdown user user-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <img src="./img/OIP.jpg" class="user-image" alt="User Image">
                            <span class="hidden-xs">欢迎${user}大驾光临</span>
                        </a>
                        <ul class="dropdown-menu">
                            <!-- User image -->
                            <li class="user-header">
                                <img src="./img/OIP.jpg" class="img-circle" alt="User Image">

                                <p>
                                    -${userType}-${user}
                                    <small>${accessTime}</small>
                                </p>
                            </li>
                            <!-- Menu Body
                    <li class="user-body">
                        <div class="row">
                            <div class="col-xs-4 text-center">
                                <a href="#">Followers</a>
                            </div>
                            <div class="col-xs-4 text-center">
                                <a href="#">Sales</a>
                            </div>
                            <div class="col-xs-4 text-center">
                                <a href="#">Friends</a>
                            </div>
                        </div>
                    </li>-->
                            <!-- Menu Footer-->
                            <li class="user-footer">
                                <div class="pull-left">
                                    <a href="ChangePassword.jsp" class="btn btn-default btn-flat">修改密码</a>
                                </div>
                                <div class="pull-right">
                                    <a href="index.jsp" class="btn btn-default btn-flat">注销</a>
                                </div>
                            </li>
                        </ul>
                    </li>

                </ul>
            </div>
        </nav>
    </header>
    <!-- 页面头部 /-->

    <!-- 导航侧栏 -->
    <aside class="main-sidebar">
        <!-- sidebar: style can be found in sidebar.less -->
        <section class="sidebar">
            <!-- Sidebar user panel -->
            <div class="user-panel">
                <div class="pull-left image">
                    <img src="./img/OIP.jpg" class="img-circle" alt="User Image">
                </div>
                <div class="pull-left info">
                    <p>欢迎${user}大驾光临</p>
                    <a href="#"><i class="fa fa-circle text-success"></i>  在线</a>
                </div>
            </div>
            <!-- search form -->
            <!--<form action="#" method="get" class="sidebar-form">
        <div class="input-group">
            <input type="text" name="q" class="form-control" placeholder="搜索...">
            <span class="input-group-btn">
            <button type="submit" name="search" id="search-btn" class="btn btn-flat"><i class="fa fa-search"></i>
            </button>
          </span>
        </div>
    </form>-->
            <!-- /.search form -->


            <!-- sidebar menu: : style can be found in sidebar.less -->
            <ul class="sidebar-menu">
                <li class="header">菜单</li>

                <li id="admin-index"><a href="first.jsp"><i class="fa fa-dashboard"></i> <span>首页</span></a></li>

                <!-- 菜单 -->



                <li class="treeview">
                    <a href="#">
                        <i class="glyphicon glyphicon-education"></i> <span>学生信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">
                        <li id="admin-list">
                            <a href="${pageContext.request.contextPath}/student.do">
                                <i class="fa fa-user"></i> 学生信息
                            </a>
                        </li>
                        <li id="admin-register">
                            <a href="add.jsp">
                                <i class="fa fa-user-plus"></i> 添加学生信息
                            </a>
                        </li>
                    </ul>

                <li class="treeview">
                    <a href="#">
                        <i class="glyphicon glyphicon-user"></i> <span>教师信息管理</span>
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                        </li>
                        <li id="addClass">
                            <a href="${pageContext.request.contextPath}/course.do?method=new">
                                <i class="fa fa-circle-o"></i> 添加课程信息
                            </a>
                        </li>
                        <li id="selectClass">
                            <a href="${pageContext.request.contextPath}/select.do?method=new">
                                <i class="fa fa-circle-o"></i> 查看自己的选课
                            </a>
                        </li>
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<!---->

要修改图片请找到这里进行更改哦~：

image-20201129143513059

<2>：搞个视频播放器，让老师看会小视频

样式展示：

在这里插入图片描述

全部代码：

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<!DOCTYPE html>
<html>

<head>
    <!-- 页面meta -->
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">




    <title>Hi~ 欢迎使用易宿管理系统哦~</title>
    <style type="text/css">
        /* *CoolPlay视频播放器
 * 2016年8月1日
 * 627314658@qq.com
 * */

        @font-face {
            font-family:'icomoon';
            font-weight:normal;
            font-style:normal;
        }
        [class^="icon-"],[class*=" icon-"] {
            /* use !important to prevent issues with browser extensions that change fonts */
            font-family:'icomoon' !important;
            speak:none;
            font-style:normal;
            font-weight:normal;
            font-variant:normal;
            text-transform:none;
            line-height:1;
            /* Better Font Rendering =========== */
            -webkit-font-smoothing:antialiased;
            -moz-osx-font-smoothing:grayscale;
        }
        /*一种旋转的策略*/
        @-moz-keyframes spin {
            0% {
                -moz-transform:rotate(0deg)
            }
            100% {
                -moz-transform:rotate(359deg)
            }
        }@-webkit-keyframes spin {
             0% {
                 -webkit-transform:rotate(0deg)
             }
             100% {
                 -webkit-transform:rotate(359deg)
             }
         }@-o-keyframes spin {
              0% {
                  -o-transform:rotate(0deg)
              }
              100% {
                  -o-transform:rotate(359deg)
              }
          }@-ms-keyframes spin {
               0% {
                   -ms-transform:rotate(0deg)
               }
               100% {
                   -ms-transform:rotate(359deg)
               }
           }@keyframes spin {
                0% {
                    transform:rotate(0deg)
                }
                100% {
                    transform:rotate(359deg)
                }
            }* {
                 margin:0;
                 padding:0;
             }
        body {
            font-size:16px;
            font-family:"微软雅黑";
        }
        /*播放器区域*/
        .cool-play {
            width:100%;
            height:100%;
            position:relative;
        }
        .cool-play:-webkit-full-screen {
            width:100%;
            height:100%;
        }
        .cool-play .cool-title {
            width:100%;
            height:40px;
            background-color:rgba(130,129,129,0.8);
            position:relative;
            line-height:40px;
            z-index:2;
            color:#ff6600;
            opacity:0;
            transition:opacity 0.8s;
            -webkit-transition:opacity 0.8s;
            -moz-transition:opacity 0.8s;
            -ms-transition:opacity 0.8s;
        }
        .cool-play .cool-title span {
            padding-left:20px;
        }
        .cool-play .cool-video .icon-c-loading {
            color:#FF6600;
            top:50%;
            left:50%;
            position:absolute;
            font-size:40px;
            margin-left:-20px;
            margin-top:-20px;
            -moz-animation:spin 2s infinite linear;
            -o-animation:spin 2s infinite linear;
            -webkit-animation:spin 2s infinite linear;
            animation:spin 2s infinite linear;
            display:none;
        }
        .cool-play .video {
            width:100%;
            height:100%;
            position:absolute;
            top:0;
            left:0;
            background-color:#000;
        }
        /*播放器按钮*/
        .cool-module {
            width:100%;
            background-color:rgba(130,129,129,0.8);
            bottom:0px;
            left:0px;
            position:absolute;
            opacity:1;
            /*方便调试，先定义为1，正常情况为0*/

            color:#fff;
            transition:opacity 0.8s;
            -webkit-transition:opacity 0.8s;
            -moz-transition:opacity 0.8s;
            -ms-transition:opacity 0.8s;
        }
        .cool-module a {
            cursor:pointer;
        }
        .cool-btn {
            height:38px;
        }
        .cool-play:hover .cool-title {
            opacity:1;
        }
        .cool-play:hover .cool-module {
            opacity:1;
        }
        .cool-btn .btn a {
            font-size:24px;
            line-height:38px;
            padding-left:10px;
            padding-right:10px;
            display:inline-block;
        }
        .cool-btn .cool-btn-left {
            display:inline-block;
            padding-left:10px;
            float:left;
        }
        .cool-btn .cool-btn-center {
            display:inline-block;
            line-height:38px;
            float:left;
            font-size:12px;
            color:#FFFFFF;
            margin-left:20px;
        }
        .cool-btn .cool-btn-right {
            display:inline-block;
            float:right;
            padding-right:10px;
        }
        .cool-btn a:hover {
            color:#ff5500;
        }
        /*进度条*/
        .cool-module .cool-progress {
            width:100%;
            height:4px;
            background-color:#fff;
            display:block;
            position:relative;
        }
        .cool-module .cool-progress .cool-played {
            background-color:#ff6600;
            height:100%;
            width:0%;
            position:absolute;
            /*transition:width .3s;
            -webkit-transition:width .3s;
            -moz-transition:width .3s;
            -ms-transition:width .3s;
            */
        }
        .cool-module .cool-progress .cool-drag {
            height:8px;
            width:8px;
            border-radius:100%;
            background-color:#fff;
            top:-2px;
            position:relative;
            margin-left:0%;
            position:absolute;
            display:none;
        }
        .voice {
            position:relative;
        }
        .voice:hover .c-voice {
            display:block;
        }
        .c-voice {
            position:absolute;
            width:40px;
            height:120px;
            background-color:rgba(130,129,129,0.8);
            bottom:38px;
            left:0;
            display:none;
        }
        .c-voice-triangle {
            position:absolute;
            bottom:-6px;
            left:12px;
            width:0;
            height:0;
            border-left:8px solid transparent;
            border-right:8px solid transparent;
            border-top:6px solid rgba(130,129,129,0.8);
        }
        .voice-bar {
            height:100px;
            width:2px;
            background-color:#000;
            position:absolute;
            left:50%;
            margin-left:-1px;
            bottom:10px;
        }
        .voice-bared {
            height:80px;
            width:2px;
            background-color:#f50;
            position:absolute;
            left:50%;
            margin-left:-1px;
            bottom:0;
        }
        .voice-dot {
            position:absolute;
            width:10px;
            height:10px;
            background-color:#fff;
            border-radius:100%;
            left:-4px;
            top:-5px;
        }
        .voice-mask {
            height:100px;
            width:20px;
            background-color:red;
            position:absolute;
            bottom:10px;
            left:50%;
            margin-left:-10px;
            opacity:0;
        }

    </style>
    <link rel="stylesheet" href="./plugins/bootstrap/css/bootstrap.css">
    <meta name="description" content="AdminLTE2定制版">
    <meta name="keywords" content="AdminLTE2定制版">







    <!-- Tell the browser to be responsive to screen width -->
    <meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
    <!-- Bootstrap 3.3.6 -->
    <!-- Font Awesome -->
    <!-- Ionicons -->
    <!-- iCheck -->
    <!-- Morris chart -->
    <!-- jvectormap -->
    <!-- Date Picker -->
    <!-- Daterange picker -->
    <!-- Bootstrap time Picker -->
    <!--<link rel="stylesheet" href="../../../plugins/timepicker/bootstrap-timepicker.min.css">-->
    <!-- bootstrap wysihtml5 - text editor -->
    <!--数据表格-->
    <!-- 表格树 -->
    <!-- select2 -->
    <!-- Bootstrap Color Picker -->
    <!-- bootstrap wysihtml5 - text editor -->
    <!--bootstrap-markdown-->
    <!-- Theme style -->
    <!-- AdminLTE Skins. Choose a skin from the css/skins
       folder instead of downloading all of them to reduce the load. -->
    <!-- Ion Slider -->
    <!-- ion slider Nice -->
    <!-- bootstrap slider -->
    <!-- bootstrap-datetimepicker -->

    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>

    <![endif]-->








    <!-- jQuery 2.2.3 -->
    <!-- jQuery UI 1.11.4 -->
    <!-- Resolve conflict in jQuery UI tooltip with Bootstrap tooltip -->
    <!-- Bootstrap 3.3.6 -->
    <!-- Morris.js charts -->
    <!-- Sparkline -->
    <!-- jvectormap -->
    <!-- jQuery Knob Chart -->
    <!-- daterangepicker -->
    <!-- datepicker -->
    <!-- Bootstrap WYSIHTML5 -->
    <!-- Slimscroll -->
    <!-- FastClick -->
    <!-- iCheck -->
    <!-- AdminLTE App -->
    <!-- 表格树 -->
    <!-- select2 -->
    <!-- bootstrap color picker -->
    <!-- bootstrap time picker -->
    <!--<script src="../../../plugins/timepicker/bootstrap-timepicker.min.js"></script>-->
    <!-- Bootstrap WYSIHTML5 -->
    <!--bootstrap-markdown-->
    <!-- CK Editor -->
    <!-- InputMask -->
    <!-- DataTables -->
    <!-- ChartJS 1.0.1 -->
    <!-- FLOT CHARTS -->
    <!-- FLOT RESIZE PLUGIN - allows the chart to redraw when the window is resized -->
    <!-- FLOT PIE PLUGIN - also used to draw donut charts -->
    <!-- FLOT CATEGORIES PLUGIN - Used to draw bar charts -->
    <!-- jQuery Knob -->
    <!-- Sparkline -->
    <!-- Morris.js charts -->
    <!-- Ion Slider -->
    <!-- Bootstrap slider -->
    <!-- bootstrap-datetimepicker -->
    <!-- 页面meta /-->

    <link rel="stylesheet" href="plugins/bootstrap/css/bootstrap.min.css">
    <link rel="stylesheet" href="plugins/font-awesome/css/font-awesome.min.css">
    <link rel="stylesheet" href="plugins/ionicons/css/ionicons.min.css">
    <link rel="stylesheet" href="plugins/iCheck/square/blue.css">
    <link rel="stylesheet" href="plugins/morris/morris.css">
    <link rel="stylesheet" href="plugins/jvectormap/jquery-jvectormap-1.2.2.css">
    <link rel="stylesheet" href="plugins/datepicker/datepicker3.css">
    <link rel="stylesheet" href="plugins/daterangepicker/daterangepicker.css">
    <link rel="stylesheet" href="plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.min.css">
    <link rel="stylesheet" href="plugins/datatables/dataTables.bootstrap.css">
    <link rel="stylesheet" href="plugins/treeTable/jquery.treetable.css">
    <link rel="stylesheet" href="plugins/treeTable/jquery.treetable.theme.default.css">
    <link rel="stylesheet" href="plugins/select2/select2.css">
    <link rel="stylesheet" href="plugins/colorpicker/bootstrap-colorpicker.min.css">
    <link rel="stylesheet" href="plugins/bootstrap-markdown/css/bootstrap-markdown.min.css">
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    <link rel="stylesheet" href="css/style.css">
    <link rel="stylesheet" href="plugins/ionslider/ion.rangeSlider.css">
    <link rel="stylesheet" href="plugins/ionslider/ion.rangeSlider.skinNice.css">
    <link rel="stylesheet" href="plugins/bootstrap-slider/slider.css">
    <link rel="stylesheet" href="plugins/bootstrap-datetimepicker/bootstrap-datetimepicker.css">
</head>

<body class="hold-transition skin-blue sidebar-mini">

<div class="wrapper">

    <!-- 页面头部 -->
    <header class="main-header">


        <!-- Logo -->
        <a href="first.jsp" class="logo">
            <!-- mini logo for sidebar mini 50x50 pixels -->
            <span class="logo-mini"><b>学生</b></span>
            <!-- logo for regular state and mobile devices -->
            <span class="logo-lg"><b>易宿</b>后台管理</span>
        </a>


        <!-- Header Navbar: style can be found in header.less -->
        <nav class="navbar navbar-static-top">
            <!-- Sidebar toggle button-->
            <a href="#" class="sidebar-toggle" data-toggle="offcanvas" role="button">
                <span class="sr-only">Toggle navigation</span>
            </a>

            <div class="navbar-custom-menu">
                <ul class="nav navbar-nav">
                    <!-- Messages: style can be found in dropdown.less-->
                    <li class="dropdown messages-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-envelope-o"></i>
                            <span class="label label-success">4</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有4个邮件</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <!-- start message -->
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="./img/OIP.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                系统消息
                                                <small><i class="fa fa-clock-o"></i> 5 分钟前</small>
                                            </h4>
                                            <p>欢迎登录系统?</p>
                                        </a>
                                    </li>
                                    <!-- end message -->
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                团队消息
                                                <small><i class="fa fa-clock-o"></i> 2 小时前</small>
                                            </h4>
                                            <p>你有新的任务了</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Developers
                                                <small><i class="fa fa-clock-o"></i> Today</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Sales Department
                                                <small><i class="fa fa-clock-o"></i> Yesterday</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Reviewers
                                                <small><i class="fa fa-clock-o"></i> 2 days</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                </ul>
                            </li>
                            <li class="footer"><a href="#">See All Messages</a></li>
                        </ul>
                    </li>
                    <!-- Notifications: style can be found in dropdown.less -->
                    <li class="dropdown notifications-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-bell-o"></i>
                            <span class="label label-warning">10</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有10个新消息</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-users text-aqua"></i> 5 new members joined today
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-warning text-yellow"></i> Very long description here that may not
                                            fit into the page and may cause design problems
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-users text-red"></i> 5 new members joined
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-shopping-cart text-green"></i> 25 sales made
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-user text-red"></i> You changed your username
                                        </a>
                                    </li>
                                </ul>
                            </li>
                            <li class="footer"><a href="#">View all</a></li>
                        </ul>
                    </li>
                    <!-- Tasks: style can be found in dropdown.less -->
                    <li class="dropdown tasks-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-flag-o"></i>
                            <span class="label label-danger">9</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有9个新任务</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Design some buttons
                                                <small class="pull-right">20%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-aqua" style="width: 20%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">20% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Create a nice theme
                                                <small class="pull-right">40%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-green" style="width: 40%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">40% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Some task I need to do
                                                <small class="pull-right">60%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-red" style="width: 60%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">60% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Make beautiful transitions
                                                <small class="pull-right">80%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-yellow" style="width: 80%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">80% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                </ul>
                            </li>
                            <li class="footer">
                                <a href="#">View all tasks</a>
                            </li>
                        </ul>
                    </li>
                    <!-- User Account: style can be found in dropdown.less -->
                    <li class="dropdown user user-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <img src="./img/OIP.jpg" class="user-image" alt="User Image">
                            <span class="hidden-xs">欢迎${user}大驾光临</span>
                        </a>
                        <ul class="dropdown-menu">
                            <!-- User image -->
                            <li class="user-header">
                                <img src="./img/OIP.jpg" class="img-circle" alt="User Image">

                                <p>
                                    -${userType}-${user}
                                    <small>${accessTime}</small>
                                </p>
                            </li>
                            <!-- Menu Body
                    <li class="user-body">
                        <div class="row">
                            <div class="col-xs-4 text-center">
                                <a href="#">Followers</a>
                            </div>
                            <div class="col-xs-4 text-center">
                                <a href="#">Sales</a>
                            </div>
                            <div class="col-xs-4 text-center">
                                <a href="#">Friends</a>
                            </div>
                        </div>
                    </li>-->
                            <!-- Menu Footer-->
                            <li class="user-footer">
                                <div class="pull-left">
                                    <a href="ChangePassword.jsp" class="btn btn-default btn-flat">修改密码</a>
                                </div>
                                <div class="pull-right">
                                    <a href="index.jsp" class="btn btn-default btn-flat">注销</a>
                                </div>
                            </li>
                        </ul>
                    </li>

                </ul>
            </div>
        </nav>
    </header>
    <!-- 页面头部 /-->

    <!-- 导航侧栏 -->
    <aside class="main-sidebar">
        <!-- sidebar: style can be found in sidebar.less -->
        <section class="sidebar">
            <!-- Sidebar user panel -->
            <div class="user-panel">
                <div class="pull-left image">
                    <img src="./img/OIP.jpg" class="img-circle" alt="User Image">
                </div>
                <div class="pull-left info">
                    <p>欢迎${user}大驾光临</p>
                    <a href="#"><i class="fa fa-circle text-success"></i>  在线</a>
                </div>
            </div>
            <!-- search form -->
            <!--<form action="#" method="get" class="sidebar-form">
        <div class="input-group">
            <input type="text" name="q" class="form-control" placeholder="搜索...">
            <span class="input-group-btn">
            <button type="submit" name="search" id="search-btn" class="btn btn-flat"><i class="fa fa-search"></i>
            </button>
          </span>
        </div>
    </form>-->
            <!-- /.search form -->


            <!-- sidebar menu: : style can be found in sidebar.less -->
            <ul class="sidebar-menu">
                <li class="header">菜单</li>

                <li id="admin-index"><a href="first.jsp"><i class="fa fa-dashboard"></i> <span>首页</span></a></li>

                <!-- 菜单 -->



                <li class="treeview">
                    <a href="#">
                        <i class="glyphicon glyphicon-education"></i> <span>学生信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">
                        <li id="admin-list">
                            <a href="${pageContext.request.contextPath}/student.do">
                                <i class="fa fa-user"></i> 学生信息
                            </a>
                        </li>
                        <li id="admin-register">
                            <a href="add.jsp">
                                <i class="fa fa-user-plus"></i> 添加学生信息
                            </a>
                        </li>
                    </ul>

                <li class="treeview">
                    <a href="#">
                        <i class="glyphicon glyphicon-user"></i> <span>教师信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">

                        <li id="charts-chartjs">
                            <a href="${pageContext.request.contextPath}/teacher.do">
                                <i class="fa fa-circle-o"></i> 教师信息
                            </a>
                        </li>
                        <li id="addTeacher">
                            <a href="addTeacher.jsp">
                                <i class="fa fa-circle-o"></i> 添加教师信息
                            </a>
                        </li>
                    </ul>
                <li class="treeview">
                    <a href="#">
                        <i class="fa fa-cogs"></i> <span>课程信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">

                        <li id="system-setting">
                            <a href="${pageContext.request.contextPath}/course.do">
                                <i class="fa fa-circle-o"></i> 课程信息
                            </a>
                        </li>
                        <li id="addClass">
                            <a href="${pageContext.request.contextPath}/course.do?method=new">
                                <i class="fa fa-circle-o"></i> 添加课程信息
                            </a>
                        </li>
                        <li id="selectClass">
                            <a href="${pageContext.request.contextPath}/select.do?method=new">
                                <i class="fa fa-circle-o"></i> 查看自己的选课
                            </a>
                        </li>
                    </ul>
                </li>
            </ul>
        </section>
        <!-- /.sidebar -->
    </aside>
    <!-- 导航侧栏 /-->

    <!-- 内容区域 -->
    <div class="content-wrapper">

        <!-- 内容头部 -->
        <section class="content-header">
            <div class="" style="width:600px;height: 400px;margin: 50px auto;">
                <div id="cool-play" class="cool-play">

                    <div class="cool-video">
                        <video id="video" class="video">
                            <source src="https://blz-videos.nosdn.127.net/1/OverWatch/AnimatedShots/Overwatch_AnimatedShot_Bastion_TheLastBastion.mp4" type="video/mp4">
                            您的浏览器不支持 HTML5 video 标签。
                        </video>
                        <span class="icon-c-loading"></span>
                    </div>

                    <div id="c-box" class="cool-module">
                        <div class="">
                            <a id="c-progress" class="cool-progress">
                                <span id="c-played" class="cool-played"></span>
                                <span type="range" id="c-drag" class="cool-drag"></span>
                            </a>
                        </div>
                        <div class="cool-btn">
                            <div class="cool-btn-left btn">

                                <a id="c-play" onclick="playPause()">》</a>

                            </div>
                            <div class="cool-btn-center">
                                <span id="c-currentTime">00:00</span>
                                <span>/</span>
                                <span id="c-totalTime">00:00</span>
                            </div>
                            <div class="cool-btn-right btn">
                                <a class="icon-c-refresh"></a>
                                <a class="voice">
                                    <span class="i-voice icon-c-voice"></span>
                                    <span class="c-voice">
									<span class="c-voice-triangle"></span>
                        <span class="voice-bar">
										<span class="voice-bared">
											<span class="voice-dot"></span>
                        </span>
                        </span>
                        <span class="voice-mask"></span>
                        </span>
                                </a>
                                <a id="cool-fullScreen" class="icon-c-enlarge"></a>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

        </section>
        <!-- 正文区域 /-->

    </div>
    <!-- 内容区域 /-->

    <!-- 底部导航 -->
    <footer class="main-footer">
        <div class="pull-right hidden-xs">
            <b>Version</b> 1.0.8
        </div>
        <strong>Copyright &copy; 2020 <a href="https://studentliuchang.gitee.io/">中德学院-物联网工程二班-刘畅</a>.</strong> All rights reserved.
    </footer>
    <!-- 底部导航 /-->

</div>


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<script src="plugins/jQueryUI/jquery-ui.min.js"></script>
<script>
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<script src="plugins/ionslider/ion.rangeSlider.min.js"></script>
<script src="plugins/bootstrap-slider/bootstrap-slider.js"></script>
<script src="plugins/bootstrap-datetimepicker/bootstrap-datetimepicker.js"></script>
<script src="plugins/bootstrap-datetimepicker/locales/bootstrap-datetimepicker.zh-CN.js"></script>
<script>
    $(document).ready(function() {
        // 选择框
        $(".select2").select2();

        // WYSIHTML5编辑器
        $(".textarea").wysihtml5({
            locale: 'zh-CN'
        });
    });


    // 设置激活菜单
    function setSidebarActive(tagUri) {
        var liObj = $("#" + tagUri);
        if (liObj.length > 0) {
            liObj.parent().parent().addClass("active");
            liObj.addClass("active");
        }
    }


    $(document).ready(function() {
        // 激活导航位置
        setSidebarActive("admin-index");
    });
</script>
<script type="text/javascript">
    var myVideo = document.getElementById("video"); //播放器
    var coolPlay = document.getElementById("cool-play");
    var cPlay = document.getElementById("c-play"); //播放按钮
    var cProgress = document.getElementById("c-progress");
    var cPlayed = document.getElementById("c-played"); //已经播放过的进度条
    var cDrag = document.getElementById("c-drag"); //进度条顶端的圆钮
    var cCurrentTime = document.getElementById("c-currentTime"); //当前时间span
    var cTotalTime = document.getElementById("c-totalTime"); //总时间
    var loading = document.getElementsByClassName("icon-c-loading"); //loading 旋转图标
    var refresh = document.getElementsByClassName("icon-c-refresh"); //重新加载按钮
    var voice = document.getElementsByClassName("i-voice"); //音量按钮
    var voice_mask = document.getElementsByClassName("voice-mask"); //音量总进度条
    var voice_bared = document.getElementsByClassName("voice-bared"); //现在的音量的进度条
    var voice_dot = document.getElementsByClassName("voice-dot");
    var voice_num = 0.8; //初始化当前的音量
    volume(voice_num); //把音量初始化到80
    function volume(n) {
        myVideo.volume = n;
        voice_bared[0].style.height = n * 100 + 'px';
    }

    function playPause() {
        if (myVideo.paused) {
            Play();
        } else {
            Pause();
        }
    };

    function Play() {
        cPlay.className = "icon-c-pause";
        myVideo.play();
    }

    function Pause() {
        cPlay.className = "icon-c-play";
        myVideo.pause();
    }
    refresh[0].onclick = function() {
        Load();
    }

    function Load() {
        Pause();
        myVideo.load();
        cPlayed.style.width = 0 + "%";
        cDrag.style.display = "none";
        cCurrentTime.innerHTML = "00:00";
        cTotalTime.innerHTML = "00:00";
    }
    //播放时间及进度条控制
    myVideo.ontimeupdate = function() {
        var currTime = this.currentTime, //当前播放时间
            duration = this.duration; // 视频总时长
        if (currTime == duration) {
            Pause();
        }
        //百分比
        var pre = currTime / duration * 100 + "%";
        //显示进度条
        cPlayed.style.width = pre;
        var progressWidth = cProgress.offsetWidth;
        var leftWidth = progressWidth * (currTime / duration);
        if (leftWidth > 8 && (progressWidth - leftWidth) > 4) {
            cDrag.style.display = "block";
        } else {
            cDrag.style.display = "none";
        }
        cDrag.style.left = progressWidth * (currTime / duration) - 4 + "px";
        //显示当前播放进度时间
        cCurrentTime.innerHTML = getFormatTime(currTime, duration);
        cTotalTime.innerHTML = getFormatTime(duration, duration);
    };
    //当浏览器可在不因缓冲而停顿的情况下进行播放时
    myVideo.oncanplaythrough = function() {
        loading[0].style.display = "none";
    }
    //当视频由于需要缓冲下一帧而停止
    myVideo.onwaiting = function() {
        loading[0].style.display = "block";
    }
    //当用户开始移动/跳跃到音频/视频中的新位置时
    myVideo.onseeking = function() {
        if (myVideo.readyState == 0 || myVideo.readyState == 1) {
            loading[0].style.display = "block";
        }
    }
    //拖拽进度条上的园钮实现跳跃播放
    /*cDrag.onmousedown = function(e){
      if(cPlay.className == 'icon-c-pause')
        myVideo.pause();
      loading[0].style.display="block";
      document.onmousemove = function(e){
        console.log("e.clientX:"+e.clientX);
        console.log("coolPlay.offsetLeft:"+coolPlay.offsetLeft);

        var leftV = e.clientX - coolPlay.offsetLeft;
        console.log("coolPlay.offsetLeft:"+coolPlay.offsetLeft);
        console.log("leftV:"+leftV);
        if(leftV <= 0){
          leftV = 0;
        }
        if(leftV >= coolPlay.offsetWidth){
          leftV = coolPlay.offsetWidth-10;
        }
        cDrag.style.left = leftV+"px";
    //  console.log(leftV);
      }
      document.onmouseup = function (){
        var scales = cDrag.offsetLeft/cProgress.offsetWidth;
        var du = myVideo.duration*scales;
        console.log("scales:"+scales);
        console.log("du:"+du);
        myVideo.currentTime = du;
        if(cPlay.className == 'icon-c-pause')
          myVideo.play();
        document.onmousemove = null;
        document.onmousedown = null;
      }
    }*/
    //在进度条上点击跳跃播放
    cProgress.onclick = function(e) {
        var event = e || window.event;
        console.log("当前点击的位置为：" + (event.offsetX / this.offsetWidth) * myVideo.duration);
        myVideo.currentTime = (event.offsetX / this.offsetWidth) * myVideo.duration;
    };
    //根据duration总长度返回 00 或 00:00 或 00:00:00 三种格式
    function getFormatTime(time, duration) {
        var time = time || 0;

        var h = parseInt(time / 3600),
            m = parseInt(time % 3600 / 60),
            s = parseInt(time % 60);
        s = s < 10 ? "0" + s : s;
        if (duration >= 60 && duration < 3600) {
            m = m < 10 ? "0" + m : m;
            return m + ":" + s;
        }
        if (duration >= 3600) {
            m = m < 10 ? "0" + m : m;
            h = h < 10 ? "0" + h : h;
            return h + ":" + m + ":" + s;
        }
        return s;
    }
    //音量的控制部分
    //点击声音按钮时，把视频静音
    voice[0].onclick = function() {
        if (myVideo.muted) {
            voice[0].className = "i-voice icon-c-voice";
            myVideo.muted = false;
            if (voice_num >= 0 && voice_num <= 1) {
                volume(voice_num);
            } else {
                volume(0.8);
            }
        } else {
            voice_num = myVideo.volume; //记录下来静音前的音量
            voice[0].className = 'i-voice icon-c-mute';
            myVideo.muted = true;
            volume(0);
        }
    }
    //当点击进度条上的一个位置时，变化音量
    voice_mask[0].onclick = function(e) {
        var event = e || window.event;
        if (event.offsetY >= 100) {
            voice[0].className = 'i-voice icon-c-mute';
            myVideo.muted = true;
            volume(0);
            return;
        }
        volume((100 - event.offsetY) / 100);
    };
    /*voice_mask[0].onmousedown = function(e){
      document.onmousemove = function(e){
        console.log("e.clientY:"+e.clientY);
        console.log("e.offsetY:"+e.offsetY);
        console.log(e);
        console.log(voice[0].offsetTop);
        console.log(document.getElementsByClassName("voice")[0]);
        volume((100-e.offsetY)/100);
        if(event.offsetY == 100){
          voice[0].className='i-voice icon-c-mute';
          myVideo.muted=true;
          volume(0);
        }
      }
      document.onmouseup = function (){
        document.onmousemove = null;
        document.onmousedown = null;
      }
    }*/
    //全屏的控制部分
    var fullscreen = document.getElementById('cool-fullScreen');
    var FullScreenTF = true;

    function launchFullscreen(element) {
        //此方法不能在异步中进行，否则火狐中不能全屏操作
        if (element.requestFullscreen) {
            element.requestFullscreen();
        } else if (element.mozRequestFullScreen) {
            element.mozRequestFullScreen();
        } else if (element.msRequestFullscreen) {
            element.msRequestFullscreen();
        } else if (element.oRequestFullscreen) {
            element.oRequestFullscreen();
        } else if (element.webkitRequestFullscreen) {
            element.webkitRequestFullScreen();
        } else {
            alert("您的浏览器版本太低，不支持全屏功能！");
        }
        FullScreenTF = false;
    };
    //退出全屏
    function exitFullscreen() {
        if (document.exitFullscreen) {
            document.exitFullscreen();
        } else if (document.msExitFullscreen) {
            document.msExitFullscreen();
        } else if (document.mozCancelFullScreen) {
            document.mozCancelFullScreen();
        } else if (document.oRequestFullscreen) {
            document.oCancelFullScreen();
        } else if (document.webkitExitFullscreen) {
            document.webkitExitFullscreen();
        } else {
            alert("您的浏览器版本太低，不支持全屏功能！");
        }
        FullScreenTF = true;
    };
    fullscreen.onclick = function() {
        if (FullScreenTF) {
            launchFullscreen(coolPlay);
            fullscreen.className = "icon-c-shrink";
        } else {
            exitFullscreen();
            fullscreen.className = "icon-c-enlarge";
        }
    };
</script>

</body>

</html>
<!---->

<3>：制作一个时钟

样式展示：

GIF 2020-11-29 15-06-34

界面代码：

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<!DOCTYPE html>
<html>

<head>
    <!-- 页面meta -->
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">




    <title>Hi~ 欢迎使用易宿管理系统哦~</title>
    <style type="text/css">
        body {
            perspective:1000px;
        }
        .clock {
            height:300px;
            width:300px;
            border:1px solid #5dac81;
            border-radius:50% 50%;
            margin:100px auto;
            background:#005CAF;
            box-shadow:0 0 10px 2px #FC9F4D;
            position:relative;
            transform-style:preserve-3d;
            animation:hd 3s ease 0.1s 1 both;
            box-shadow:100px 100px 30px  10px rgba(0,0,0,0.2);
            transform:scale(0);
            opacity:0;
        }
        @keyframes hd {
            20% {
                transform:scale(1);
                opacity:0.2;
            }
            40% {
                transform:scale(0.6);
                opacity:0.4;
            }
            60% {
                transform:scale(1);
                opacity:0.6;
            }
            80% {
                transform:scale(0.8);
                opacity:0.8;
            }
            100% {
                transform:scale(1);
                background-image:linear-gradient(to right,rgba(255,0,0,0),rgba(255,0,0,1));
                opacity:1;
            }
        }.big {
             height:300px;
             width:300px;
             border-radius:50%;
             position:absolute;
             top:0;
             left:0;
         }
        .small {
            height:10px;
            width:1px;
            background:#FBE251;
            position:absolute;
            top:0;
            left:50%;
        }
        .small span {
            color:#fff;
            position:relative;
            top:10px;
            left:-7px;
            font-size:18px;
        }
        .cm {
            height:5px;
            width:1px;
            background:#FBE251;
            position:absolute;
            top:0;
            left:50%;
        }
        .dian {
            width:16px;
            height:16px;
            border-radius:50%;
            background:#fff;
            position:absolute;
            top:0;
            left:0;
            bottom:0;
            right:0;
            margin:auto;
            z-index:10;
        }
        .s {
            width:2px;
            height:100px;
            position:absolute;
            top:51px;
            left:149px;
            background:#C73E3A;
            transform-origin:bottom left;
        }
        .m {
            width:4px;
            height:80px;
            position:absolute;
            background:#F75C2F;
            top:71px;
            left:148px;
            transform-origin:bottom left;
            z-index:1;
        }
        .h {
            width:6px;
            height:60px;
            position:absolute;
            background:#FAD689;
            top:91px;
            left:147px;
            transform-origin:bottom left;
            margin:0 auto;
            z-index:0;
        }

    </style>
    <link rel="stylesheet" href="./plugins/bootstrap/css/bootstrap.css">
    <meta name="description" content="AdminLTE2定制版">
    <meta name="keywords" content="AdminLTE2定制版">







    <!-- Tell the browser to be responsive to screen width -->
    <meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
    <!-- Bootstrap 3.3.6 -->
    <!-- Font Awesome -->
    <!-- Ionicons -->
    <!-- iCheck -->
    <!-- Morris chart -->
    <!-- jvectormap -->
    <!-- Date Picker -->
    <!-- Daterange picker -->
    <!-- Bootstrap time Picker -->
    <!--<link rel="stylesheet" href="../../../plugins/timepicker/bootstrap-timepicker.min.css">-->
    <!-- bootstrap wysihtml5 - text editor -->
    <!--数据表格-->
    <!-- 表格树 -->
    <!-- select2 -->
    <!-- Bootstrap Color Picker -->
    <!-- bootstrap wysihtml5 - text editor -->
    <!--bootstrap-markdown-->
    <!-- Theme style -->
    <!-- AdminLTE Skins. Choose a skin from the css/skins
       folder instead of downloading all of them to reduce the load. -->
    <!-- Ion Slider -->
    <!-- ion slider Nice -->
    <!-- bootstrap slider -->
    <!-- bootstrap-datetimepicker -->

    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>

    <![endif]-->








    <!-- jQuery 2.2.3 -->
    <!-- jQuery UI 1.11.4 -->
    <!-- Resolve conflict in jQuery UI tooltip with Bootstrap tooltip -->
    <!-- Bootstrap 3.3.6 -->
    <!-- Morris.js charts -->
    <!-- Sparkline -->
    <!-- jvectormap -->
    <!-- jQuery Knob Chart -->
    <!-- daterangepicker -->
    <!-- datepicker -->
    <!-- Bootstrap WYSIHTML5 -->
    <!-- Slimscroll -->
    <!-- FastClick -->
    <!-- iCheck -->
    <!-- AdminLTE App -->
    <!-- 表格树 -->
    <!-- select2 -->
    <!-- bootstrap color picker -->
    <!-- bootstrap time picker -->
    <!--<script src="../../../plugins/timepicker/bootstrap-timepicker.min.js"></script>-->
    <!-- Bootstrap WYSIHTML5 -->
    <!--bootstrap-markdown-->
    <!-- CK Editor -->
    <!-- InputMask -->
    <!-- DataTables -->
    <!-- ChartJS 1.0.1 -->
    <!-- FLOT CHARTS -->
    <!-- FLOT RESIZE PLUGIN - allows the chart to redraw when the window is resized -->
    <!-- FLOT PIE PLUGIN - also used to draw donut charts -->
    <!-- FLOT CATEGORIES PLUGIN - Used to draw bar charts -->
    <!-- jQuery Knob -->
    <!-- Sparkline -->
    <!-- Morris.js charts -->
    <!-- Ion Slider -->
    <!-- Bootstrap slider -->
    <!-- bootstrap-datetimepicker -->
    <!-- 页面meta /-->

    <link rel="stylesheet" href="plugins/bootstrap/css/bootstrap.min.css">
    <link rel="stylesheet" href="plugins/font-awesome/css/font-awesome.min.css">
    <link rel="stylesheet" href="plugins/ionicons/css/ionicons.min.css">
    <link rel="stylesheet" href="plugins/iCheck/square/blue.css">
    <link rel="stylesheet" href="plugins/morris/morris.css">
    <link rel="stylesheet" href="plugins/jvectormap/jquery-jvectormap-1.2.2.css">
    <link rel="stylesheet" href="plugins/datepicker/datepicker3.css">
    <link rel="stylesheet" href="plugins/daterangepicker/daterangepicker.css">
    <link rel="stylesheet" href="plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.min.css">
    <link rel="stylesheet" href="plugins/datatables/dataTables.bootstrap.css">
    <link rel="stylesheet" href="plugins/treeTable/jquery.treetable.css">
    <link rel="stylesheet" href="plugins/treeTable/jquery.treetable.theme.default.css">
    <link rel="stylesheet" href="plugins/select2/select2.css">
    <link rel="stylesheet" href="plugins/colorpicker/bootstrap-colorpicker.min.css">
    <link rel="stylesheet" href="plugins/bootstrap-markdown/css/bootstrap-markdown.min.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/AdminLTE.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/skins/_all-skins.min.css">
    <link rel="stylesheet" href="css/style.css">
    <link rel="stylesheet" href="plugins/ionslider/ion.rangeSlider.css">
    <link rel="stylesheet" href="plugins/ionslider/ion.rangeSlider.skinNice.css">
    <link rel="stylesheet" href="plugins/bootstrap-slider/slider.css">
    <link rel="stylesheet" href="plugins/bootstrap-datetimepicker/bootstrap-datetimepicker.css">
</head>

<body class="hold-transition skin-blue sidebar-mini">

<div class="wrapper">

    <!-- 页面头部 -->
    <header class="main-header">


        <!-- Logo -->
        <a href="first.jsp" class="logo">
            <!-- mini logo for sidebar mini 50x50 pixels -->
            <span class="logo-mini"><b>学生</b></span>
            <!-- logo for regular state and mobile devices -->
            <span class="logo-lg"><b>易宿</b>后台管理</span>
        </a>


        <!-- Header Navbar: style can be found in header.less -->
        <nav class="navbar navbar-static-top">
            <!-- Sidebar toggle button-->
            <a href="#" class="sidebar-toggle" data-toggle="offcanvas" role="button">
                <span class="sr-only">Toggle navigation</span>
            </a>

            <div class="navbar-custom-menu">
                <ul class="nav navbar-nav">
                    <!-- Messages: style can be found in dropdown.less-->
                    <li class="dropdown messages-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-envelope-o"></i>
                            <span class="label label-success">4</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有4个邮件</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <!-- start message -->
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="./img/OIP.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                系统消息
                                                <small><i class="fa fa-clock-o"></i> 5 分钟前</small>
                                            </h4>
                                            <p>欢迎登录系统?</p>
                                        </a>
                                    </li>
                                    <!-- end message -->
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                团队消息
                                                <small><i class="fa fa-clock-o"></i> 2 小时前</small>
                                            </h4>
                                            <p>你有新的任务了</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Developers
                                                <small><i class="fa fa-clock-o"></i> Today</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Sales Department
                                                <small><i class="fa fa-clock-o"></i> Yesterday</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Reviewers
                                                <small><i class="fa fa-clock-o"></i> 2 days</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                </ul>
                            </li>
                            <li class="footer"><a href="#">See All Messages</a></li>
                        </ul>
                    </li>
                    <!-- Notifications: style can be found in dropdown.less -->
                    <li class="dropdown notifications-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-bell-o"></i>
                            <span class="label label-warning">10</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有10个新消息</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-users text-aqua"></i> 5 new members joined today
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-warning text-yellow"></i> Very long description here that may not
                                            fit into the page and may cause design problems
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-users text-red"></i> 5 new members joined
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-shopping-cart text-green"></i> 25 sales made
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-user text-red"></i> You changed your username
                                        </a>
                                    </li>
                                </ul>
                            </li>
                            <li class="footer"><a href="#">View all</a></li>
                        </ul>
                    </li>
                    <!-- Tasks: style can be found in dropdown.less -->
                    <li class="dropdown tasks-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-flag-o"></i>
                            <span class="label label-danger">9</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有9个新任务</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Design some buttons
                                                <small class="pull-right">20%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-aqua" style="width: 20%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">20% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Create a nice theme
                                                <small class="pull-right">40%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-green" style="width: 40%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">40% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Some task I need to do
                                                <small class="pull-right">60%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-red" style="width: 60%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">60% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Make beautiful transitions
                                                <small class="pull-right">80%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-yellow" style="width: 80%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">80% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                </ul>
                            </li>
                            <li class="footer">
                                <a href="#">View all tasks</a>
                            </li>
                        </ul>
                    </li>
                    <!-- User Account: style can be found in dropdown.less -->
                    <li class="dropdown user user-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <img src="./img/OIP.jpg" class="user-image" alt="User Image">
                            <span class="hidden-xs">欢迎${user}大驾光临</span>
                        </a>
                        <ul class="dropdown-menu">
                            <!-- User image -->
                            <li class="user-header">
                                <img src="./img/OIP.jpg" class="img-circle" alt="User Image">

                                <p>
                                    -${userType}-${user}
                                    <small>${accessTime}</small>
                                </p>
                            </li>
                            <!-- Menu Body
                    <li class="user-body">
                        <div class="row">
                            <div class="col-xs-4 text-center">
                                <a href="#">Followers</a>
                            </div>
                            <div class="col-xs-4 text-center">
                                <a href="#">Sales</a>
                            </div>
                            <div class="col-xs-4 text-center">
                                <a href="#">Friends</a>
                            </div>
                        </div>
                    </li>-->
                            <!-- Menu Footer-->
                            <li class="user-footer">
                                <div class="pull-left">
                                    <a href="ChangePassword.jsp" class="btn btn-default btn-flat">修改密码</a>
                                </div>
                                <div class="pull-right">
                                    <a href="index.jsp" class="btn btn-default btn-flat">注销</a>
                                </div>
                            </li>
                        </ul>
                    </li>

                </ul>
            </div>
        </nav>
    </header>
    <!-- 页面头部 /-->

    <!-- 导航侧栏 -->
    <aside class="main-sidebar">
        <!-- sidebar: style can be found in sidebar.less -->
        <section class="sidebar">
            <!-- Sidebar user panel -->
            <div class="user-panel">
                <div class="pull-left image">
                    <img src="./img/OIP.jpg" class="img-circle" alt="User Image">
                </div>
                <div class="pull-left info">
                    <p>欢迎${user}大驾光临</p>
                    <a href="#"><i class="fa fa-circle text-success"></i>  在线</a>
                </div>
            </div>
            <!-- search form -->
            <!--<form action="#" method="get" class="sidebar-form">
        <div class="input-group">
            <input type="text" name="q" class="form-control" placeholder="搜索...">
            <span class="input-group-btn">
            <button type="submit" name="search" id="search-btn" class="btn btn-flat"><i class="fa fa-search"></i>
            </button>
          </span>
        </div>
    </form>-->
            <!-- /.search form -->


            <!-- sidebar menu: : style can be found in sidebar.less -->
            <ul class="sidebar-menu">
                <li class="header">菜单</li>

                <li id="admin-index"><a href="first.jsp"><i class="fa fa-dashboard"></i> <span>首页</span></a></li>

                <!-- 菜单 -->



                <li class="treeview">
                    <a href="#">
                        <i class="glyphicon glyphicon-education"></i> <span>学生信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">
                        <li id="admin-list">
                            <a href="${pageContext.request.contextPath}/student.do">
                                <i class="fa fa-user"></i> 学生信息
                            </a>
                        </li>
                        <li id="admin-register">
                            <a href="add.jsp">
                                <i class="fa fa-user-plus"></i> 添加学生信息
                            </a>
                        </li>
                    </ul>

                <li class="treeview">
                    <a href="#">
                        <i class="glyphicon glyphicon-user"></i> <span>教师信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">

                        <li id="charts-chartjs">
                            <a href="${pageContext.request.contextPath}/teacher.do">
                                <i class="fa fa-circle-o"></i> 教师信息
                            </a>
                        </li>
                        <li id="addTeacher">
                            <a href="addTeacher.jsp">
                                <i class="fa fa-circle-o"></i> 添加教师信息
                            </a>
                        </li>
                    </ul>
                <li class="treeview">
                    <a href="#">
                        <i class="fa fa-cogs"></i> <span>课程信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">

                        <li id="system-setting">
                            <a href="${pageContext.request.contextPath}/course.do">
                                <i class="fa fa-circle-o"></i> 课程信息
                            </a>
                        </li>
                        <li id="addClass">
                            <a href="${pageContext.request.contextPath}/course.do?method=new">
                                <i class="fa fa-circle-o"></i> 添加课程信息
                            </a>
                        </li>
                        <li id="selectClass">
                            <a href="${pageContext.request.contextPath}/select.do?method=new">
                                <i class="fa fa-circle-o"></i> 查看自己的选课
                            </a>
                        </li>
                    </ul>
                </li>
            </ul>
        </section>
        <!-- /.sidebar -->
    </aside>
    <!-- 导航侧栏 /-->

    <!-- 内容区域 -->
    <div class="content-wrapper">

        <!-- 内容头部 -->
        <section class="content-header">
            <div class="clock">
                <div class="dian"></div>
                <div class="s"></div>
                <div class="m"></div>
                <div class="h"></div>
            </div>

        </section>
        <!-- 正文区域 /-->

    </div>
    <!-- 内容区域 /-->

    <!-- 底部导航 -->
    <footer class="main-footer">
        <div class="pull-right hidden-xs">
            <b>Version</b> 1.0.8
        </div>
        <strong>Copyright &copy; 2020 <a href="https://studentliuchang.gitee.io/">中德学院-物联网工程二班-刘畅</a>.</strong> All rights reserved.
    </footer>
    <!-- 底部导航 /-->

</div>


<script src="plugins/jQuery/jquery-2.2.3.min.js"></script>
<script src="plugins/jQueryUI/jquery-ui.min.js"></script>
<script>
    $.widget.bridge('uibutton', $.ui.button);
</script>
<script src="plugins/bootstrap/js/bootstrap.min.js"></script>
<script src="plugins/raphael/raphael-min.js"></script>
<script src="plugins/morris/morris.min.js"></script>
<script src="plugins/sparkline/jquery.sparkline.min.js"></script>
<script src="plugins/jvectormap/jquery-jvectormap-1.2.2.min.js"></script>
<script src="plugins/jvectormap/jquery-jvectormap-world-mill-en.js"></script>
<script src="plugins/knob/jquery.knob.js"></script>
<script src="plugins/daterangepicker/moment.min.js"></script>
<script src="plugins/daterangepicker/daterangepicker.js"></script>
<script src="plugins/daterangepicker/daterangepicker.zh-CN.js"></script>
<script src="plugins/datepicker/bootstrap-datepicker.js"></script>
<script src="plugins/datepicker/locales/bootstrap-datepicker.zh-CN.js"></script>
<script src="plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.all.min.js"></script>
<script src="plugins/slimScroll/jquery.slimscroll.min.js"></script>
<script src="plugins/fastclick/fastclick.js"></script>
<script src="plugins/iCheck/icheck.min.js"></script>
<script src="plugins/adminLTE/js/app.min.js"></script>
<script src="plugins/treeTable/jquery.treetable.js"></script>
<script src="plugins/select2/select2.full.min.js"></script>
<script src="plugins/colorpicker/bootstrap-colorpicker.min.js"></script>
<script src="plugins/bootstrap-wysihtml5/bootstrap-wysihtml5.zh-CN.js"></script>
<script src="plugins/bootstrap-markdown/js/bootstrap-markdown.js"></script>
<script src="plugins/bootstrap-markdown/locale/bootstrap-markdown.zh.js"></script>
<script src="plugins/bootstrap-markdown/js/markdown.js"></script>
<script src="plugins/bootstrap-markdown/js/to-markdown.js"></script>
<script src="plugins/ckeditor/ckeditor.js"></script>
<script src="plugins/input-mask/jquery.inputmask.js"></script>
<script src="plugins/input-mask/jquery.inputmask.date.extensions.js"></script>
<script src="plugins/input-mask/jquery.inputmask.extensions.js"></script>
<script src="plugins/datatables/jquery.dataTables.min.js"></script>
<script src="plugins/datatables/dataTables.bootstrap.min.js"></script>
<script src="plugins/chartjs/Chart.min.js"></script>
<script src="plugins/flot/jquery.flot.min.js"></script>
<script src="plugins/flot/jquery.flot.resize.min.js"></script>
<script src="plugins/flot/jquery.flot.pie.min.js"></script>
<script src="plugins/flot/jquery.flot.categories.min.js"></script>
<script src="plugins/ionslider/ion.rangeSlider.min.js"></script>
<script src="plugins/bootstrap-slider/bootstrap-slider.js"></script>
<script src="plugins/bootstrap-datetimepicker/bootstrap-datetimepicker.js"></script>
<script src="plugins/bootstrap-datetimepicker/locales/bootstrap-datetimepicker.zh-CN.js"></script>
<script>
    $(document).ready(function() {
        // 选择框
        $(".select2").select2();

        // WYSIHTML5编辑器
        $(".textarea").wysihtml5({
            locale: 'zh-CN'
        });
    });


    // 设置激活菜单
    function setSidebarActive(tagUri) {
        var liObj = $("#" + tagUri);
        if (liObj.length > 0) {
            liObj.parent().parent().addClass("active");
            liObj.addClass("active");
        }
    }


    $(document).ready(function() {
        // 激活导航位置
        setSidebarActive("admin-index");
    });
</script>
<script type="text/javascript">
    class Clock {
        constructor() {
            let d = new Date();
            this.hcr = (d.getHours() + d.getMinutes() / 60) * 30;
            this.mcr = d.getMinutes() * 6;
            this.scr = d.getSeconds() * 6;
            this.h = d.getHours();
            this.m = d.getMinutes();
            this.s = d.getSeconds();
        }
        init() {
            this.creatBig();
            this.creatCm();
            this.styles();
            this.setTime();
        }
        creatBig() {
            for (let i = 1; i < 13; i++) {
                let td = i * 30;
                var ht =
                    `
				  <div class="big" style="transform: rotate(${td}deg)">
					  <div class="small">
					    <span>${i}</span>
					  </div>
				  </div>
				`
                $('.clock').append(ht);
            }
        }
        creatCm() {
            for (let j = 0; j < 60; j++) {
                let td = j * 6;
                var th =
                    `
					  <div class="big" style="transform: rotate(${td}deg)">
						  <div class="cm"></div>
					  </div>
					`
                $('.clock').append(th);
            }
        }
        styles() {
            $('.h').css({
                transform: `rotate(${this.hcr}deg)`
            });
            $('.m').css({
                transform: `rotate(${this.mcr}deg)`
            });
            $('.s').css({
                transform: `rotate(${this.scr}deg)`
            });
        }
        setTime() {
            setInterval(() => {
                this.s++;
                //秒针旋转角度
                let sd = this.s * 6;
                if (this.s >= 60) {
                    this.s = 0;
                    this.m++;
                    if (this.m >= 60) {
                        this.m = 0;
                    }
                    // //分针旋转角度
                    let md = this.m * 6;
                    $('.m').css({
                        transform: `rotate(${md}deg)`
                    });
                    this.hcr += 0.5;
                    $('.h').css({
                        transform: `rotate(${this.hcr}deg)`
                    })
                }
                $('.s').css({
                    transform: `rotate(${sd}deg)`
                });
            }, 1000);
        }
    }
    let cl = new Clock()
    cl.init();
</script>

</body>

</html>
<!---->

<4>：实现标题闪动

样式展示：

GIF 2020-11-29 15-22-02

代码实现：

找到界面下面的东西

image-20201129152431758

在这几个标签下复制下面代码

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<script type="text/javascript">
bind();
// 使用message对象封装消息  
var message = {
    time: 0,
    title: document.title,
    timer: null,
    // 显示新消息提示  
    show: function() {
        var title = message.title.replace("【　　　】", "").replace("【新消息】", "");
        // 定时器，设置消息切换频率闪烁效果就此产生  
        message.timer = setTimeout(function() {
            message.time++;
            message.show();
            if (message.time % 2 == 0) {
                document.title = "【新消息】" + title
            } else {
                document.title = "【　　　】" + title
            };
        }, 600);
        return [message.timer, message.title];
    },
    // 取消新消息提示  
    clear: function() {
        clearTimeout(message.timer);
        document.title = message.title;
    }
};
message.show();
// 页面加载时绑定点击事件，单击取消闪烁提示  
function bind() {
    document.onclick = function() {
        message.clear();
    };
}
</script>

<5>：炫酷的404、500界面

样式一展示：

在这里插入图片描述

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<!DOCTYPE html>
<html>

<head>
    <!-- 页面meta -->
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">




    <title>Hi~ 你访问的网页有错误哦~</title>
    <style type="text/css">

        /***********************************
                    /* 1. BODY */
        /***********************************/

        * {
            margin: 0;
            padding: 0;
            -webkit-text-size-adjust: none;
        }

        html, body {
            height: 100%;
            overflow: hidden;
        }

        body {
            padding: 0;
            margin: 0;
            background: #181828;
            font-size: 14px;
            line-height: 1;
        }

        label {
            cursor: pointer;
        }

        a {
            margin: 0;
            padding: 0;
            vertical-align: baseline;
            background: transparent;
            text-decoration: none;
            color: #000;
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            font-size: 100%;
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        html, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre,
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        small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li,
        fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, input {
            border: 0;
            outline: 0;
            font-size: 100%;
            vertical-align: baseline;
            background: transparent;
        }

        .top-header:before {
            content: '';
            display: block;
            width: 100%;
            height: 4px;
            background-repeat: repeat-x;
            background-size: contain;
            position: absolute;
            top: 0;
            left: 0;
            opacity:0.5;
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            height: 1px;
            background: transparent;
            box-shadow: 571px 173px #00BCD4, 1732px 143px #00BCD4, 1745px 454px #FF5722, 234px 784px #00BCD4, 1793px 1123px #FF9800, 1076px 504px #03A9F4, 633px 601px #FF5722, 350px 630px #FFEB3B, 1164px 782px #00BCD4, 76px 690px #3F51B5, 1825px 701px #CDDC39, 1646px 578px #FFEB3B, 544px 293px #2196F3, 445px 1061px #673AB7, 928px 47px #00BCD4, 168px 1410px #8BC34A, 777px 782px #9C27B0, 1235px 1941px #9C27B0, 104px 1690px #8BC34A, 1167px 1338px #E91E63, 345px 1652px #009688, 1682px 1196px #F44336, 1995px 494px #8BC34A, 428px 798px #FF5722, 340px 1623px #F44336, 605px 349px #9C27B0, 1339px 1344px #673AB7, 1102px 1745px #3F51B5, 1592px 1676px #2196F3, 419px 1024px #FF9800, 630px 1033px #4CAF50, 1995px 1644px #00BCD4, 1092px 712px #9C27B0, 1355px 606px #F44336, 622px 1881px #CDDC39, 1481px 621px #9E9E9E, 19px 1348px #8BC34A, 864px 1780px #E91E63, 442px 1136px #2196F3, 67px 712px #FF5722, 89px 1406px #F44336, 275px 321px #009688, 592px 630px #E91E63, 1012px 1690px #9C27B0, 1749px 23px #673AB7, 94px 1542px #FFEB3B, 1201px 1657px #3F51B5, 1505px 692px #2196F3, 1799px 601px #03A9F4, 656px 811px #00BCD4, 701px 597px #00BCD4, 1202px 46px #FF5722, 890px 569px #FF5722, 1613px 813px #2196F3, 223px 252px #FF9800, 983px 1093px #F44336, 726px 1029px #FFC107, 1764px 778px #CDDC39, 622px 1643px #F44336, 174px 1559px #673AB7, 212px 517px #00BCD4, 340px 505px #FFF, 1700px 39px #FFF, 1768px 516px #F44336, 849px 391px #FF9800, 228px 1824px #FFF, 1119px 1680px #FFC107, 812px 1480px #3F51B5, 1438px 1585px #CDDC39, 137px 1397px #FFF, 1080px 456px #673AB7, 1208px 1437px #03A9F4, 857px 281px #F44336, 1254px 1306px #CDDC39, 987px 990px #4CAF50, 1655px 911px #00BCD4, 1102px 1216px #FF5722, 1807px 1044px #FFF, 660px 435px #03A9F4, 299px 678px #4CAF50, 1193px 115px #FF9800, 918px 290px #CDDC39, 1447px 1422px #FFEB3B, 91px 1273px #9C27B0, 108px 223px #FFEB3B, 146px 754px #00BCD4, 461px 1446px #FF5722, 1004px 391px #673AB7, 1529px 516px #F44336, 1206px 845px #CDDC39, 347px 583px #009688, 1102px 1332px #F44336, 709px 1756px #00BCD4, 1972px 248px #FFF, 1669px 1344px #FF5722, 1132px 406px #F44336, 320px 1076px #CDDC39, 126px 943px #FFEB3B, 263px 604px #FF5722, 1546px 692px #F44336;
            animation: animStar 80s linear infinite;
        }

        @keyframes animStar
        {
            0% {
                transform: translateY(0px);
            }
            100% {
                transform: translateY(-2000px);
            }
        }



        button {
            border: none;
            padding: 0;
            font-size: 0;
            line-height: 0;
            background: none;
            cursor: pointer;
        }

        :focus {
            outline: 0;
        }

        .clearfix:before, .clearfix:after {
            content: "\0020";
            display: block;
            height: 0;
            visibility: hidden;
        }

        .clearfix:after {
            clear: both;
        }

        .clearfix {
            zoom: 1;
        }

        /* 1. END BODY */
        /***********************************/

        /***********************************
                    /* 2. CONTENT */
        /***********************************/
        /* 2.1. Section error */
        .error {
            min-height: 100vh;
            position: relative;
            padding: 240px 0;
            box-sizing: border-box;
            width: 100%;
            height: 100%;
            text-align: center;
            margin-top: 70px;
        }

        .error__overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
        }

        .error__content {
            position: absolute;
            top: 50%;
            left: 50%;
            width: 100%;
            -webkit-transform: translate(-50%, -50%);
            transform: translate(-50%, -50%);
        }

        .error__message {
            text-align: center;
            color: #181828;
        }

        .message__title {
            font-family: 'Montserrat', sans-serif;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 5px;
            font-size: 5.6rem;
            padding-bottom: 40px;
            max-width: 960px;
            margin: 0 auto;
        }

        .message__text {
            font-family: 'Montserrat', sans-serif;
            line-height: 42px;
            font-size: 18px;
            padding: 0 60px;
            max-width: 680px;
            margin: auto;
        }

        .error__nav {
            max-width: 600px;
            margin: 40px auto 0;
            text-align: center;
        }

        .e-nav__form {
            position: relative;
            height: 45px;
            overflow: hidden;
            width: 170px;
            display: inline-block;
            vertical-align: top;
            border: 1px solid #212121;
            padding-left: 10px;
            padding-right: 46px;
        }

        .e-nav__icon {
            position: absolute;
            right: 15px;
            top: 50%;
            -webkit-transform: translateY(-50%);
            transform: translateY(-50%);
            color: #212121;
            -webkit-transition: color .25s ease;
            transition: color .25s ease;
        }

        .e-nav__link {
            height: 45px;
            line-height: 45px;
            width: 170px;
            display: inline-block;
            vertical-align: top;
            margin: 0 15px;
            border: 1px solid #181828;
            color: #181828;
            text-decoration: none;
            font-family: 'Montserrat', sans-serif;
            text-transform: uppercase;
            font-size: 11px;
            letter-spacing: .1rem;
            position: relative;
            overflow: hidden;
        }

        .e-nav__link:before {
            content: '';
            height: 200px;
            background: #212121;
            position: absolute;
            top: 70px;
            right: 70px;
            width: 260px;
            -webkit-transition: all .3s;
            transition: all .3s;
            -webkit-transform: rotate(50deg);
            transform: rotate(50deg);
        }

        .e-nav__link:after {
            -webkit-transition: all .3s;
            transition: all .3s;
            z-index: 999;
            position: relative;
        }

        .e-nav__link:after {
            content: "Home Page";
        }

        .e-nav__link:hover:before {
            top: -60px;
            right: -50px;
        }

        .e-nav__link:hover {
            color: #fff;
        }

        .e-nav__link:nth-child(2):hover:after {
            color: #fff;
        }
        /* 2.1. END Section Error */

        /* 2.2. Social style */
        .error__social {
            position: absolute;
            top: 50%;
            -webkit-transform: translateY(-50%);
            transform: translateY(-50%);
            left: 20px;
            z-index: 10;
        }

        .e-social__list {
            margin: 0;
            padding: 0;
            list-style-type: none;
        }

        .e-social__icon {
            padding-bottom: 30px;
        }

        .e-social__icon:last-child {
            padding-bottom: 0;
        }

        .e-social__link {
            color: #fff;
            -webkit-transition: all .25s ease;
            transition: all .25s ease;
            display: block;
        }

        .e-social__link:hover {
            opacity: .7;
        }
        /* 2.2. END Social style */

        /* 2.3. Lamp */
        .lamp {
            position: absolute;
            left: 0px;
            right: 0px;
            top: 0px;
            margin: 0px auto;
            width: 300px;
            display: flex;
            flex-direction: column;
            align-items: center;
            transform-origin: center top;
            animation-timing-function: cubic-bezier(0.6, 0, 0.38, 1);
            animation: move 5.1s infinite;
        }

        @keyframes move {
            0% {
                transform: rotate(40deg);
            }
            50% {
                transform: rotate(-40deg);
            }
            100% {
                transform: rotate(40deg);
            }
        }

        .cable {
            width: 8px;
            height: 248px;
            background-image: linear-gradient(rgb(32 148 218), rgb(193 65 25)), linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7));
        }

        .cover {
            width: 200px;
            height: 80px;
            background: #0bd5e8;
            border-top-left-radius: 50%;
            border-top-right-radius: 50%;
            position: relative;
            z-index: 200;
        }

        .in-cover {
            width: 100%;
            max-width: 200px;
            height: 20px;
            border-radius: 100%;
            background: #08ffff;
            position: absolute;
            left: 0px;
            right: 0px;
            margin: 0px auto;
            bottom: -9px;
            z-index: 100;
        }
        .in-cover .bulb {
            width: 50px;
            height: 50px;
            background-color: #08fffa;
            border-radius: 50%;
            position: absolute;
            left: 0px;
            right: 0px;
            bottom: -20px;
            margin: 0px auto;
            -webkit-box-shadow: 0 0 15px 7px rgba(0,255,255,0.8), 0 0 40px 25px rgba(0,255,255,0.5), -75px 0 30px 15px rgba(0,255,255,0.2);
            box-shadow: 0 0 25px 7px rgb(127 255 255), 0 0 64px 47px rgba(0,255,255,0.5), 0px 0 30px 15px rgba(0,255,255,0.2);
        }


        .light {
            width: 200px;
            height: 0px;
            border-bottom: 900px solid rgb(44 255 255);
            border-left: 50px solid transparent;
            border-right: 50px solid transparent;
            position: absolute;
            left: 0px;
            right: 0px;
            top: 270px;
            margin: 0px auto;
            z-index: 1;
            border-radius: 90px 90px 0px 0px;
        }
        /* 2.3. END Lamp */
        /***********************************
                    /* 2. END CONTENT */
        /***********************************/

        /***********************************
                    /* 3. RESPONSIVE */
        /***********************************/
        .error {
            overflow: hidden;
            max-height: 100vh;
        }
        @media (max-width: 1400px) {
            .lamp {
                zoom: .5;
            }
            .error__content {
                top: 55%;
            }
            .message__title {
                font-size: 3.5rem;
            }
        }
        @media (max-width: 900px) {

            .message__title {
                font-size: 34px;

            }
            .error__content {
                top: 55%;
            }
        }
        @media (max-width: 950px) {
            .lamp__wrap {
                max-height: 100vh;
                overflow: hidden;
                max-width: 100vw;
            }
            .error__social {
                bottom: 30px;
                top: auto;
                transform: none;
                width: 100%;
                position: fixed;
                left: 0;
            }
            .e-social__icon {
                display: inline-block;
                padding-right: 30px;
            }
            .e-social__icon:last-child {
                padding-right: 0;
            }
            .e-social__icon {
                padding-bottom: 0;
            }
        }
        @media (max-width: 750px) {
            body, html {
                max-height: 100vh;
            }
            .error__content {
                position: static;
                margin: 0 auto;
                transform: none;
                padding-top: 300px;
            }
            .error {
                padding-top: 0;
                padding-bottom: 100px;
                height: 100vh;
            }
        }
        @media (max-width: 650px) {
            .message__title {
                font-size: 36px;
                padding-bottom: 20px;
            }
            .message__text {
                font-size: 16px;
                line-height: 2;
                padding-right: 20px;
                padding-left: 20px;
            }
            .lamp {
                zoom: .6;
            }
            .error__content {
                padding-top: 180px;
            }
        }
        @media (max-width: 480px) {

            .message__title {
                font-size: 30px;
            }
            .message__text {
                padding-left: 10px;
                padding-right: 10px;
                font-size: 15px;
            }
            .error__nav {
                margin-top: 20px;
            }
        }
    </style>
    <meta name="description" content="AdminLTE2定制版">
    <meta name="keywords" content="AdminLTE2定制版">




    <!-- Tell the browser to be responsive to screen width -->
    <meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
    <!-- Bootstrap 3.3.6 -->
    <!-- Font Awesome -->
    <!-- Ionicons -->
    <!-- iCheck -->
    <!-- Morris chart -->
    <!-- jvectormap -->
    <!-- Date Picker -->
    <!-- Daterange picker -->
    <!-- Bootstrap time Picker -->
    <!--<link rel="stylesheet" href="../../../plugins/timepicker/bootstrap-timepicker.min.css">-->
    <!-- bootstrap wysihtml5 - text editor -->
    <!--数据表格-->
    <!-- 表格树 -->
    <!-- select2 -->
    <!-- Bootstrap Color Picker -->
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    <!--bootstrap-markdown-->
    <!-- Theme style -->
    <!-- AdminLTE Skins. Choose a skin from the css/skins
       folder instead of downloading all of them to reduce the load. -->
    <!-- Ion Slider -->
    <!-- ion slider Nice -->
    <!-- bootstrap slider -->
    <!-- bootstrap-datetimepicker -->

    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
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    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->








    <!-- jQuery 2.2.3 -->
    <!-- jQuery UI 1.11.4 -->
    <!-- Resolve conflict in jQuery UI tooltip with Bootstrap tooltip -->
    <!-- Bootstrap 3.3.6 -->
    <!-- Morris.js charts -->
    <!-- Sparkline -->
    <!-- jvectormap -->
    <!-- jQuery Knob Chart -->
    <!-- daterangepicker -->
    <!-- datepicker -->
    <!-- Bootstrap WYSIHTML5 -->
    <!-- Slimscroll -->
    <!-- FastClick -->
    <!-- iCheck -->
    <!-- AdminLTE App -->
    <!-- 表格树 -->
    <!-- select2 -->
    <!-- bootstrap color picker -->
    <!-- bootstrap time picker -->
    <!--<script src="../../../plugins/timepicker/bootstrap-timepicker.min.js"></script>-->
    <!-- Bootstrap WYSIHTML5 -->
    <!--bootstrap-markdown-->
    <!-- CK Editor -->
    <!-- InputMask -->
    <!-- DataTables -->
    <!-- ChartJS 1.0.1 -->
    <!-- FLOT CHARTS -->
    <!-- FLOT RESIZE PLUGIN - allows the chart to redraw when the window is resized -->
    <!-- FLOT PIE PLUGIN - also used to draw donut charts -->
    <!-- FLOT CATEGORIES PLUGIN - Used to draw bar charts -->
    <!-- jQuery Knob -->
    <!-- Sparkline -->
    <!-- Morris.js charts -->
    <!-- Ion Slider -->
    <!-- Bootstrap slider -->
    <!-- bootstrap-datetimepicker -->
    <!-- 页面meta /-->

    <link rel="stylesheet" href="plugins/bootstrap/css/bootstrap.min.css">
    <link rel="stylesheet" href="plugins/font-awesome/css/font-awesome.min.css">
    <link rel="stylesheet" href="plugins/ionicons/css/ionicons.min.css">
    <link rel="stylesheet" href="plugins/iCheck/square/blue.css">
    <link rel="stylesheet" href="plugins/morris/morris.css">
    <link rel="stylesheet" href="plugins/jvectormap/jquery-jvectormap-1.2.2.css">
    <link rel="stylesheet" href="plugins/datepicker/datepicker3.css">
    <link rel="stylesheet" href="plugins/daterangepicker/daterangepicker.css">
    <link rel="stylesheet" href="plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.min.css">
    <link rel="stylesheet" href="plugins/datatables/dataTables.bootstrap.css">
    <link rel="stylesheet" href="plugins/treeTable/jquery.treetable.css">
    <link rel="stylesheet" href="plugins/treeTable/jquery.treetable.theme.default.css">
    <link rel="stylesheet" href="plugins/select2/select2.css">
    <link rel="stylesheet" href="plugins/colorpicker/bootstrap-colorpicker.min.css">
    <link rel="stylesheet" href="plugins/bootstrap-markdown/css/bootstrap-markdown.min.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/AdminLTE.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/skins/_all-skins.min.css">
    <link rel="stylesheet" href="css/style.css">
    <link rel="stylesheet" href="plugins/ionslider/ion.rangeSlider.css">
    <link rel="stylesheet" href="plugins/ionslider/ion.rangeSlider.skinNice.css">
    <link rel="stylesheet" href="plugins/bootstrap-slider/slider.css">
    <link rel="stylesheet" href="plugins/bootstrap-datetimepicker/bootstrap-datetimepicker.css">
</head>

<body class="hold-transition skin-green sidebar-mini">

<div class="wrapper">

    <!-- 页面头部 -->
    <header class="main-header">


        <!-- Logo -->
        <a href="first.jsp" class="logo">
            <!-- mini logo for sidebar mini 50x50 pixels -->
            <span class="logo-mini"><b>易宿</b></span>
            <!-- logo for regular state and mobile devices -->
            <span class="logo-lg"><b>易宿</b>后台管理</span>
        </a>


        <!-- Header Navbar: style can be found in header.less -->
        <nav class="navbar navbar-static-top">
            <!-- Sidebar toggle button-->
            <a href="#" class="sidebar-toggle" data-toggle="offcanvas" role="button">
                <span class="sr-only">Toggle navigation</span>
            </a>

            <div class="navbar-custom-menu">
                <ul class="nav navbar-nav">
                    <!-- Messages: style can be found in dropdown.less-->
                    <li class="dropdown messages-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-envelope-o"></i>
                            <span class="label label-success">4</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有4个邮件</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <!-- start message -->
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="./img/OIP.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                系统消息
                                                <small><i class="fa fa-clock-o"></i> 5 分钟前</small>
                                            </h4>
                                            <p>欢迎登录系统?</p>
                                        </a>
                                    </li>
                                    <!-- end message -->
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                团队消息
                                                <small><i class="fa fa-clock-o"></i> 2 小时前</small>
                                            </h4>
                                            <p>你有新的任务了</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Developers
                                                <small><i class="fa fa-clock-o"></i> Today</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Sales Department
                                                <small><i class="fa fa-clock-o"></i> Yesterday</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Reviewers
                                                <small><i class="fa fa-clock-o"></i> 2 days</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                </ul>
                            </li>
                            <li class="footer"><a href="#">See All Messages</a></li>
                        </ul>
                    </li>
                    <!-- Notifications: style can be found in dropdown.less -->
                    <li class="dropdown notifications-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-bell-o"></i>
                            <span class="label label-warning">10</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有10个新消息</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-users text-aqua"></i> 5 new members joined today
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-warning text-yellow"></i> Very long description here that may not
                                            fit into the page and may cause design problems
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-users text-red"></i> 5 new members joined
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-shopping-cart text-green"></i> 25 sales made
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-user text-red"></i> You changed your username
                                        </a>
                                    </li>
                                </ul>
                            </li>
                            <li class="footer"><a href="#">View all</a></li>
                        </ul>
                    </li>
                    <!-- Tasks: style can be found in dropdown.less -->
                    <li class="dropdown tasks-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-flag-o"></i>
                            <span class="label label-danger">9</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有9个新任务</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Design some buttons
                                                <small class="pull-right">20%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-aqua" style="width: 20%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">20% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Create a nice theme
                                                <small class="pull-right">40%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-green" style="width: 40%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">40% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Some task I need to do
                                                <small class="pull-right">60%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-red" style="width: 60%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">60% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Make beautiful transitions
                                                <small class="pull-right">80%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-yellow" style="width: 80%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">80% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                </ul>
                            </li>
                            <li class="footer">
                                <a href="#">View all tasks</a>
                            </li>
                        </ul>
                    </li>
                    <!-- User Account: style can be found in dropdown.less -->
                    <li class="dropdown user user-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <img src="img/OIP.jpg" class="user-image" alt="User Image">
                            <span class="hidden-xs">欢迎${user}大驾光临</span>
                        </a>
                        <ul class="dropdown-menu">
                            <!-- User image -->
                            <li class="user-header">
                                <img src="img/OIP.jpg" class="img-circle" alt="User Image">

                                <p>
                                    -${userType}-${user}
                                    <small>${accessTime}</small>
                                </p>
                            </li>
                            <!-- Menu Body
                    <li class="user-body">
                        <div class="row">
                            <div class="col-xs-4 text-center">
                                <a href="#">Followers</a>
                            </div>
                            <div class="col-xs-4 text-center">
                                <a href="#">Sales</a>
                            </div>
                            <div class="col-xs-4 text-center">
                                <a href="#">Friends</a>
                            </div>
                        </div>
                    </li>-->
                            <!-- Menu Footer-->
                            <li class="user-footer">
                                <div class="pull-left">
                                    <a href="ChangePassword.jsp" class="btn btn-default btn-flat">修改密码</a>
                                </div>
                                <div class="pull-right">
                                    <a href="index.jsp" class="btn btn-default btn-flat">注销</a>
                                </div>
                            </li>
                        </ul>
                    </li>

                </ul>
            </div>
        </nav>
    </header>
    <!-- 页面头部 /-->

    <!-- 导航侧栏 -->
    <aside class="main-sidebar">
        <!-- sidebar: style can be found in sidebar.less -->
        <section class="sidebar">
            <!-- Sidebar user panel -->
            <div class="user-panel">
                <div class="pull-left image">
                    <img src="img/OIP.jpg" class="img-circle" alt="User Image">
                </div>
                <div class="pull-left info">
                    <p>欢迎${user}大驾光临</p>
                    <a href="#"><i class="fa fa-circle text-success"></i> 在线</a>
                </div>
            </div>
            <!-- search form -->
            <!--<form action="#" method="get" class="sidebar-form">
        <div class="input-group">
            <input type="text" name="q" class="form-control" placeholder="搜索...">
            <span class="input-group-btn">
            <button type="submit" name="search" id="search-btn" class="btn btn-flat"><i class="fa fa-search"></i>
            </button>
          </span>
        </div>
    </form>-->
            <!-- /.search form -->


            <!-- sidebar menu: : style can be found in sidebar.less -->
            <ul class="sidebar-menu">
                <li class="header">菜单</li>

                <li id="admin-index"><a href="first.jsp"><i class="fa fa-dashboard"></i> <span>首页</span></a></li>

                <!-- 菜单 -->



                <li class="treeview">
                    <a href="#">
                        <i class="glyphicon glyphicon-education"></i> <span>学生信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">
                        <li id="admin-list">
                            <a href="${pageContext.request.contextPath}/student.do">
                                <i class="fa fa-user"></i> 学生信息
                            </a>
                        </li>
                        <li id="admin-register">
                            <a href="add.jsp">
                                <i class="fa fa-user-plus"></i> 添加学生信息
                            </a>
                        </li>
                    </ul>

                <li class="treeview">
                    <a href="#">
                        <i class="glyphicon glyphicon-user"></i> <span>教师信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">

                        <li id="charts-chartjs">
                            <a href="${pageContext.request.contextPath}/teacher.do">
                                <i class="fa fa-circle-o"></i> 教师信息
                            </a>
                        </li>
                        <li id="addTeacher">
                            <a href="addTeacher.jsp">
                                <i class="fa fa-circle-o"></i> 添加教师信息
                            </a>
                        </li>
                    </ul>
                <li class="treeview">
                    <a href="${pageContext.request.contextPath}/course.do">
                        <i class="fa fa-cogs"></i> <span>课程信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">

                        <li id="system-setting">
                            <a href="${pageContext.request.contextPath}/course.do">
                                <i class="fa fa-circle-o"></i> 课程信息
                            </a>
                        </li>
                        <li id="addClass">
                            <a href="${pageContext.request.contextPath}/course.do?method=new">
                                <i class="fa fa-circle-o"></i> 添加课程信息
                            </a>
                        </li>
                        <li id="selectClass">
                            <a href="${pageContext.request.contextPath}/select.do?method=new">
                                <i class="fa fa-circle-o"></i> 查看自己的选课
                            </a>
                        </li>
                    </ul>
                </li>
            </ul>
        </section>
        <!-- /.sidebar -->
    </aside>
    <!-- 导航侧栏 /-->

    <!-- 内容区域 -->
    <header class="top-header">
    </header>

    <!--dust particel-->
    <div>
        <div class="starsec"></div>
        <div class="starthird"></div>
        <div class="starfourth"></div>
        <div class="starfifth"></div>
    </div>
    <!--Dust particle end--->


    <div class="lamp__wrap">
        <div class="lamp">
            <div class="cable"></div>
            <div class="cover"></div>
            <div class="in-cover">
                <div class="bulb"></div>
            </div>
            <div class="light"></div>
        </div>
    </div>
    <!-- END Lamp -->
    <section class="error">
        <!-- Content -->
        <div class="error__content">
            <div class="error__message message">
                <h1 class="message__title">500</h1>
                <p class="message__text"> Oops! 页面程序有错误.错误原因如下：${error}</p>
            </div>
            <div class="error__nav e-nav">
                <a  class="e-nav__link" href="first.jsp"></a>
            </div>
        </div>
        <!-- END Content -->

    </section>

    <!-- 内容区域 /-->




    <!-- 底部导航 -->
    <footer class="main-footer">
        <div class="pull-right hidden-xs">
            <b>Version</b> 1.0.8
        </div>
        <strong>Copyright &copy; 2020 <a href="https://studentliuchang.gitee.io/">中德学院-物联网工程二班-刘畅</a>.</strong> All rights reserved.
    </footer>
    <!-- 底部导航 /-->

</div>


<script src="plugins/jQuery/jquery-2.2.3.min.js"></script>
<script src="plugins/jQueryUI/jquery-ui.min.js"></script>
<script>
    $.widget.bridge('uibutton', $.ui.button);
</script>
<script src="plugins/bootstrap/js/bootstrap.min.js"></script>
<script src="plugins/raphael/raphael-min.js"></script>
<script src="plugins/morris/morris.min.js"></script>
<script src="plugins/sparkline/jquery.sparkline.min.js"></script>
<script src="plugins/jvectormap/jquery-jvectormap-1.2.2.min.js"></script>
<script src="plugins/jvectormap/jquery-jvectormap-world-mill-en.js"></script>
<script src="plugins/knob/jquery.knob.js"></script>
<script src="plugins/daterangepicker/moment.min.js"></script>
<script src="plugins/daterangepicker/daterangepicker.js"></script>
<script src="plugins/daterangepicker/daterangepicker.zh-CN.js"></script>
<script src="plugins/datepicker/bootstrap-datepicker.js"></script>
<script src="plugins/datepicker/locales/bootstrap-datepicker.zh-CN.js"></script>
<script src="plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.all.min.js"></script>
<script src="plugins/slimScroll/jquery.slimscroll.min.js"></script>
<script src="plugins/fastclick/fastclick.js"></script>
<script src="plugins/iCheck/icheck.min.js"></script>
<script src="plugins/adminLTE/js/app.min.js"></script>
<script src="plugins/treeTable/jquery.treetable.js"></script>
<script src="plugins/select2/select2.full.min.js"></script>
<script src="plugins/colorpicker/bootstrap-colorpicker.min.js"></script>
<script src="plugins/bootstrap-wysihtml5/bootstrap-wysihtml5.zh-CN.js"></script>
<script src="plugins/bootstrap-markdown/js/bootstrap-markdown.js"></script>
<script src="plugins/bootstrap-markdown/locale/bootstrap-markdown.zh.js"></script>
<script src="plugins/bootstrap-markdown/js/markdown.js"></script>
<script src="plugins/bootstrap-markdown/js/to-markdown.js"></script>
<script src="plugins/ckeditor/ckeditor.js"></script>
<script src="plugins/input-mask/jquery.inputmask.js"></script>
<script src="plugins/input-mask/jquery.inputmask.date.extensions.js"></script>
<script src="plugins/input-mask/jquery.inputmask.extensions.js"></script>
<script src="plugins/datatables/jquery.dataTables.min.js"></script>
<script src="plugins/datatables/dataTables.bootstrap.min.js"></script>
<script src="plugins/chartjs/Chart.min.js"></script>
<script src="plugins/flot/jquery.flot.min.js"></script>
<script src="plugins/flot/jquery.flot.resize.min.js"></script>
<script src="plugins/flot/jquery.flot.pie.min.js"></script>
<script src="plugins/flot/jquery.flot.categories.min.js"></script>
<script src="plugins/ionslider/ion.rangeSlider.min.js"></script>
<script src="plugins/bootstrap-slider/bootstrap-slider.js"></script>
<script src="plugins/bootstrap-datetimepicker/bootstrap-datetimepicker.js"></script>
<script src="plugins/bootstrap-datetimepicker/locales/bootstrap-datetimepicker.zh-CN.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath }/js/studentList.js"></script>
</body>

</html>

样式二：

在这里插入图片描述

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<!DOCTYPE html>
<html>

<head>
    <!-- 页面meta -->
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">




    <title>Hi~ 你访问的网页有错误哦~</title>
    <style type="text/css">
        html,body {
            margin:0px;
            overflow:hidden;
        }
        .dwo {
            position:absolute;
            top:0%;
            left:0%;
            height:100%;
            width:100%;
            margin:0px;
            background:radial-gradient(circle,#240015 0%,#12000b 100%);
            overflow:hidden;
        }
        .wrap {
            position:absolute;
            left:50%;
            top:50%;
            transform:translate(-50%,-50%);
        }
        h2 {
            position:absolute;
            top:50%;
            left:50%;
            margin-top:50px;
            font-size:32px;
            text-transform:uppercase;
            transform:translate(-50%,-50%);
            display:block;
            color:#12000a;
            font-weight:300;
            font-family:Audiowide;
            text-shadow:0px 0px 4px #12000a;
            animation:fadeInText 3s ease-in 3.5s forwards,flicker4 5s linear 7.5s infinite,hueRotate 6s ease-in-out 3s infinite;
        }
        .dwo-home {
            position:absolute;
            top:60%;
            left:50%;
            margin-top:100px;
            font-size:32px;
            text-transform:uppercase;
            transform:translate(-50%,-50%);
            display:block;
            color:#12000a;
            font-weight:300;
            font-family:Audiowide;
            text-shadow:0px 0px 4px #12000a;
            animation:fadeInText 3s ease-in 3.5s forwards,flicker4 5s linear 7.5s infinite,hueRotate 6s ease-in-out 3s infinite;
        }
        #svgWrap_1,#svgWrap_2 {
            position:absolute;
            height:auto;
            width:600px;
            max-width:100%;
            top:40%;
            left:50%;
            transform:translate(-50%,-50%);
        }
        #svgWrap_1,#svgWrap_2,div {
            animation:hueRotate 6s ease-in-out 3s infinite;
        }
        #id1_1,#id2_1,#id3_1 {
            stroke:#ff005d;
            stroke-width:3px;
            fill:transparent;
            filter:url(#glow);
        }
        #id1_2,#id2_2,#id3_2 {
            stroke:#12000a;
            stroke-width:3px;
            fill:transparent;
            filter:url(#glow);
        }
        #id3_1 {
            stroke-dasharray:940px;
            stroke-dashoffset:-940px;
            animation:drawLine3 2.5s ease-in-out 0s forwards,flicker3 4s linear 4s infinite;
        }
        #id2_1 {
            stroke-dasharray:735px;
            stroke-dashoffset:-735px;
            animation:drawLine2 2.5s ease-in-out 0.5s forwards,flicker2 4s linear 4.5s infinite;
        }
        #id1_1 {
            stroke-dasharray:940px;
            stroke-dashoffset:-940px;
            animation:drawLine1 2.5s ease-in-out 1s forwards,flicker1 4s linear 5s infinite;
        }
        @keyframes drawLine1 {
            0% {
                stroke-dashoffset:-940px;
            }
            100% {
                stroke-dashoffset:0px;
            }
        }@keyframes drawLine2 {
             0% {
                 stroke-dashoffset:-735px;
             }
             100% {
                 stroke-dashoffset:0px;
             }
         }@keyframes drawLine3 {
              0% {
                  stroke-dashoffset:-940px;
              }
              100% {
                  stroke-dashoffset:0px;
              }
          }@keyframes flicker1 {
               0% {
                   stroke:#ff005d;
               }
               1% {
                   stroke:transparent;
               }
               3% {
                   stroke:transparent;
               }
               4% {
                   stroke:#ff005d;
               }
               6% {
                   stroke:#ff005d;
               }
               7% {
                   stroke:transparent;
               }
               13% {
                   stroke:transparent;
               }
               14% {
                   stroke:#ff005d;
               }
               100% {
                   stroke:#ff005d;
               }
           }@keyframes flicker2 {
                0% {
                    stroke:#ff005d;
                }
                50% {
                    stroke:#ff005d;
                }
                51% {
                    stroke:transparent;
                }
                61% {
                    stroke:transparent;
                }
                62% {
                    stroke:#ff005d;
                }
                100% {
                    stroke:#ff005d;
                }
            }@keyframes flicker3 {
                 0% {
                     stroke:#ff005d;
                 }
                 1% {
                     stroke:transparent;
                 }
                 10% {
                     stroke:transparent;
                 }
                 11% {
                     stroke:#ff005d;
                 }
                 40% {
                     stroke:#ff005d;
                 }
                 41% {
                     stroke:transparent;
                 }
                 45% {
                     stroke:transparent;
                 }
                 46% {
                     stroke:#ff005d;
                 }
                 100% {
                     stroke:#ff005d;
                 }
             }@keyframes flicker4 {
                  0% {
                      color:#ff005d;
                      text-shadow:0px 0px 4px #ff005d;
                  }
                  30% {
                      color:#ff005d;
                      text-shadow:0px 0px 4px #ff005d;
                  }
                  31% {
                      color:#12000a;
                      text-shadow:0px 0px 4px #12000a;
                  }
                  32% {
                      color:#ff005d;
                      text-shadow:0px 0px 4px #ff005d;
                  }
                  36% {
                      color:#ff005d;
                      text-shadow:0px 0px 4px #ff005d;
                  }
                  37% {
                      color:#12000a;
                      text-shadow:0px 0px 4px #12000a;
                  }
                  41% {
                      color:#12000a;
                      text-shadow:0px 0px 4px #12000a;
                  }
                  42% {
                      color:#ff005d;
                      text-shadow:0px 0px 4px #ff005d;
                  }
                  85% {
                      color:#ff005d;
                      text-shadow:0px 0px 4px #ff005d;
                  }
                  86% {
                      color:#12000a;
                      text-shadow:0px 0px 4px #12000a;
                  }
                  95% {
                      color:#12000a;
                      text-shadow:0px 0px 4px #12000a;
                  }
                  96% {
                      color:#ff005d;
                      text-shadow:0px 0px 4px #ff005d;
                  }
                  100% {
                      color:#ff005d;
                      text-shadow:0px 0px 4px #ff005d;
                  }
              }@keyframes fadeInText {
                   1% {
                       color:#12000a;
                       text-shadow:0px 0px 4px #12000a;
                   }
                   70% {
                       color:#ff005d;
                       text-shadow:0px 0px 14px #ff005d;
                   }
                   100% {
                       color:#ff005d;
                       text-shadow:0px 0px 4px #ff005d;
                   }
               }@keyframes hueRotate {
                    0% {
                        filter:hue-rotate(0deg);
                    }
                    50% {
                        filter:hue-rotate(-120deg);
                    }
                    100% {
                        filter:hue-rotate(0deg);
                    }
                }
    </style>
    <meta name="description" content="AdminLTE2定制版">
    <meta name="keywords" content="AdminLTE2定制版">




    <!-- Tell the browser to be responsive to screen width -->
    <meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
    <!-- Bootstrap 3.3.6 -->
    <!-- Font Awesome -->
    <!-- Ionicons -->
    <!-- iCheck -->
    <!-- Morris chart -->
    <!-- jvectormap -->
    <!-- Date Picker -->
    <!-- Daterange picker -->
    <!-- Bootstrap time Picker -->
    <!--<link rel="stylesheet" href="../../../plugins/timepicker/bootstrap-timepicker.min.css">-->
    <!-- bootstrap wysihtml5 - text editor -->
    <!--数据表格-->
    <!-- 表格树 -->
    <!-- select2 -->
    <!-- Bootstrap Color Picker -->
    <!-- bootstrap wysihtml5 - text editor -->
    <!--bootstrap-markdown-->
    <!-- Theme style -->
    <!-- AdminLTE Skins. Choose a skin from the css/skins
       folder instead of downloading all of them to reduce the load. -->
    <!-- Ion Slider -->
    <!-- ion slider Nice -->
    <!-- bootstrap slider -->
    <!-- bootstrap-datetimepicker -->

    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->








    <!-- jQuery 2.2.3 -->
    <!-- jQuery UI 1.11.4 -->
    <!-- Resolve conflict in jQuery UI tooltip with Bootstrap tooltip -->
    <!-- Bootstrap 3.3.6 -->
    <!-- Morris.js charts -->
    <!-- Sparkline -->
    <!-- jvectormap -->
    <!-- jQuery Knob Chart -->
    <!-- daterangepicker -->
    <!-- datepicker -->
    <!-- Bootstrap WYSIHTML5 -->
    <!-- Slimscroll -->
    <!-- FastClick -->
    <!-- iCheck -->
    <!-- AdminLTE App -->
    <!-- 表格树 -->
    <!-- select2 -->
    <!-- bootstrap color picker -->
    <!-- bootstrap time picker -->
    <!--<script src="../../../plugins/timepicker/bootstrap-timepicker.min.js"></script>-->
    <!-- Bootstrap WYSIHTML5 -->
    <!--bootstrap-markdown-->
    <!-- CK Editor -->
    <!-- InputMask -->
    <!-- DataTables -->
    <!-- ChartJS 1.0.1 -->
    <!-- FLOT CHARTS -->
    <!-- FLOT RESIZE PLUGIN - allows the chart to redraw when the window is resized -->
    <!-- FLOT PIE PLUGIN - also used to draw donut charts -->
    <!-- FLOT CATEGORIES PLUGIN - Used to draw bar charts -->
    <!-- jQuery Knob -->
    <!-- Sparkline -->
    <!-- Morris.js charts -->
    <!-- Ion Slider -->
    <!-- Bootstrap slider -->
    <!-- bootstrap-datetimepicker -->
    <!-- 页面meta /-->

    <link rel="stylesheet" href="plugins/bootstrap/css/bootstrap.min.css">
    <link rel="stylesheet" href="plugins/font-awesome/css/font-awesome.min.css">
    <link rel="stylesheet" href="plugins/ionicons/css/ionicons.min.css">
    <link rel="stylesheet" href="plugins/iCheck/square/blue.css">
    <link rel="stylesheet" href="plugins/morris/morris.css">
    <link rel="stylesheet" href="plugins/jvectormap/jquery-jvectormap-1.2.2.css">
    <link rel="stylesheet" href="plugins/datepicker/datepicker3.css">
    <link rel="stylesheet" href="plugins/daterangepicker/daterangepicker.css">
    <link rel="stylesheet" href="plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.min.css">
    <link rel="stylesheet" href="plugins/datatables/dataTables.bootstrap.css">
    <link rel="stylesheet" href="plugins/treeTable/jquery.treetable.css">
    <link rel="stylesheet" href="plugins/treeTable/jquery.treetable.theme.default.css">
    <link rel="stylesheet" href="plugins/select2/select2.css">
    <link rel="stylesheet" href="plugins/colorpicker/bootstrap-colorpicker.min.css">
    <link rel="stylesheet" href="plugins/bootstrap-markdown/css/bootstrap-markdown.min.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/AdminLTE.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/skins/_all-skins.min.css">
    <link rel="stylesheet" href="css/style.css">
    <link rel="stylesheet" href="plugins/ionslider/ion.rangeSlider.css">
    <link rel="stylesheet" href="plugins/ionslider/ion.rangeSlider.skinNice.css">
    <link rel="stylesheet" href="plugins/bootstrap-slider/slider.css">
    <link rel="stylesheet" href="plugins/bootstrap-datetimepicker/bootstrap-datetimepicker.css">
</head>

<body class="hold-transition skin-green sidebar-mini">

<div class="wrapper">

    <!-- 页面头部 -->
    <header class="main-header">


        <!-- Logo -->
        <a href="first.jsp" class="logo">
            <!-- mini logo for sidebar mini 50x50 pixels -->
            <span class="logo-mini"><b>易宿</b></span>
            <!-- logo for regular state and mobile devices -->
            <span class="logo-lg"><b>易宿</b>后台管理</span>
        </a>


        <!-- Header Navbar: style can be found in header.less -->
        <nav class="navbar navbar-static-top">
            <!-- Sidebar toggle button-->
            <a href="#" class="sidebar-toggle" data-toggle="offcanvas" role="button">
                <span class="sr-only">Toggle navigation</span>
            </a>

            <div class="navbar-custom-menu">
                <ul class="nav navbar-nav">
                    <!-- Messages: style can be found in dropdown.less-->
                    <li class="dropdown messages-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-envelope-o"></i>
                            <span class="label label-success">4</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有4个邮件</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <!-- start message -->
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="./img/OIP.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                系统消息
                                                <small><i class="fa fa-clock-o"></i> 5 分钟前</small>
                                            </h4>
                                            <p>欢迎登录系统?</p>
                                        </a>
                                    </li>
                                    <!-- end message -->
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                团队消息
                                                <small><i class="fa fa-clock-o"></i> 2 小时前</small>
                                            </h4>
                                            <p>你有新的任务了</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Developers
                                                <small><i class="fa fa-clock-o"></i> Today</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Sales Department
                                                <small><i class="fa fa-clock-o"></i> Yesterday</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <div class="pull-left">
                                                <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image">
                                            </div>
                                            <h4>
                                                Reviewers
                                                <small><i class="fa fa-clock-o"></i> 2 days</small>
                                            </h4>
                                            <p>Why not buy a new awesome theme?</p>
                                        </a>
                                    </li>
                                </ul>
                            </li>
                            <li class="footer"><a href="#">See All Messages</a></li>
                        </ul>
                    </li>
                    <!-- Notifications: style can be found in dropdown.less -->
                    <li class="dropdown notifications-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-bell-o"></i>
                            <span class="label label-warning">10</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有10个新消息</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-users text-aqua"></i> 5 new members joined today
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-warning text-yellow"></i> Very long description here that may not
                                            fit into the page and may cause design problems
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-users text-red"></i> 5 new members joined
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-shopping-cart text-green"></i> 25 sales made
                                        </a>
                                    </li>
                                    <li>
                                        <a href="#">
                                            <i class="fa fa-user text-red"></i> You changed your username
                                        </a>
                                    </li>
                                </ul>
                            </li>
                            <li class="footer"><a href="#">View all</a></li>
                        </ul>
                    </li>
                    <!-- Tasks: style can be found in dropdown.less -->
                    <li class="dropdown tasks-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <i class="fa fa-flag-o"></i>
                            <span class="label label-danger">9</span>
                        </a>
                        <ul class="dropdown-menu">
                            <li class="header">你有9个新任务</li>
                            <li>
                                <!-- inner menu: contains the actual data -->
                                <ul class="menu">
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Design some buttons
                                                <small class="pull-right">20%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-aqua" style="width: 20%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">20% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Create a nice theme
                                                <small class="pull-right">40%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-green" style="width: 40%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">40% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Some task I need to do
                                                <small class="pull-right">60%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-red" style="width: 60%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">60% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                    <li>
                                        <!-- Task item -->
                                        <a href="#">
                                            <h3>
                                                Make beautiful transitions
                                                <small class="pull-right">80%</small>
                                            </h3>
                                            <div class="progress xs">
                                                <div class="progress-bar progress-bar-yellow" style="width: 80%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100">
                                                    <span class="sr-only">80% Complete</span>
                                                </div>
                                            </div>
                                        </a>
                                    </li>
                                    <!-- end task item -->
                                </ul>
                            </li>
                            <li class="footer">
                                <a href="#">View all tasks</a>
                            </li>
                        </ul>
                    </li>
                    <!-- User Account: style can be found in dropdown.less -->
                    <li class="dropdown user user-menu">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <img src="img/OIP.jpg" class="user-image" alt="User Image">
                            <span class="hidden-xs">欢迎${user}大驾光临</span>
                        </a>
                        <ul class="dropdown-menu">
                            <!-- User image -->
                            <li class="user-header">
                                <img src="img/OIP.jpg" class="img-circle" alt="User Image">

                                <p>
                                    -${userType}-${user}
                                    <small>${accessTime}</small>
                                </p>
                            </li>
                            <!-- Menu Body
                    <li class="user-body">
                        <div class="row">
                            <div class="col-xs-4 text-center">
                                <a href="#">Followers</a>
                            </div>
                            <div class="col-xs-4 text-center">
                                <a href="#">Sales</a>
                            </div>
                            <div class="col-xs-4 text-center">
                                <a href="#">Friends</a>
                            </div>
                        </div>
                    </li>-->
                            <!-- Menu Footer-->
                            <li class="user-footer">
                                <div class="pull-left">
                                    <a href="ChangePassword.jsp" class="btn btn-default btn-flat">修改密码</a>
                                </div>
                                <div class="pull-right">
                                    <a href="index.jsp" class="btn btn-default btn-flat">注销</a>
                                </div>
                            </li>
                        </ul>
                    </li>

                </ul>
            </div>
        </nav>
    </header>
    <!-- 页面头部 /-->

    <!-- 导航侧栏 -->
    <aside class="main-sidebar">
        <!-- sidebar: style can be found in sidebar.less -->
        <section class="sidebar">
            <!-- Sidebar user panel -->
            <div class="user-panel">
                <div class="pull-left image">
                    <img src="img/OIP.jpg" class="img-circle" alt="User Image">
                </div>
                <div class="pull-left info">
                    <p>欢迎${user}大驾光临</p>
                    <a href="#"><i class="fa fa-circle text-success"></i> 在线</a>
                </div>
            </div>
            <!-- search form -->
            <!--<form action="#" method="get" class="sidebar-form">
        <div class="input-group">
            <input type="text" name="q" class="form-control" placeholder="搜索...">
            <span class="input-group-btn">
            <button type="submit" name="search" id="search-btn" class="btn btn-flat"><i class="fa fa-search"></i>
            </button>
          </span>
        </div>
    </form>-->
            <!-- /.search form -->


            <!-- sidebar menu: : style can be found in sidebar.less -->
            <ul class="sidebar-menu">
                <li class="header">菜单</li>

                <li id="admin-index"><a href="first.jsp"><i class="fa fa-dashboard"></i> <span>首页</span></a></li>

                <!-- 菜单 -->



                <li class="treeview">
                    <a href="#">
                        <i class="glyphicon glyphicon-education"></i> <span>学生信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">
                        <li id="admin-list">
                            <a href="${pageContext.request.contextPath}/student.do">
                                <i class="fa fa-user"></i> 学生信息
                            </a>
                        </li>
                        <li id="admin-register">
                            <a href="add.jsp">
                                <i class="fa fa-user-plus"></i> 添加学生信息
                            </a>
                        </li>
                    </ul>

                <li class="treeview">
                    <a href="#">
                        <i class="glyphicon glyphicon-user"></i> <span>教师信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">

                        <li id="charts-chartjs">
                            <a href="${pageContext.request.contextPath}/teacher.do">
                                <i class="fa fa-circle-o"></i> 教师信息
                            </a>
                        </li>
                        <li id="addTeacher">
                            <a href="addTeacher.jsp">
                                <i class="fa fa-circle-o"></i> 添加教师信息
                            </a>
                        </li>
                    </ul>
                <li class="treeview">
                    <a href="${pageContext.request.contextPath}/course.do">
                        <i class="fa fa-cogs"></i> <span>课程信息管理</span>
                        <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                    </a>
                    <ul class="treeview-menu">

                        <li id="system-setting">
                            <a href="${pageContext.request.contextPath}/course.do">
                                <i class="fa fa-circle-o"></i> 课程信息
                            </a>
                        </li>
                        <li id="addClass">
                            <a href="${pageContext.request.contextPath}/course.do?method=new">
                                <i class="fa fa-circle-o"></i> 添加课程信息
                            </a>
                        </li>
                        <li id="selectClass">
                            <a href="${pageContext.request.contextPath}/select.do?method=new">
                                <i class="fa fa-circle-o"></i> 查看自己的选课
                            </a>
                        </li>
                    </ul>
                </li>
            </ul>
        </section>
        <!-- /.sidebar -->
    </aside>
    <!-- 导航侧栏 /-->

    <!-- 内容区域 -->
    <div class="content-wrapper">
        <!-- Content Header (Page header) -->
        <!-- Main content -->
        <section class="content">
            <div class="error-page">
                <h2 class="headline text-red"> 500</h2>

                <div class="error-content">
                    <h3><i class="fa fa-warning text-red"></i> Oops! 页面程序有错误.</h3>

                </div>
                <!-- /.error-content -->
            </div>
            <div class="dwo"></div>
            <svg id="svgWrap_2" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 700 250">
                <g>
                    <path id="id3_2" d="M195.7 232.67h-37.1V149.7H27.76c-2.64 0-5.1-.5-7.36-1.49-2.27-.99-4.23-2.31-5.88-3.96-1.65-1.65-2.95-3.61-3.89-5.88s-1.42-4.67-1.42-7.22V29.62h36.82v82.98H158.6V29.62h37.1v203.05z"></path>
                    <path id="id2_2" d="M470.69 147.71c0 8.31-1.06 16.17-3.19 23.58-2.12 7.41-5.12 14.28-8.99 20.6-3.87 6.33-8.45 11.99-13.74 16.99-5.29 5-11.07 9.28-17.35 12.81a85.146 85.146 0 0 1-20.04 8.14 83.637 83.637 0 0 1-21.67 2.83H319.3c-7.46 0-14.73-.94-21.81-2.83-7.08-1.89-13.76-4.6-20.04-8.14a88.292 88.292 0 0 1-17.35-12.81c-5.29-5-9.84-10.67-13.66-16.99-3.82-6.32-6.8-13.19-8.92-20.6-2.12-7.41-3.19-15.27-3.19-23.58v-33.13c0-12.46 2.34-23.88 7.01-34.27 4.67-10.38 10.92-19.33 18.76-26.83 7.83-7.5 16.87-13.36 27.12-17.56 10.24-4.2 20.93-6.3 32.07-6.3h66.41c7.36 0 14.58.94 21.67 2.83 7.08 1.89 13.76 4.6 20.04 8.14a88.292 88.292 0 0 1 17.35 12.81c5.29 5 9.86 10.67 13.74 16.99 3.87 6.33 6.87 13.19 8.99 20.6 2.13 7.41 3.19 15.27 3.19 23.58v33.14zm-37.1-33.13c0-7.27-1.32-13.88-3.96-19.82-2.64-5.95-6.16-11.04-10.55-15.29-4.39-4.25-9.46-7.5-15.22-9.77-5.76-2.27-11.8-3.35-18.13-3.26h-66.41c-6.14-.09-12.11.97-17.91 3.19-5.81 2.22-10.95 5.43-15.44 9.63-4.48 4.2-8.07 9.3-10.76 15.29-2.69 6-4.04 12.67-4.04 20.04v33.13c0 7.36 1.32 14.02 3.96 19.97 2.64 5.95 6.18 11.02 10.62 15.22 4.44 4.2 9.56 7.43 15.36 9.7 5.8 2.27 11.87 3.35 18.2 3.26h66.41c7.27 0 13.85-1.2 19.75-3.61s10.93-5.73 15.08-9.98 7.36-9.32 9.63-15.22c2.27-5.9 3.4-12.34 3.4-19.33v-33.15zm-16-26.91a17.89 17.89 0 0 1 2.83 6.73c.47 2.41.47 4.77 0 7.08-.47 2.31-1.39 4.48-2.76 6.51-1.37 2.03-3.14 3.75-5.31 5.17l-99.4 66.41c-1.61 1.23-3.26 2.08-4.96 2.55-1.7.47-3.45.71-5.24.71-3.02 0-5.9-.71-8.64-2.12-2.74-1.42-4.96-3.44-6.66-6.09a17.89 17.89 0 0 1-2.83-6.73c-.47-2.41-.5-4.77-.07-7.08.43-2.31 1.3-4.48 2.62-6.51 1.32-2.03 3.07-3.75 5.24-5.17l99.69-66.41a17.89 17.89 0 0 1 6.73-2.83c2.41-.47 4.77-.47 7.08 0 2.31.47 4.48 1.37 6.51 2.69 2.03 1.32 3.75 3.02 5.17 5.09z"></path>
                    <path id="id1_2" d="M688.33 232.67h-37.1V149.7H520.39c-2.64 0-5.1-.5-7.36-1.49-2.27-.99-4.23-2.31-5.88-3.96-1.65-1.65-2.95-3.61-3.89-5.88s-1.42-4.67-1.42-7.22V29.62h36.82v82.98h112.57V29.62h37.1v203.05z"></path>
                </g>
            </svg>
            <svg id="svgWrap_1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 700 250">
                <g>
                    <path id="id3_1" d="M195.7 232.67h-37.1V149.7H27.76c-2.64 0-5.1-.5-7.36-1.49-2.27-.99-4.23-2.31-5.88-3.96-1.65-1.65-2.95-3.61-3.89-5.88s-1.42-4.67-1.42-7.22V29.62h36.82v82.98H158.6V29.62h37.1v203.05z"></path>
                    <path id="id2_1" d="M470.69 147.71c0 8.31-1.06 16.17-3.19 23.58-2.12 7.41-5.12 14.28-8.99 20.6-3.87 6.33-8.45 11.99-13.74 16.99-5.29 5-11.07 9.28-17.35 12.81a85.146 85.146 0 0 1-20.04 8.14 83.637 83.637 0 0 1-21.67 2.83H319.3c-7.46 0-14.73-.94-21.81-2.83-7.08-1.89-13.76-4.6-20.04-8.14a88.292 88.292 0 0 1-17.35-12.81c-5.29-5-9.84-10.67-13.66-16.99-3.82-6.32-6.8-13.19-8.92-20.6-2.12-7.41-3.19-15.27-3.19-23.58v-33.13c0-12.46 2.34-23.88 7.01-34.27 4.67-10.38 10.92-19.33 18.76-26.83 7.83-7.5 16.87-13.36 27.12-17.56 10.24-4.2 20.93-6.3 32.07-6.3h66.41c7.36 0 14.58.94 21.67 2.83 7.08 1.89 13.76 4.6 20.04 8.14a88.292 88.292 0 0 1 17.35 12.81c5.29 5 9.86 10.67 13.74 16.99 3.87 6.33 6.87 13.19 8.99 20.6 2.13 7.41 3.19 15.27 3.19 23.58v33.14zm-37.1-33.13c0-7.27-1.32-13.88-3.96-19.82-2.64-5.95-6.16-11.04-10.55-15.29-4.39-4.25-9.46-7.5-15.22-9.77-5.76-2.27-11.8-3.35-18.13-3.26h-66.41c-6.14-.09-12.11.97-17.91 3.19-5.81 2.22-10.95 5.43-15.44 9.63-4.48 4.2-8.07 9.3-10.76 15.29-2.69 6-4.04 12.67-4.04 20.04v33.13c0 7.36 1.32 14.02 3.96 19.97 2.64 5.95 6.18 11.02 10.62 15.22 4.44 4.2 9.56 7.43 15.36 9.7 5.8 2.27 11.87 3.35 18.2 3.26h66.41c7.27 0 13.85-1.2 19.75-3.61s10.93-5.73 15.08-9.98 7.36-9.32 9.63-15.22c2.27-5.9 3.4-12.34 3.4-19.33v-33.15zm-16-26.91a17.89 17.89 0 0 1 2.83 6.73c.47 2.41.47 4.77 0 7.08-.47 2.31-1.39 4.48-2.76 6.51-1.37 2.03-3.14 3.75-5.31 5.17l-99.4 66.41c-1.61 1.23-3.26 2.08-4.96 2.55-1.7.47-3.45.71-5.24.71-3.02 0-5.9-.71-8.64-2.12-2.74-1.42-4.96-3.44-6.66-6.09a17.89 17.89 0 0 1-2.83-6.73c-.47-2.41-.5-4.77-.07-7.08.43-2.31 1.3-4.48 2.62-6.51 1.32-2.03 3.07-3.75 5.24-5.17l99.69-66.41a17.89 17.89 0 0 1 6.73-2.83c2.41-.47 4.77-.47 7.08 0 2.31.47 4.48 1.37 6.51 2.69 2.03 1.32 3.75 3.02 5.17 5.09z"></path>
                    <path id="id1_1" d="M688.33 232.67h-37.1V149.7H520.39c-2.64 0-5.1-.5-7.36-1.49-2.27-.99-4.23-2.31-5.88-3.96-1.65-1.65-2.95-3.61-3.89-5.88s-1.42-4.67-1.42-7.22V29.62h36.82v82.98h112.57V29.62h37.1v203.05z"></path>
                </g>
            </svg>

            <svg>
                <defs>
                    <filter id="glow">
                        <feGaussianBlur class="blur" result="coloredBlur" stdDeviation="4"></feGaussianBlur>
                        <feMerge>
                            <feMergeNode in="coloredBlur"></feMergeNode>
                            <feMergeNode in="SourceGraphic"></feMergeNode>
                        </feMerge>
                    </filter>
                </defs>
            </svg>

            <h3>错误原因如下：${error}</h3>

            <a class="dwo-home" target="_blank" href="first.jsp">返回首页</a>
            <!-- /.error-page -->
        </section>
        <!-- /.content -->
    </div>
    <!-- 内容区域 /-->




    <!-- 底部导航 -->
    <footer class="main-footer">
        <div class="pull-right hidden-xs">
            <b>Version</b> 1.0.8
        </div>
        <strong>Copyright &copy; 2020 <a href="https://studentliuchang.gitee.io/">中德学院-物联网工程二班-刘畅</a>.</strong> All rights reserved.
    </footer>
    <!-- 底部导航 /-->

</div>


<script src="plugins/jQuery/jquery-2.2.3.min.js"></script>
<script src="plugins/jQueryUI/jquery-ui.min.js"></script>
<script>
    $.widget.bridge('uibutton', $.ui.button);
</script>
<script src="plugins/bootstrap/js/bootstrap.min.js"></script>
<script src="plugins/raphael/raphael-min.js"></script>
<script src="plugins/morris/morris.min.js"></script>
<script src="plugins/sparkline/jquery.sparkline.min.js"></script>
<script src="plugins/jvectormap/jquery-jvectormap-1.2.2.min.js"></script>
<script src="plugins/jvectormap/jquery-jvectormap-world-mill-en.js"></script>
<script src="plugins/knob/jquery.knob.js"></script>
<script src="plugins/daterangepicker/moment.min.js"></script>
<script src="plugins/daterangepicker/daterangepicker.js"></script>
<script src="plugins/daterangepicker/daterangepicker.zh-CN.js"></script>
<script src="plugins/datepicker/bootstrap-datepicker.js"></script>
<script src="plugins/datepicker/locales/bootstrap-datepicker.zh-CN.js"></script>
<script src="plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.all.min.js"></script>
<script src="plugins/slimScroll/jquery.slimscroll.min.js"></script>
<script src="plugins/fastclick/fastclick.js"></script>
<script src="plugins/iCheck/icheck.min.js"></script>
<script src="plugins/adminLTE/js/app.min.js"></script>
<script src="plugins/treeTable/jquery.treetable.js"></script>
<script src="plugins/select2/select2.full.min.js"></script>
<script src="plugins/colorpicker/bootstrap-colorpicker.min.js"></script>
<script src="plugins/bootstrap-wysihtml5/bootstrap-wysihtml5.zh-CN.js"></script>
<script src="plugins/bootstrap-markdown/js/bootstrap-markdown.js"></script>
<script src="plugins/bootstrap-markdown/locale/bootstrap-markdown.zh.js"></script>
<script src="plugins/bootstrap-markdown/js/markdown.js"></script>
<script src="plugins/bootstrap-markdown/js/to-markdown.js"></script>
<script src="plugins/ckeditor/ckeditor.js"></script>
<script src="plugins/input-mask/jquery.inputmask.js"></script>
<script src="plugins/input-mask/jquery.inputmask.date.extensions.js"></script>
<script src="plugins/input-mask/jquery.inputmask.extensions.js"></script>
<script src="plugins/datatables/jquery.dataTables.min.js"></script>
<script src="plugins/datatables/dataTables.bootstrap.min.js"></script>
<script src="plugins/chartjs/Chart.min.js"></script>
<script src="plugins/flot/jquery.flot.min.js"></script>
<script src="plugins/flot/jquery.flot.resize.min.js"></script>
<script src="plugins/flot/jquery.flot.pie.min.js"></script>
<script src="plugins/flot/jquery.flot.categories.min.js"></script>
<script src="plugins/ionslider/ion.rangeSlider.min.js"></script>
<script src="plugins/bootstrap-slider/bootstrap-slider.js"></script>
<script src="plugins/bootstrap-datetimepicker/bootstrap-datetimepicker.js"></script>
<script src="plugins/bootstrap-datetimepicker/locales/bootstrap-datetimepicker.zh-CN.js"></script>
<script>
    $(document).ready(function() {
        // 选择框
        $(".select2").select2();

        // WYSIHTML5编辑器
        $(".textarea").wysihtml5({
            locale: 'zh-CN'
        });
    });


    // 设置激活菜单
    function setSidebarActive(tagUri) {
        var liObj = $("#" + tagUri);
        if (liObj.length > 0) {
            liObj.parent().parent().addClass("active");
            liObj.addClass("active");
        }
    }


    $(document).ready(function() {

        // 激活导航位置
        setSidebarActive("order-manage");

        // 列表按钮
        $("#dataList td input[type='checkbox']").iCheck({
            checkboxClass: 'icheckbox_square-blue',
            increaseArea: '20%'
        });
        // 全选操作
        $("#selall").click(function() {
            var clicks = $(this).is(':checked');
            if (!clicks) {
                $("#dataList td input[type='checkbox']").iCheck("uncheck");
            } else {
                $("#dataList td input[type='checkbox']").iCheck("check");
            }
            $(this).data("clicks", !clicks);
        });
    });
</script>
<script type="text/javascript" src="${pageContext.request.contextPath }/js/studentList.js"></script>
</body>

</html>

<6>：好看的登录页面

1.透明登录界面

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<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">


    <title>Hi~ 欢迎登陆本小站</title>


    <!-- Tell the browser to be responsive to screen width -->
    <meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
    <!-- Bootstrap 3.3.6 -->
    <!-- Font Awesome -->
    <!-- Ionicons -->
    <!-- Theme style -->
    <!-- iCheck -->
    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->

    <link rel="stylesheet" href="plugins/bootstrap/css/bootstrap.min.css">
    <link rel="stylesheet" href="plugins/font-awesome/css/font-awesome.min.css">
    <link rel="stylesheet" href="plugins/ionicons/css/ionicons.min.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/AdminLTE.css">
    <link rel="stylesheet" href="plugins/iCheck/square/blue.css">
    <style>
        body {
            background:url("img/GIF 2020-11-29 10-36-27.gif")  no-repeat center center;   /*加载背景图*/   /* 背景图不平铺 */
            background-size:cover;  /* 让背景图基于容器大小伸缩 */
            background-attachment:fixed;        /* 当内容高度大于图片高度时，背景图像的位置相对于viewport固定 */    //此条属性必须设置否则可能无效/
            background-color:#CCCCCC;   /* 设置背景颜色，背景图加载过程中会显示背景色 */
        }
        .login-box-body{
            position:absolute;
            top:50%;
            left:50%;
            transform:translate(-50%,-50%);
            width:450px;
            padding:50px;
            background: rgba(135,206,235,.1);
            box-sizing:border-box;
            box-shadow: 0px 15px 25px rgba(0,0,0,.5);
            border-radius:15px;
        }
        .login-box-body h2{
            margin:0 0 30px;
            padding:0;
            color: #fff;
            text-align:center;
        }
        .login-box-body .form-group-has-feedback input{
            outline:none;
            background: transparent;
        }
        .login-box-body .form-group-has-feedback input{
            width: 100%;
            padding:10px 0;
            font-size:16px;
            color:#fff;
            letter-spacing: 1px;
            margin-bottom: 30px;
            border:none;
            border-bottom: 1px solid #fff;
            outline:none;
            background: transparent;
        }
    </style>
</head>

<body>
<div class="login-box">
    <div class="login-logo">


        <b><font color="#ff1493">学生</font></b><font color="aqua">后台管理系统</font>


    </div>
    <!-- /.login-logo -->
    <div class="login-box-body">
        <p class="login-box-msg"><font color="#ff7f50" size="5">登录系统</font></p>

        <form action="${pageContext.request.contextPath}/login.do" method="post" onSubmit="return beforeSubmit(this);">
            <div class="info"><font color="black" size="3">欢迎使用该学生管理系统</font></div>
            <div class="info"><font color="red" size="3">${error}</font></div>
            <div class="form-group has-feedback">
                <input type="text" class="form-control" name="userName" placeholder="请输入您的用户名">
                <span class="glyphicon glyphicon-user form-control-feedback"></span>
            </div>
            <div class="form-group has-feedback">
                <input type="password" class="form-control" name="password" placeholder="请输入您的密码">
                <span class="glyphicon glyphicon-lock form-control-feedback"></span>
            </div>
            <div class="row">
                <div class="col-xs-8">
                    <div class="checkbox icheck">
                        <font color="#ff1493" size="3">用户类型:</font>
                        <select name="users">
                            <option value="admin">系统管理员</option>
                            <option value="stu">学生</option>
                            <option value="tea">教师</option>
                        </select>
                    </div>
                </div>
                <!-- /.col -->
                <div class="col-xs-4">
                    <button type="submit" class="btn btn-primary btn-block btn-flat"><font color="black" size="3">登录</font></button>
                </div>
                <!-- /.col -->
            </div>
        </form>
        <!-- /.social-auth-links -->

        <a href="ChangePassword.jsp"><font color="red" size="3">忘记密码</font></a><br>
        <a href="register.jsp" class="text-center"><font color="red" size="3">新用户注册</font></a>

    </div>
    <!-- /.login-box-body -->
</div>
<!-- /.login-box -->

<!-- jQuery 2.2.3 -->
<!-- Bootstrap 3.3.6 -->
<!-- iCheck -->
<script src="plugins/jQuery/jquery-2.2.3.min.js"></script>
<script src="plugins/bootstrap/js/bootstrap.min.js"></script>
<script src="plugins/iCheck/icheck.min.js"></script>
<script>
    $(function() {
        $('input').iCheck({
            checkboxClass: 'icheckbox_square-blue',
            radioClass: 'iradio_square-blue',
            increaseArea: '20%' // optional
        });
    });
</script>
<script type="text/javascript">
    function beforeSubmit(form){
        if(form.userName.value==''){
            alert('用户名不能为空！');
            form.userName.focus();
            return false;
        }
        if(form.password.value==''){
            alert('密码不能为空！');
            form.password.focus();
            return false;
        }
        return true;
    }
</script>
</body>

</html>

修改密码界面

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<%--
  Created by IntelliJ IDEA.
  User: g'g
  Date: 2020/11/23
  Time: 13:00
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">


    <title>
        Hi~ 你在更改密码哦~</title>


    <!-- Tell the browser to be responsive to screen width -->
    <meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
    <!-- Bootstrap 3.3.6 -->
    <!-- Font Awesome -->
    <!-- Ionicons -->
    <!-- Theme style -->
    <!-- iCheck -->
    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->

    <link rel="stylesheet" href="plugins/bootstrap/css/bootstrap.min.css">
    <link rel="stylesheet" href="plugins/font-awesome/css/font-awesome.min.css">
    <link rel="stylesheet" href="plugins/ionicons/css/ionicons.min.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/AdminLTE.css">
    <link rel="stylesheet" href="plugins/iCheck/square/blue.css">
    <style>
        body {
            background:url("img/GIF 2020-11-29 10-36-27.gif")  no-repeat center center;   /*加载背景图*/   /* 背景图不平铺 */
            background-size:cover;  /* 让背景图基于容器大小伸缩 */
            background-attachment:fixed;        /* 当内容高度大于图片高度时，背景图像的位置相对于viewport固定 */    //此条属性必须设置否则可能无效/
        background-color:#CCCCCC;   /* 设置背景颜色，背景图加载过程中会显示背景色 */
        }
        .register-box-body{
            position:absolute;
            top:50%;
            left:50%;
            transform:translate(-50%,-50%);
            width:450px;
            padding:50px;
            background: rgba(135,206,235,.1);
            box-sizing:border-box;
            box-shadow: 0px 15px 25px rgba(0,0,0,.5);
            border-radius:15px;
        }
        .register-box-body h2{
            margin:0 0 30px;
            padding:0;
            color: #fff;
            text-align:center;
        }
        .register-box-body .form-group-has-feedback input{
            outline:none;
            background: transparent;
        }
    </style>

</head>

<body>
<div class="register-box">
    <div class="register-logo">


        <b><font color="#ff1493">学生</font></b><font color="aqua">后台管理系统</font>


    </div>

    <div class="register-box-body">
        <p class="login-box-msg"><font color="#ff7f50" size="3">忘记密码</font></p>
        <div class="info"><font color="red" size="3">${message}${error}</font></div>

        <form action="${pageContext.request.contextPath}/change.do" method="post" onSubmit="return beforeSubmit(this);">
            <div class="form-group has-feedback">
                <input type="text" class="form-control" name="id" placeholder="请输入您的唯一Id">
                <span class="glyphicon glyphicon-user form-control-feedback"></span>
            </div>
            <div class="form-group has-feedback">
                <input type="text" class="form-control" name="userName" placeholder="请输入您的用户名">
                <span class="glyphicon glyphicon-user form-control-feedback"></span>
            </div>
            <div class="form-group has-feedback">
                <input type="password" class="form-control"  name="password1" placeholder="请输入您要修改的密码"><font color="red" size="2">${pass}</font>
                <span class="glyphicon glyphicon-lock form-control-feedback"></span>
            </div>
            <div class="form-group has-feedback">
                <input type="password" class="form-control"  name="password2" placeholder="请再次输入您要修改的密码"><font color="red" size="2">${pass}</font>
                <span class="glyphicon glyphicon-log-in form-control-feedback"></span>
            </div>
            <div class="form-group has-feedback">
                <b><font color="red" size="3">您的任职情况:</font></b>
                <select name="users">
                    <option value="student">学生</option>
                    <option value="teacher">老师</option>
                    <option value="admin">系统管理员</option>
                </select>
            </div>
            <div class="row">
                <div class="col-xs-8">
                    <div class="checkbox icheck">
                        <a href="index.jsp" class="text-center"><b><font color="red" size="3">已修改现在去登录</font></b></a>
                    </div>
                </div>
                <!-- /.col -->
                <div class="col-xs-4">
                    <input type="submit" class="btn btn-primary btn-block btn-flat" value="修改">
                </div>
                <!-- /.col -->
            </div>
        </form>



    </div>
    <!-- /.form-box -->
</div>
<!-- /.register-box -->

<!-- jQuery 2.2.3 -->
<!-- Bootstrap 3.3.6 -->
<!-- iCheck -->
<script src="plugins/jQuery/jquery-2.2.3.min.js"></script>
<script src="plugins/bootstrap/js/bootstrap.min.js"></script>
<script src="plugins/iCheck/icheck.min.js"></script>
<script>
    $(function() {
        $('input').iCheck({
            checkboxClass: 'icheckbox_square-blue',
            radioClass: 'iradio_square-blue',
            increaseArea: '20%' // optional
        });
    });
</script>
<script type="text/javascript">
    function beforeSubmit(form){
        if(form.id.value==''){
            alert('Id不能为空！');
            form.id.focus();
            return false;
        }
        if(form.userName.value==''){
            alert('用户名不能为空！');
            form.userName.focus();
            return false;
        }
        if(form.password1.value==''){
            alert('密码不能为空！');
            form.password.focus();
            return false;
        }
        if(form.password1.value.length<6){
            alert('密码至少为6位，请重新输入！');
            form.password.focus();
            return false;
        }
        if(form.password1.value!=form.password2.value) {
            alert('你两次输入的密码不一致，请重新输入！');
            form.password2.focus();
            return false;
        }
        return true;
    }
</script>
</body>

</html>

注册界面

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<%--
  Created by IntelliJ IDEA.
  User: g'g
  Date: 2020/11/22
  Time: 21:37
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">


    <title>
        Hi~ 你在注册哦~</title>


    <!-- Tell the browser to be responsive to screen width -->
    <meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
    <!-- Bootstrap 3.3.6 -->
    <!-- Font Awesome -->
    <!-- Ionicons -->
    <!-- Theme style -->
    <!-- iCheck -->
    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->

    <link rel="stylesheet" href="plugins/bootstrap/css/bootstrap.min.css">
    <link rel="stylesheet" href="plugins/font-awesome/css/font-awesome.min.css">
    <link rel="stylesheet" href="plugins/ionicons/css/ionicons.min.css">
    <link rel="stylesheet" href="plugins/adminLTE/css/AdminLTE.css">
    <link rel="stylesheet" href="plugins/iCheck/square/blue.css">
    <style>
        body {
            background:url("img/GIF 2020-11-29 10-36-27.gif")  no-repeat center center;   /*加载背景图*/   /* 背景图不平铺 */
            background-size:cover;  /* 让背景图基于容器大小伸缩 */
            background-attachment:fixed;        /* 当内容高度大于图片高度时，背景图像的位置相对于viewport固定 */    //此条属性必须设置否则可能无效/
        background-color:#CCCCCC;   /* 设置背景颜色，背景图加载过程中会显示背景色 */
        }
        .register-box-body{
            position:absolute;
            top:50%;
            left:50%;
            transform:translate(-50%,-50%);
            width:450px;
            padding:50px;
            background: rgba(135,206,235,.1);
            box-sizing:border-box;
            box-shadow: 0px 15px 25px rgba(0,0,0,.5);
            border-radius:15px;
        }
        .register-box-body h2{
            margin:0 0 30px;
            padding:0;
            color: #fff;
            text-align:center;
        }
        .register-box-body .form-group-has-feedback input{
            outline:none;
            background: transparent;
        }
    </style>
</head>

<body>
<div class="register-box">
    <div class="register-logo">


        <b><font color="#ff1493">学生</font></b><font color="aqua">后台管理系统</font>


    </div>

    <div class="register-box-body">
        <p class="login-box-msg"><font color="#ff7f50" size="5">老师信息注册</font></p>

        <form action="${pageContext.request.contextPath}/register.do" method="post" onSubmit="return beforeSubmit(this);">
            <div class="form-group has-feedback">
                <input type="text" class="form-control" name="teacherName" placeholder="姓名">
                <span class="glyphicon glyphicon-user form-control-feedback"></span>
            </div>
            <div class="form-group has-feedback">
                <b><font color="red" size="3">性别:</font></b>
                <input type="radio" name="sex" value="男" checked><font color="aqua" size="3">男</font>
                <input type="radio" name="sex" value="女"><font color="#ff1493" size="3">女</font>
            </div>
            <div class="form-group has-feedback">
                <b><font color="red" size="3">您的任职情况:</font></b>
                <select name="teachers">
                    <option value="professor">教授</option>
                    <option value="counselor">辅导员</option>
                    <option value="Lecturer">讲师</option>
                </select>
            </div>
            <div class="form-group has-feedback">
                <input type="text" class="form-control" name="age" placeholder="年龄">
                <span class="glyphicon glyphicon-adjust form-control-feedback"></span>
            </div>
            <div class="form-group has-feedback">
                <input type="password" class="form-control"  name="password" placeholder="密码">
                <span class="glyphicon glyphicon-log-in form-control-feedback"></span>
            </div>
            <div class="row">
                <div class="col-xs-8">
                    <div class="checkbox icheck">
                        <a href="index.jsp" class="text-center"><b><font color="red" size="3">我有账号，现在就去登录</font></b></a>
                    </div>
                </div>
                <!-- /.col -->
                <div class="col-xs-4">
                    <input type="submit" class="btn btn-primary btn-block btn-flat" value="注册">
                </div>
                <!-- /.col -->
            </div>
        </form>



    </div>
    <!-- /.form-box -->
</div>
<!-- /.register-box -->

<!-- jQuery 2.2.3 -->
<!-- Bootstrap 3.3.6 -->
<!-- iCheck -->
<script src="plugins/jQuery/jquery-2.2.3.min.js"></script>
<script src="plugins/bootstrap/js/bootstrap.min.js"></script>
<script src="plugins/iCheck/icheck.min.js"></script>
<script>
    $(function() {
        $('input').iCheck({
            checkboxClass: 'icheckbox_square-blue',
            radioClass: 'iradio_square-blue',
            increaseArea: '20%' // optional
        });
    });
</script>
<script type="text/javascript">
    function beforeSubmit(form){
        if(form.teacherName.value==''){
            alert('老师姓名不能为空！');
            form.teacherName.focus();
            return false;
        }
        if(form.age.value==''){
            alert('老师的age不能为空！');
            form.age.focus();
            return false;
        }
        if(form.password.value==''){
            alert('密码不能为空！');
            form.password.focus();
            return false;
        }
        if(form.password.value.length<6){
            alert('密码至少为6位，请重新输入！');
            form.password.focus();
            return false;
        }
        return true;
    }
</script>
</body>

</html>

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