PageHelper实现简单的分页功能——实习日志7.16

SSM框架-分页、新建、修改

今天也就是在之前工作的基础上，完成分页，用户增加、用户修改等操作。

分页

就是在use-list页面上，将用户列表能够转页保存，效果如下：


代码如下：Controller.java

 public ModelAndView findAll(@RequestParam (defaultValue = "1") int page,@RequestParam(defaultValue = "5") int size) {
        List<Userinfo> userinfos = userinfoService.findAll(page,size);
        ModelAndView mv = new ModelAndView();
        PageInfo pageInfo=new PageInfo(userinfos);
        mv.addObject("pageInfo", pageInfo);
        mv.setViewName("user-list");
        return mv;

    }

Dao层和Service层变化不大，只是输入参数改了一下，这里就不列出了。
但注意的是，这里使用的PageInfo这个类，需要导入jar包，所以首先应该是配置环境。
pom.xml

 <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>5.1.2</version>
    </dependency>

applicationContext.xml

//配置在SqlSessionFactory下
     <property name="plugins">
            <array>
                <bean class="com.github.pagehelper.PageInterceptor">
                    <property name="properties">
                        <props>
                            <prop key="helperDialect">mysql</prop>
                            <prop key="reasonable">true</prop>
                        </props>
                    </property>
                </bean>
            </array>
        </property>

user-list.jap

<div class="box-tools pull-right">
                            <ul class="pagination">
                                <li><a href="${pageContext.request.contextPath}/user/findAll.do?page=1&size=5" aria-label="Previous">首页     </a></li>
                                <li><a href="${pageContext.request.contextPath}/user/findAll.do?page=${pageInfo.pageNum-1}&size=5">上一页</a></li>
                                <c:forEach begin="1" end="${pageInfo.pages}" var="pageNum">
                                    <li><a href="${pageContext.request.contextPath}/user/findAll.do?page=${pageNum}&size=5">${pageNum}</a></li>
                                </c:forEach>
                                <li><a href="${pageContext.request.contextPath}/user/findAll.do?page=${pageInfo.pageNum+1}&size=5">下一页</a></li>
                                <li><a href="${pageContext.request.contextPath}/user/findAll.do?page=${pageInfo.pages}&size=5" aria-label="Next">尾页</a></li>
                            </ul>

                        </div>

新增

Controller层.java

    @RequestMapping("add.do")
    public String add(Userinfo userinfo){
    userinfoService.add(userinfo);
    return "redirect:findAll.do";
    }

user-add.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" isELIgnored="false"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<!-- 页面meta -->
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>数据 - AdminLTE2定制版</title>
<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">


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

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

    <div class="wrapper">

        <!-- 页面头部 -->
        <jsp:include page="header.jsp"></jsp:include>
        <!-- 页面头部 /-->
        <!-- 导航侧栏 -->
        <jsp:include page="aside.jsp"></jsp:include>
        <!-- 导航侧栏 /-->

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

            <!-- 内容头部 -->
            <section class="content-header">
            <h1>
                用户管理 <small>用户表单</small>
            </h1>
            <ol class="breadcrumb">
                <li><a href="#"><i
                        class="fa fa-dashboard"></i> 首页</a></li>
                <li><a
                    href="${pageContext.request.contextPath}/user/add.do">用户管理</a></li>
                <li class="active">用户表单</li>
            </ol>
            </section>
            <!-- 内容头部 /-->

            <form action="${pageContext.request.contextPath}/user/add.do"
                method="post">
                <!-- 正文区域 -->
                <section class="content"> <!--产品信息-->

                <div class="panel panel-default">
                    <div class="panel-heading">用户信息</div>
                    <div class="row data-type">



                        <div class="col-md-2 title">用户名称</div>
                        <div class="col-md-4 data">
                            <input type="text" class="form-control" name="name"
                                placeholder="用户名称" value="">
                        </div>
                        <div class="col-md-2 title">密码</div>
                        <div class="col-md-4 data">
                            <input type="password" class="form-control" name="password"
                                placeholder="密码" value="">
                        </div>


                    </div>
                </div>
                <!--订单信息/--> <!--工具栏-->
                <div class="box-tools text-center">
                    <button type="submit" class="btn bg-maroon">保存</button>
                    <button type="button" class="btn bg-default"
                        onclick="history.back(-1);">返回</button>
                </div>
                <!--工具栏/--> </section>
                <!-- 正文区域 /-->
            </form>
        </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; 2014-2017 <a
            href="http://www.itcast.cn">研究院研发部</a>.
        </strong> All rights reserved. </footer>
        <!-- 底部导航 /-->

    </div>


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


</body>

</html>

更新

这里是通过id来查找到对应的数据单元，然后进行修改，这里就算改id也是无效的。
Controller.java

 @RequestMapping("toUpdate.do")
    public ModelAndView toUpdate(int id){
        Userinfo userinfo=userinfoService.selectById(id);
        ModelAndView mv=new ModelAndView();
        mv.addObject("userInfo",userinfo);
        mv.setViewName("user-update");
        return mv;
    }
    @RequestMapping("update.do")
    public String update(Userinfo userinfo){
        userinfoService.update(userinfo);
        return"redirect:findAll.do";
    }

user-update

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" isELIgnored="false"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<!-- 页面meta -->
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>数据 - AdminLTE2定制版</title>
<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">


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

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

    <div class="wrapper">

        <!-- 页面头部 -->
        <jsp:include page="header.jsp"></jsp:include>
        <!-- 页面头部 /-->
        <!-- 导航侧栏 -->
        <jsp:include page="aside.jsp"></jsp:include>
        <!-- 导航侧栏 /-->

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

            <!-- 内容头部 -->
            <section class="content-header">
            <h1>
                用户管理 <small>用户表单</small>
            </h1>
            <ol class="breadcrumb">
                <li><a href="#"><i
                        class="fa fa-dashboard"></i> 首页</a></li>
                <li><a
                    href="#">用户管理</a></li>
                <li class="active">用户表单</li>
            </ol>
            </section>
            <!-- 内容头部 /-->

            <form action="${pageContext.request.contextPath}/user/update.do"
                method="post">
                <!-- 正文区域 -->
                <section class="content"> <!--产品信息-->

                <div class="panel panel-default">
                    <div class="panel-heading">用户信息</div>
                    <div class="row data-type">
                        <div class="col-md-2 title">id</div>
                        <div class="col-md-4 data">
                            <input type="text" class="form-control" name="id"
                                   placeholder="id" value="${userInfo.id}">
                        </div>

                        <div class="col-md-2 title">用户名称</div>
                        <div class="col-md-4 data">
                            <input type="text" class="form-control" name="name"
                                placeholder="用户名称" value="${userInfo.name}">
                        </div>
                        <div class="col-md-2 title">密码</div>
                        <div class="col-md-4 data">
                            <input type="password" class="form-control" name="password"
                                placeholder="密码" value="${userInfo.password}">
                        </div>


                    </div>
                </div>
                <!--订单信息/--> <!--工具栏-->
                <div class="box-tools text-center">
                    <button type="submit" class="btn bg-maroon">保存</button>
                    <button type="button" class="btn bg-default"
                        onclick="history.back(-1);">返回</button>
                </div>
                <!--工具栏/--> </section>
                <!-- 正文区域 /-->
            </form>
        </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; 2014-2017 <a
            href="http://www.itcast.cn">研究院研发部</a>.
        </strong> All rights reserved. </footer>
        <!-- 底部导航 /-->

    </div>


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


</body>

</html>
user-update.jsp

总结：

● JSP是Servlet技术的扩展，本质上就是Servlet的简易方式。JSP编译后是“类servlet”。

● Servlet和JSP最主要的不同点在于：Servlet的应用逻辑是在Java文件中，并且完全从表示层中的HTML里分离开来。而JSP的情况是Java和HTML可以组合成一个扩展名为.jsp的文件。

● JSP侧重于视图，Servlet主要用于控制逻辑。

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原文地址：https://www.cnblogs.com/developing/p/11197076.html