一、退出功能流程分析
二、代码
1.view层
1）top.jsp
1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
2 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
3
4
5 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
6 <html>
7 <head>
8 <title>top</title>
9
10 <meta http-equiv="pragma" content="no-cache">
11 <meta http-equiv="cache-control" content="no-cache">
12 <meta http-equiv="expires" content="0">
13 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
14 <meta http-equiv="description" content="This is my page">
15 <meta http-equiv="content-type" content="text/html;charset=utf-8">
16 <!--
17 <link rel="stylesheet" type="text/css" href="styles.css">
18 -->
19 <style type="text/css">
20 body {
21 background: #15B69A;
22 margin: 0px;
23 color: #ffffff;
24 }
25 a {
26 text-transform:none;
27 text-decoration:none;
28 color: #ffffff;
29 font-weight: 900;
30 }
31 a:hover {
32 text-decoration:underline;
33 }
34 </style>
35 </head>
36
37 <body>
38 <h1 style="text-align: center;">传智播客网上书城系统</h1>
39 <div style="font-size: 10pt; line-height: 10px;">
40 <%-- 根据用户是否登录，显示不同的链接 --%>
41 <c:choose>
42 <c:when test="${empty sessionScope.sessionUser }">
43 <a href="<c:url value=‘/jsps/user/login.jsp‘/>" target="_parent">传智会员登录</a> |
44 <a href="<c:url value=‘/jsps/user/regist.jsp‘/>" target="_parent">注册传智会员</a>
45 </c:when>
46 <c:otherwise>
47 传智会员：${sessionScope.sessionUser.loginname } |
48 <a href="<c:url value=‘/jsps/cart/list.jsp‘/>" target="body">我的购物车</a> |
49 <a href="<c:url value=‘/jsps/order/list.jsp‘/>" target="body">我的传智订单</a> |
50 <a href="<c:url value=‘/jsps/user/pwd.jsp‘/>" target="body">修改密码</a> |
51 <a href="<c:url value=‘/UserServlet?method=quit‘/>" target="_parent">退出</a>
52 </c:otherwise>
53 </c:choose>
54
55 </div>
56 </body>
57 </html>
2.servlet层
1）UserServlet.java
1 /**
2 * 退出功能
3 * @param request
4 * @param response
5 * @return
6 */
7 public String quit(HttpServletRequest request, HttpServletResponse response) {
8 request.getSession().invalidate();
9 return "r:/jsps/user/login.jsp";
10 }
时间： 2024-12-21 21:22:58