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 }