1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
2 <html>
3 <head>
4 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
5 <title>Insert title here</title>
6 </head>
7 <body>
8 主页面
9 <%
10 //检查session信息，得到session
11 Object ob=session.getAttribute("username");
12 if(ob!=null)
13 {
14 out.print("欢迎登录"+ob.toString());
15 }
16 else
17 {
18 //5秒后跳转到session2的页面
19 response.setHeader("refresh", "3;URL=session3.jsp");
20 out.print("会话超时，重新登陆");
21 }
22 %>
23 <br>
24 <a href=session3.jsp>退出登录</a>
25 </body>
26 </html>
1 <%@ page language="java" contentType="text/html; charset=UTF-8"
2 pageEncoding="UTF-8"%>
3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4 <html>
5 <head>
6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
7 <title>Insert title here</title>
8 </head>
9 <body>
10 <%
11 //登录验证信息
12 String un=request.getParameter("username");
13 String pw=request.getParameter("password");
//如果登录正确，则跳转到主页面：session1
14 if(un!=null&&pw!=null)
15 {
16 if(un.equals("lhy")&&pw.equals("12345"))
17 {
18 session.setAttribute("username",un);
19 response.sendRedirect("session1.jsp");
20 }
21 else
22 {
23 out.print("输出有误");
24 }
25 }
//如果失败则显示登陆错误
26 else
27 {
28 out.print("登陆错误");
29 }
30 //如果登录正确，跳转到主页面：session1
31
32 //如果失败，显示登录错误
33 %>
34 </body>
35 </html>
1 <%@ page language="java" contentType="text/html; charset=UTF-8"
2 pageEncoding="UTF-8"%>
3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4 <html>
5 <head>
6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
7 <title>Insert title here</title>
8 </head>
9 <body>
10 <%
11 //登录页面
//注销
12 session.invalidate();
13 %>
14 <form action="session2.jsp" method="post">
15 用户名<input type="text" name="username">
16 <br>
17 密码<input type="password" name="password">
18 <br>
19 <input type="submit" value="登录">
20 </form>
21 </body>
22 </html>