jsp练习1

登录页

 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 <form name="form1",acion="lianxi2.jsp">
11 
12 
13 用户名：
14 <input name="user" type="text" width="30"/><br>
15 
16 密     码：
17 <input name="mima" type="password" width="30"/><br>
18 
19 <input name="denglu" type="submit" value="登录"/>
20 
21 
22 </form>
23 
24 </body>
25 </html>
View Code

处理页

 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 
12 //设置用户名为abc，密码为123
13 String s1 = new String(request.getParameter("user"));
14 
15 String s2 = new String(request.getParameter("mima"));
16 
17 if(s1 != "abc" || s2 != "123")
18 {
19 out.print("登录失败");
20 }
21 
22 response.sendRedirect("lianxi3.jsp");
23 %>
24 </body>
25 </html>
View Code

错误提示页

 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 用户名或密码错误！
11 <%
12 
13 response.setHeader("refresh", "30;URL=lianxi1.jsp");
14 
15 %>
16 
17 </body>
18 </html>
View Code

 

posted @ 2015-11-24 22:54  宗学唯zi  阅读(233)  评论(0)    收藏  举报