application和javaBean练习

Posted 2020-08-01 唐枫

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编写一个jsp程序，实现将用户信息保存在application对象的用户注册

 1 package com.sp.test;
 2 
 3 public class User {
 4 
 5     private String usename;
 6     private String password;
 7     
 8     public String getUsename() {
 9         return usename;
10     }
11     public void setUsename(String usename) {
12         this.usename = usename;
13     }
14     public String getPassword() {
15         return password;
16     }
17     public void setPassword(String password) {
18         this.password = password;
19     }
20     public User(String usename, String password) {
21         super();
22         this.usename = usename;
23         this.password = password;
24     }
25     
26     
27 }

 1 <%@page import="com.sp.test.User"%>
 2 <%@ page language="java" contentType="text/html; charset=UTF-8"
 3     pageEncoding="UTF-8"%>
 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 5 <html>
 6 <head>
 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 8 <title>用户的注册信息</title>
 9 </head>
10 <body>
11 <%
12 Object obj = application.getAttribute("use");
13 if(obj == null){
14     User u = new User("张三","123");
15     application.setAttribute("use", u);
16     obj = u;    
17 }
18 User us = (User)obj;
19 //输出用户信息
20 out.println("用户名：" + us.getUsename() + "<br>密码：" + us.getPassword());
21 %>
22 </body>
23 </html>

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