jsp javabean开发模式

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1.jsp+javabean开发模式

这是一个用jsp作为网页的输出技术，将javabean里封装的属性公开。

2.过程

1).先写javabean里的属性及它的get和set。

package aa;
public class javabean_admin {
   private int id;
   private String username;
   private int password;

   public int getId() {
       return id;
   }
   public void setId(int id) {
       this.id = id;
   }
   public String getUsername() {
       return username;
   }
   public void setUsername(String username) {
       this.username = username;
   }
   public int getPassword() {
       return password;
   }
   public void setPassword(int password) {
       this.password = password;
   }

2).继续写上index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

    <base href="<%=basePath%>">
    <title>慢慢来</title>
   <meta http-equiv="pragma" content="no-cache">
   <meta http-equiv="cache-control" content="no-cache">
   <meta http-equiv="expires" content="0">
   <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
   <meta http-equiv="description" content="This is my page">
</head>

<body>
           <jsp:useBean id="aa" class="aa.javabean_admin" /><%--id代表包名--%>
           <jsp:setProperty name="aa" property="id" value="1"/>
           <jsp:setProperty name="aa" property="username" value="jack" />
           <jsp:setProperty name="aa" property="password" value="88337248"/>

           <jsp:getProperty name="aa" property="id" />
                   <br>
           <jsp:getProperty name="aa" property="username" />
                   <br>
           <jsp:getProperty name="aa" property="password" />


</body>
</html>

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