首先看下面useBean结构分析
说明，权限路径即包名加类名。本处不详细解读jsp作用域，相关知识请移步学习。
依据上图，依次进行本次演示
1.建立如下javaBean类，首先创建一个User类
package cn.cowhair;
public class User {
private String username;
private String password;
public User() {
super();
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8" contentType="text/html; charset=utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<jsp:useBean id="user" class="cn.cowhair.User" scope="page"></jsp:useBean>
<%
user.setUsername("張三");
out.print(user.getUsername());
%>
</body>
</html>
