使用bean标签定义变量

来源：互联网发布：windows luajit 安装编辑：程序博客网时间：2024/05/01 14:44

从已有的变量或变量的属性定义一个新的变量

1.查找

从scope=" "找，到name=" "，property=" "找

2.定义（赋值）

定义一个新的变量名id=" "

3.保存

保存到toScope=" "

<%@ page language="java" import="demo.User" pageEncoding="UTF-8"%><%@taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %><%String username = "xiaoha";request.setAttribute("username", username);User user =new User();user.setUsername("babala");request.setAttribute("user", user);%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>        <title>My JSP 'BeanTldTest.jsp' starting page</title>      </head>    <body>  <!--把变量username的值赋给 username1 -->    <bean:define id="username1" name="username"></bean:define>    username1:<bean:write name="username1"/>    <br />    <bean:define id="username2" scope="request" name="user"    property="username" toScope="application"></bean:define>    username2:${applicationScope.username2 }  </body>  </html>

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