-------------------siwuxie095
从值栈获取对象
1、具体步骤
(1)在
Action 中向值栈放对象
(2)在
JSP 页面中从值栈获取对象
2、具体实现
(1)编写实体类
User.java:
package com.siwuxie095.entity; // User 实体类 public class User { private String username; private String password; private String address; public String getUsername() { return username; } public this.username = username; } public String getPassword() { return password; } public this.password = password; } public String getAddress() { return address; } public this.address = address; } @Override public String toString() { return + ", address=" + address + "]"; } } |
(2)编写
Action
ObjectAction.java:
package com.siwuxie095.action; import com.opensymphony.xwork2.ActionSupport; import com.siwuxie095.entity.User; public class ObjectAction extends ActionSupport { /* * (1) 在 Action 中定义实体类对象 * * 因为总归是要 new 的,所以就在这 * 里创建,而不是声明了 */ private User user=new User(); /* * (2) 提供实体类对象的 get 方法即可 */ public User getUser() { return user; } @Override public String execute() throws Exception { /* * 如果上面仅仅是声明了实体类对象, * 那么就要在这里创建,即 new 出来 */ /* * (3) 在执行的方法中,向实体类对象中设置值 */ user.setUsername("siwuxie095"); user.setPassword("8888"); user.setAddress("China"); return SUCCESS; } } |
(3)配置
Action
struts.xml:
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <package <action <result </action> </package> </struts> |
(4)编写页面
object.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!-- 引入 Struts2 标签库 --> <%@ taglib uri="/struts-tags" prefix="s"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" <html> <head> <meta <title>Object</title> </head> <body> <!-- 获取值栈中实体类对象的值 --> <s:property <s:property <s:property </body> </html> |
(5)访问路径
http://localhost:8080/工程名/object.action
【made by siwuxie095】