Struts2_用DomainModel接收参数

用域模型接收参数

User类

 1 package com.bjsxt.struts2.user.model;
 2 
 3 public class User {
 4     
 5     private String name;
 6     
 7     private int age;
 8 
 9     public String getName() {
10         return name;
11     }
12 
13     public void setName(String name) {
14         this.name = name;
15     }
16 
17     public int getAge() {
18         return age;
19     }
20 
21     public void setAge(int age) {
22         this.age = age;
23     }
24     
25 }
View Code

UserAction

 1 package com.bjsxt.struts2.user.action;
 2 
 3 import com.bjsxt.struts2.user.model.User;
 4 import com.opensymphony.xwork2.ActionSupport;
 5 
 6 public class UserAction extends ActionSupport{
 7 
 8     private static final long serialVersionUID = -2514433281517403937L;
 9     
10     User user;
11     //private UserDTO userDTO;
12     
13     public String add(){
14         System.out.println("name = " + user.getName());
15         System.out.println("age = " + user.getAge());
16         return SUCCESS;
17     }
18 
19     public User getUser() {
20         return user;
21     }
22 
23     public void setUser(User user) {
24         this.user = user;
25     }
26     
27 }
View Code

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>
    <constant name="struts.configuration.xml.reload" value="true"/>
    <constant name="struts.enable.DynamicMethodInvocation" value="true"/>
    
    <package name="user" namespace="/user" extends="struts-default">
        <action name="user" class="com.bjsxt.struts2.user.action.UserAction">
            <result>/user_add_success.jsp</result>
        </action>
    </package>
    
</struts>

index.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <%
 4 String path = request.getContextPath();
 5 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
 6 %>
 7 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 8 <html>
 9 <head>
10 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
11 <title>首页</title>
12 <base href="<%=basePath%>"/>
13 </head>
14 <body>
15 <h1>Hello World~~~</h1>
16 <a href="user/user!add?user.name=xiaoer&user.age=33">添加用户</a>
17 </body>
18 </html>
View Code

结果：

有时候，页面输入的值并非就是单纯的与数据库对应的model，也许会加上其他的东西：验证码，确认密码，标识列...

这时候可以在 model 前又加上一层 dto(Data Transfer Object)，或者叫VO。

我们可以先用dto接收，接收完在方法中处理了相关业务之后，再把dto中与model相关的值复制到model中,dto相当一个中间对象,两者之间的关系如下图。

链接: http://pan.baidu.com/s/1dFf4HXJ 密码: a73w

posted @ 2017-04-06 11:11  流年如水烟雨随风  阅读(814)  评论(0)  编辑  收藏  举报