實現功能：點擊按鈕後傳uer的值到後臺
前後臺URL傳值一共有三種方法，一種用屬性傳，一種傳domainmodel即傳類，還有一種是modeldrivenparam，
我們通常用第一種或者第二種用的多，這裏用第二種爲例：
先寫前臺：
<?xml version="1.0" encoding="GB18030" ?>
<%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
<base href="<%=basePath %>"/>
<title>Insert title here</title>
</head>
<body>
使用Domain Model接收參數<a href="user/user!add?user.name=a&user.age=8">添加用戶</a><br />
使用Domain Model接收參數<a href="user/user!addDetail?userDTO.name=a&userDTO.password=123456&userDTO.confirmingPassword=123456">添加用戶詳細</a>
</body>
</html>structs.xml：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.devMode" value="true" />
<package name="user" extends="struts-default" namespace="/user">
<action name="user" class="com.bjsxt.struts2.user.action.UserAction">
<result>/user_add_success.jsp</result>
</action>
</package>
</struts>user.java：
package com.bjsxt.struts2.user.model;
public class User {
private String name;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
userDTO.java：
package com.bjsxt.struts2.user.dto;
public class UserDTO {
private String name;
private String password;
private String confirmingPassword;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getConfirmingPassword() {
return confirmingPassword;
}
public void setConfirmingPassword(String confirmingPassword) {
this.confirmingPassword = confirmingPassword;
}
}
Action類：
structs想要接受前臺數據url的數據很簡單，直接建一個bean,然後直接用bean.屬性取值，例如我前臺url是user.name=a，後臺想取值，直接是user.getName就能得到數據了
注意，這裏的name不一定要前後臺保持一致，他是通過getName這個方法獲取參數的，如果後臺想用XXX這個名字，請把構造函數改成
public void setXXX(String name) {
this.XXX = name;
}
不過如果你沒有特殊需求，一般還是保持一致比較好。
package com.bjsxt.struts2.user.action;
import com.bjsxt.struts2.user.dto.UserDTO;
import com.bjsxt.struts2.user.model.User;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction extends ActionSupport {
private User user;
//DTO:數據傳輸對象
//正常user裏放用戶名密碼，而我想要確認密碼這個屬性，放user表又不合適，所以就九遊了userDto這個類，專門存傳輸數據中所需要用到的屬性，其本質就是一個叫userDTO的model,專門接受下數據，然後傳遞下
private UserDTO userDTO;
public String add() {
System.out.println("name=" + user.getName());
System.out.println("age=" + user.getAge());
return SUCCESS;
}
public String addDetail() {
System.out.println("userDTO.Name=" + userDTO.getName());
System.out.println("userDTO.Password=" + userDTO.getPassword());
System.out.println("userDTO.userConfirmingPassword=" + userDTO.getConfirmingPassword());
return SUCCESS;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public UserDTO getUserDTO() {
return userDTO;
}
public void setUserDTO(UserDTO userDTO) {
this.userDTO = userDTO;
}
}
項目結構如圖：
