struts2对ajax的支持的实例

最新推荐文章于 2025-02-14 14:48:53 发布

于先森啊

最新推荐文章于 2025-02-14 14:48:53 发布

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分类专栏： struts2 文章标签： ajax struts2.0 struts 实例

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要在struts2中使用ajax必须先引入struts2-json-plugin-2.3.28.1.jar包

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.enable.DynamicMethodInvocation" value="true" />
    <constant name="struts.devMode" value="true" />
   <constant name="struts.ognl.allowStaticMethodAccess" value="true"/>
    
    <package name="ajax" extends="json-default">
    	<action name="ajax_*" class="com.zucc.action.AjaxAction" method="{1}">
    		<result name="json" type="json"></result>
    	</action>
    </package>
</struts>

action

package com.zucc.action;

import java.util.ArrayList;
import java.util.List;

import com.opensymphony.xwork2.ActionSupport;
import com.zucc.model.User;

public class AjaxAction extends ActionSupport {

	private int uid;
	
	private User user;
	
	private List<User> users;
	
	public int getUid() {
		return uid;
	}

	public void setUid(int uid) {
		this.uid = uid;
	}

	public User getUser() {
		return user;
	}

	public List<User> getUsers() {
		return users;
	}

	public String loadUser() throws Exception{
		System.out.println("AjaxAction loadUser...");
		System.out.println("uid:" + uid);
		this.user = new User();
		this.user.setUid(uid);
		this.user.setUsername("direct");
		return "json";
	}
	
	public String loadUserList() throws Exception{
		System.out.println("AjaxAction loadUserList...");
		this.users = new ArrayList<User>();
		for(int i=0;i<10;i++){
			User u = new User();
			u.setUid(i+1);
			u.setUsername("well_"+(i+1));
			this.users.add(u);
		}
		return "json";
	}
}

jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="jquery-1.9.1.js"></script> 
<title>Insert title here</title>
<script type="text/javascript">
	function loadUid(){
		var uid = encodeURIComponent($("#uid").val());
		$.post("ajax_loadUser","uid="+uid,function(data){
			alert(data.user.uid + "," + data.user.username);
		})
	}
	
	function loadUserList(){
		var uid = encodeURIComponent($("#uid").val());
		$.post("ajax_loadUserList",null,function(data){
			alert(data.users[1].uid + "," + data.users[1].username);
		})
	}
</script>
</head>
<body>
	<input type="text" name="uid" id="uid">
	<input type="button" value="提交uid" οnclick="javascript:loadUid();">
	
	<input type="button" value="list" οnclick="javascript:loadUserList();">
	
</body>
</html>