`

struts2.1.8中jsonplugin用法

jsonStrutsAjaxJavaScriptfreemarker 
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正在研究，可是对json不是很熟，所以先研究哈。

导入所需jar包：

commons-fileupload-1.2.1.jar

commons-io-1.3.2.jar

freemarker-2.3.15.jar

json-lib-2.1.jar

ognl-2.7.3.jar

struts2-core-2.1.8.1.jar

struts2-json-plugin-2.1.8.1.jar

xwork-core-2.1.6.jar

JsonAction类：

package org.foerver.action;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.foerver.entity.Goods;

import com.opensymphony.xwork2.ActionSupport;

public class JsonAction extends ActionSupport {

	private static final long serialVersionUID = 2601714969474548417L;
	private Goods goods = new Goods();
	private String message = "默认消息";
	private List list = new ArrayList();
	private Map<String, Object> hashMap = new HashMap<String, Object>();

	public String queryList() throws Exception {
		System.out.println("queryList()");
		for (int i = 0; i < 4; i++) {
			Goods item = new Goods();
			item.setName("橘子");
			item.setStand("每箱33个");
			item.setMoney(99);
			item.setLeavings(43);
			item.setOrders(3 + i);
			list.add(item);
		}
		return "queryList";
	}

	public String queryMap() {
		System.out.println("queryMap()");
		hashMap.put("username", "admin");
		hashMap.put("password", "forever");
		Goods item = new Goods();
		item.setName("橘子");
		item.setStand("每箱27个");
		item.setMoney(99);
		item.setLeavings(43);
		item.setOrders(3);
		hashMap.put("item", item);
		return "queryMap";
	}

	public String message() {
		System.out.println("message()");
		message = "返回普通的字符串内容";

		return "message";
	}

	public String query() {
		System.out.println("query()");
		goods.setName("橘子");
		goods.setStand("每箱27个");
		goods.setMoney(99);
		goods.setLeavings(43);
		goods.setOrders(3);
		return "query";
	}

	public String getMessage() {

		return message;
	}

	public void setMessage(String message) {
		this.message = message;
	}

	public Goods getGoods() {
		return goods;
	}

	public void setGoods(Goods goods) {
		this.goods = goods;
	}

	public List getList() {
		return list;
	}

	public void setList(List list) {
		this.list = list;
	}

	public Map<String, Object> getHashMap() {
		return hashMap;
	}

	public void setHashMap(Map<String, Object> hashMap) {
		this.hashMap = hashMap;
	}

	
	

}

 Goods类：

package org.foerver.entity;

import java.io.Serializable;

//商品描述
/**
 * @author Administrator
 *
 */
public class Goods implements Serializable{

	private static final long serialVersionUID = -3430492488228556256L;
	public int id;//编号
	public String name;//名字
	public String stand;//标准
	public int money;//价格
	public int leavings;//库存
	public int orders;//已订购数量
	
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getStand() {
		return stand;
	}
	public void setStand(String stand) {
		this.stand = stand;
	}
	public int getMoney() {
		return money;
	}
	public void setMoney(int money) {
		this.money = money;
	}
	public int getLeavings() {
		return leavings;
	}
	public void setLeavings(int leavings) {
		this.leavings = leavings;
	}
	public int getOrders() {
		return orders;
	}
	public void setOrders(int orders) {
		this.orders = orders;
	}
	
}

 struts.xml配置：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
	<!-- 指定struts配置文件修改后是否自动重新加载文件 -->
	<constant name="struts.configuration.xml.reload" value="true"></constant>
	
	<package name="json" namespace="/json" extends="json-default">
		<action name="json_*" class="org.foerver.action.JsonAction" method="{1}">
			<result type="json" name="{1}"/>
		</action>
		<action name="json_view">
			<result>/json.jsp</result>
		</action>
	</package>
</struts>

 

 

 json.jsp页面：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">


<html>
  <head>
    <title>json的使用</title>
    <s:url id="query_message_url" action="json_message"/>
    <s:url id="query_url" action="json_query"/>
    <s:url id="query_list_url" action="json_queryList"/>
    <s:url id="query_map_url" action="json_queryMap"/>
     <script type="text/javascript" src="${pageContext.request.contextPath}/jquery1.3.2.js"></script>
    <script type="text/javascript">
    	$(function(){
    		$("#btnQueryMsg").bind("click",function(){
    			$.ajax({
    				url:"<s:property value='query_message_url' />",
    				type:"POST",
    				dataType:"json",
    				success:function(data){
    					//循环json对象的所有键值对
    					$("#jsonData").empty();
    					$.each(data,function(key,value){
    						$("#jsonData").append("key="+key+":value="+value+"<br/>");
    					});
    				}
    			});
    		});
    		$("#btnQuery").bind("click",function(){
    			$.ajax({
    				url:"<s:property value='query_url' />",
    				type:"POST",
    				dataType:"json",
    				success:function(data){
    					//循环json对象的所有键值对
    					$("#jsonData").empty();
    					$.each(data.goods,function(key,value){
    						$("#jsonData").append("key="+key+":value="+value+"<br/>");
    					});
    				}
    			});
    		});
    		
    		$("#btnQueryList").bind("click",function(){
    			$.getJSON(
    				"<s:property value='query_list_url' />",
    				function(data){
    					//循环json对象的所有键值对
    					$("#jsonData").empty();
    					$.each(data.list,function(key,value){
    						$("#jsonData").append("key="+key+"<br/>");
    						$.each(value,function(k,v){
    							$("#jsonData").append("key="+k+":value="+v+"<br/>");
    						});	
    						$("#jsonData").append("************<br/>");
    						
    					});
    				}
    			);
    		});
    		
    		$("#btnQueryMap").bind("click",function(){
    			$.ajax({
    				url:"<s:property value='query_map_url' />",
    				type:"POST",
    				dataType:"json",
    				success:function(data){
    					//循环json对象的所有键值对
    					$("#jsonData").empty();
    					$.each(data.hashMap,function(key,value){
    						$("#jsonData").append("key="+key+":value="+value+"<br/>");
    					});
    				}
    			});
    		});
    		
    	});
    	
    </script>
 </head>
  
  <body>
  	返回的json格式：<div id="jsonData"></div><br/>
  	<input type="button" value="返回普通消息" id="btnQueryMsg"/><br/>
  	<input type="button" value="返回单个对象" id="btnQuery"/><br/>
  	<input type="button" value="返回list对象" id="btnQueryList"/><br/>
  	<input type="button" value="返回map对象" id="btnQueryMap"/><br/>
  	<s:debug></s:debug>
  	
  </body>
</html>

 

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