FLEX4中 获取JSON数据的一个例子

公司要求使用JSON格式来获取服务器端的数据

 

通过谷歌大神帮助 成功解决了问题

 

无奈服务器端返回的JSON格式两边都有括号 

费劲了几番周折 才搞定 不敢独享 发出来大家一起玩玩

 

import com.adobe.lib.JSON;
这个包是在官网上下的源代码 然后封包 包名称是自己起的

 

1. 首先使用HTTPService 对象获取数据

2. 然后使用JSON来解析获取的数据

3. 最后使用ArrayCollection 绑定到DataGrid上

 

发现数据有乱码 在Application 中加入属性   initialize="flash.system.System.useCodePage=true"

 

 

数据格式如下 带有括号 在程序中进行了简单的过滤

({"id":"1","totalCount":"1","results": [{"timeEarlyWarning":"","linkTel":"138900900","dispatchSources":"group","no":"电路- 21111111- 009","statusStr":"","appUserInfo":"","checkTime":"","serviceModeDetail":"0132" ,"drafPerson":"黄xx","appManager":"","specialtyCheckerId":"","alterMan":"","actualFeedBackTime" :"","toDeps":"省分公 司","dispatchGroupId":"","appBusinessDep":"","circuitNum":"","signTime":"","di spatchZOBId":"","signOpinion":"","appTime":"","dealStatus":"new","clientEmail" :"","createTime":"2011-03-01 11:49","serviceModeDetailStr":"国内DDN电 路","locationId":"2","circuitAppType":"client"}]})

 

 程序代码如下

 

<?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" initialize="flash.system.System.useCodePage=true" creationComplete="application1_creationCompleteHandler(event)" > <s:layout> <s:BasicLayout/> </s:layout> <fx:Script> <!--[CDATA[ import com.adobe.lib.JSON; import mx.collections.ArrayCollection; import mx.events.FlexEvent; import mx.rpc.events.FaultEvent; import mx.rpc.events.ResultEvent; [Bindable] private var arrColl:ArrayCollection; protected function application1_creationCompleteHandler(event:FlexEvent):void { // TODO Auto-generated method stub requestSend(); } private function requestSend():void { var username:String = "shili"; var sessionId:String = "EA123SF7S98DF9GDS7SDF99DSF"; http_service.addEventListener(ResultEvent.RESULT,http_service_resultHandler); http_service.addEventListener(FaultEvent.FAULT,http_service_faultHandler); http_service.url="/fault/loadFaultReminders.html?_dc="+ Math.random() +"&username="+ username +";jsessionid="+ sessionId; http_service.send(null); } protected function http_service_resultHandler(event:ResultEvent):void { var jsonStr:String=event.result as String; jsonStr = jsonStr.replace("(",""); jsonStr = jsonStr.replace(")",""); var jsonObj:Object = JSON.decode(jsonStr); if(jsonObj!=null&&jsonObj.totalCount>0) { var results_array:Array = jsonObj.results as Array; arrColl = new ArrayCollection(results_array); } } protected function http_service_faultHandler(event:FaultEvent):void { trace("访问服务器失败"); } ]]--> </fx:Script> <fx:Declarations> <!-- 将非可视元素（例如服务、值对象）放在此处 --> <s:HTTPService id="http_service" url="" method="GET"></s:HTTPService> </fx:Declarations> <mx:DataGrid x="19" y="10" dataProvider="{arrColl}" width="761" height="159"> </mx:DataGrid> </s:Application>