由于一直用json开发，对json比较熟悉了，所以学习flex以后一直想做一个flex与json的开发，网上海一样的资源一直没找到合适的，今天偶然间搜到一篇文章才知道flex早就支持json解析。这里提供资源下载网站?
http://code.google.com/p/as3corelib/downloads/list
。顺便将例子上传上来希望对大家学习有帮助。?
举例如下：?
步骤1：到上面的链接中下载swc文件到lib包下?
步骤2：在webRoot下新建文件夹flexds，其下新建文件json.jsp?
- json.jsp内容如下：??
- ??
- <jsp:root?xmlns:jsp="http://java.sun.com/JSP/Page"?version="1.2">???
- <jsp:directive.page?import="java.text.*"/>??
- import="java.lang.*"/>??
- <jsp:directive.page?contentType="text/json"/>??
- ????[<jsp:scriptlet>??
- ????????<![CDATA[??
- ????????????double?compa?=?1000.0;??
- double?compb?=?900.0;??
- for?(int?i?=?0;?i<=30;?i++)?{??
- ????????????compa?+=?(?Math.random()?*?100?)?-?50;??
- ????????????compb?+=?(?Math.random()?*?if?(?i?>?0?)?out.print(?","?);??
- ????????????]]>?</jsp:scriptlet>??
- ????????????{"compa":<jsp:expression>compa</jsp:expression>,??
- ????????????"compb":<jsp:expression>compb</jsp:expression>}<jsp:scriptlet>??
- ????????????<![CDATA[?}??
- ????????]]>??
- ????</jsp:scriptlet>??
- ]??
- </jsp:root>??
步骤3：下面做测试文件flexSrc下新建jsondg.mxml文件，内容如下：??
<?xml?version="1.0"?encoding="utf-8"?>??
<mx:Application?xmlns:mx="http://www.adobe.com/2006/mxml"??
????????????????layout="vertical"??
????????????????creationComplete="jsonservice.send()">??
????<mx:Script>??
import?mx.rpc.events.ResultEvent;??
import?com.adobe.serialization.json.JSONDecoder;??
import?mx.controls.Alert;??
private?function?onJSONResult(event:ResultEvent):void??
????????????{??
????????????????var?data:String=event.result.toString();??
??????????????????
????????????????data=data.replace(/s/g,?'');??
????????????????var?jd:JSONDecoder=new?JSONDecoder(data);??
????????????????dg.dataProvider=jd.getValue();??
????????????}??
????</mx:Script>??
????<mx:HTTPService?id="jsonservice"??
????????????????????url="http://localhost:8080/felxDOC/flexds/json.jsp"??
????????????????????resultFormat="text"??
????????????????????result="onJSONResult(event)"/>??
????<mx:Panel?title="Stock?Data?"??
??????????????width="100%?"??
??????????????height="100%?">??
????????<mx:DataGrid?id="dg"??
?????????????????????width="100%"??
?????????????????????height="100%">??
????????????<mx:columns>??
????????????????<mx:DataGridColumn?dataField="compa"/>??
????????????????<mx:DataGridColumn?dataField="compb"/>??
????????????</mx:columns>??
????????</mx:DataGrid>??
????</mx:Panel>??
</mx:Application> ?
