Flex2 Tree从XML文件中加载数据

<? xml version="1.0" encoding="utf-8" ?>
< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"  
    fontFamily ="simsun"  fontSize ="12"  
    layout ="absolute"  creationComplete ="menu.send();"  width ="242"  height ="442" >
< mx:Script >
     <![CDATA[
        import mx.collections.ArrayCollection;
        import mx.rpc.events.ResultEvent;
        [Bindable]
        private var menus:XML;
        private function LoadMenu(event:ResultEvent):void{
            menus = XML(event.result);
            var results:XMLList = menus.node;
            tree.dataProvider = results;
        }
     ]]>
</ mx:Script >
     < mx:HTTPService  url ="TreeMenus.xml"  id ="menu"  useProxy ="false"  
        showBusyCursor ="true"  result ="LoadMenu(event)"  resultFormat ="xml" />

     < mx:Tree  id ="tree"  x ="10"  y ="35"  width ="218"  height ="397"  labelField ="@label"   />
     < mx:Label  x ="10"  y ="10"  text ="Tree Nodes From XML File" />
</ mx:Application >

xml文件

<? xml version="1.0" encoding="utf-8" ?>
< menus >
     < node  label ="Mail" >
         < node  label ="Inbox" />
         < node  label ="Personal Folder" >
             < node  label ="Demo" />
             < node  label ="Personal" />
             < node  label ="Saved Mail" />
             < node  label ="bar" />
         </ node >
         < node  label ="Calendar" />
         < node  label ="Sent" />
         < node  label ="Trash" />
     </ node >
</ menus >