Flex HTTPService 获取数据网络xml资源

<?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"
			    creationComplete="breakfast.send()">
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
		<mx:HTTPService id="breakfast" url="http://www.w3school.com.cn/example/xmle/simple.xml" result="breakfast_resultHandler(event)"/>
	</fx:Declarations>
	<fx:Script>
		<![CDATA[
			import mx.collections.ArrayCollection;
			import mx.rpc.events.ResultEvent;
			
			[Bindable]
			public var food:ArrayCollection=new ArrayCollection();

			protected function breakfast_resultHandler(event:ResultEvent):void
			{
				// TODO Auto-generated method stub
				food = event.result.breakfast_menu.food as ArrayCollection;
			}

		]]>
	</fx:Script>
	<mx:DataGrid x="19" y="10" dataProvider="{food}" height="300" variableRowHeight="true" textAlign="center">
		<mx:columns>
			<mx:DataGridColumn headerText="Food name" dataField="name" width="150" />
			<mx:DataGridColumn headerText="Price" dataField="price" width="50" />
			<mx:DataGridColumn headerText="Description" dataField="description" width="250"  wordWrap="true"/>
			<mx:DataGridColumn headerText="Calories" dataField="calories" width="50" />
			
		</mx:columns>
	</mx:DataGrid>
	<s:ComboBox x="145" y="427" dataProvider="{food}" labelField="name"/>
	
	</s:Application>