Flex与java简单的交互

没接触过flex，忽然有项目需要，简单的看了一下！

flex通过HTTPService与后台java交互数据

前台flex代码

<?xml version="1.0" encoding="utf-8"?>

<mx:Application 
	xmlns:mx="http://www.adobe.com/2006/mxml" 
	viewSourceURL=""
	horizontalAlign="center" verticalAlign="middle" 
	width="100%" height="100%"
	>
	<mx:Script>
		<![CDATA[
			import mx.rpc.events.FaultEvent;
			import mx.rpc.events.ResultEvent;
			import mx.controls.Alert;
			
			private function outputFormat(
				uInfo:XML,elemName:String
			):String
			{
				var retVal:String
				= "{"
					+ uInfo.elements(elemName)[0].toString()
					+ "}";
				return retVal;
			}
			
			private function handleResultEvt(
				evt:ResultEvent
			):void
			{
				var usrInfo:XML
				= evt.result as XML;
				fName.text
					= outputFormat(usrInfo,"first_name");
				lName.text
					= outputFormat(usrInfo,"last_name");
				age.text
					= outputFormat(usrInfo,"age");
				addr1.text
					= outputFormat(usrInfo,"address_1");
				addr2.text
					= outputFormat(usrInfo,"address_2");
				city.text
					= outputFormat(usrInfo,"city");
				state.text
					= outputFormat(usrInfo,"state");
				zip.text
					= outputFormat(usrInfo,"zip");
			}
			
			private function handleFaultEvt(
				evt:FaultEvent
			):void
			{
				Alert.show(evt.fault.message,"Error");
			}
			
			private function doInfoQuery():void
			{
				userInfoQuery.send();
			}
		]]>
	</mx:Script>
	
	<mx:Panel title="Data Comminucation With ASP and MS SQL Server 2000"
			  height="75%" width="75%" 
			  paddingTop="10"
			  paddingLeft="10"
			  paddingRight="10"
			  paddingBottom="10"
			  horizontalAlign="center" verticalAlign="middle"
			  >
		<mx:Form>
			<mx:FormHeading label="User Info Query"/>
			<mx:FormItem label="Last Name">
				<mx:TextInput id="lName"/>
			</mx:FormItem>
			<mx:FormItem label="First Name">
				<mx:TextInput id="fName"/>
			</mx:FormItem>
			<mx:FormItem label="Age">
				<mx:TextInput id="age"/>
			</mx:FormItem>
			<mx:FormItem label="Address #1">
				<mx:TextInput id="addr1"/>
			</mx:FormItem>
			<mx:FormItem label="Address #2">
				<mx:TextInput id="addr2"/>
			</mx:FormItem>
			<mx:FormItem label="City">
				<mx:TextInput id="city"/>
			</mx:FormItem>
			<mx:FormItem label="State">
				<mx:TextInput id="state"/>
			</mx:FormItem>
			<mx:FormItem label="Zip">
				<mx:TextInput id="zip"/>
			</mx:FormItem>
		</mx:Form>
		<mx:Button label="Query Info" click="doInfoQuery()"/>
	</mx:Panel>
	
	<mx:HTTPService id="userInfoQuery"
					url="http://localhost:8080/project/tscenario/list2.htm"
					useProxy="false" method="GET"
					resultFormat="e4x"
					result="handleResultEvt(event);"
					fault="handleFaultEvt(event);" >
		<mx:request>
			<fname>{fName.text}</fname>
			<lname>{lName.text}</lname>
		</mx:request>
	</mx:HTTPService>
	
</mx:Application>

public void list2(HttpServletRequest request,HttpServletResponse response) throws Exception {
		  response.setContentType(CONTENT_TYPE);
		  response.setHeader("Cache-Control","no-cache");
		  response.setHeader("Pragma","no-cache");
		  response.setDateHeader("Expires",0);
		  PrintWriter out = response.getWriter();
		        StringBuffer xml = new StringBuffer();
		        xml.append("<?xml version="1.0" encoding="UTF-8"?>n");
		     //加上你要发送的xml
		        xml.append("<user_info><first_name>mingzi</first_name>"+
		        		"<last_name>lastname</last_name>"+
		        		"<age>23</age>"+
		        		"<address_1>address1</address_1>"+
		        		"<address_2>address2</address_2>"+
		        		"<city>beijing</city>"+
		        		"<state>Ca</state>"+
		        		"<zip>799</zip></user_info>");
		        out.write(xml.toString());
		 
		
	}

前台解析xml文件

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