Arquitetura de Sistema com Java + Spring

<?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">

	<fx:Declarations>
		<s:RemoteObject id="usuarioService"
			destination="usuarioService"
			channelSet="{CustomChannel.getChannelSet()}"
			fault="onFault(event)">
			<s:method name="autenticar" result="onResultAutenticar(event)" />
		</s:RemoteObject>
	</fx:Declarations>
	
	<s:Panel width="200" height="150" title="Login"
			 horizontalCenter="0" verticalCenter="-25">
		
		<s:Label x="10" y="24" text="Login&#xd;" width="37"
				 textAlign="right"/>
		<s:TextInput id="tfLogin"
			x="56" y="14"/>
		
		<s:Label x="10" y="54" text="Senha"/>
		<s:TextInput id="tfSenha"
			x="56" y="44"/>
		
		<s:Button id="btEntrar"
			x="114" y="80" label="Entrar"
			click="autenticar()"/>
	</s:Panel>
	
	<fx:Script>
		<![CDATA[
			
			import helper.CustomChannel;
			import mx.controls.Alert;
			import mx.rpc.events.FaultEvent;

			private function autenticar():void
			{
				usuarioService.autenticar(tfLogin.text, tfSenha.text);
			}
			
			private function onFault(event:FaultEvent):void
			{
				Alert.show("Erro");
			}
			
			private function onResultAutenticar(event:ResultEvent):void
			{
				Alert.show("Autenticado");
			}
			
		]]>
	</fx:Script>
	
</s:Application>