Flex Óë servlet ͨÐÅ

servlet ¶Ë£º
String userId = request.getParameter("userId");
System.out.println(userId);
response.setCharacterEncoding("UTF-8");
response.getWriter().println("hello world -- ÎÒ°®Äã¡£¡£¡£");

Flex ǰ̨¶Ë
<fx:Script>
<![CDATA[
import flash.trace.Trace;
private var loader:URLLoader = new URLLoader();
private function asCallHandler():void{
// URL
var url:String = "http://localhost/app01/getUser";
// ²ÎÊý
var args:URLVariables = new URLVariables();
args.userId = 1;
// RequestÇëÇó
var request:URLRequest = new URLRequest(url);
request.data = args;// °ó¶¨²ÎÊý
//ÇëÇó¼ÓÔØÆ÷

loader.addEventListener(Event.COMPLETE,handleServerResponse);
loader.load(request);//·¢ËÍÇëÇó
}
private function handleServerResponse(e:Event):void{
trace("User data is loaded");
// »ñÈ¡servletÖÐprintln()µÄÄÚÈÝ
debugText.text = loader.data;
}
protected function button1_clickHandler(event:MouseEvent):void
{
// ·¢ËÍÇëÇó
asCallHandler();
}
]]>