AS3 实现读取本地数据

应用此文，必须在SWF文件同目录想建一个文件request.txt，在这个文件里输入一定内容。。。你会在flash控制台看到她。。
package  {
	
	import flash.display.MovieClip;
	import flash.display.Sprite;
	import flash.net.*;
	import flash.events.*;
	
	public class AA extends MovieClip {
		
		
		public function AA() {
			// constructor code
			var loader:URLLoader = new URLLoader();
			conf(loader);
			var req:URLRequest = new URLRequest("request.txt");
			req.method = URLRequestMethod.POST;
			loader.load(req);
		}
		public function conf(evt:IEventDispatcher):void{
			evt.addEventListener(Event.COMPLETE,completehandler);
			/*evt.addEventListener(Event.OPEN,openHandler);
			evt.addEventListener(ProgressEvent.PROGRESS,progressHandler);
			evt.addEventListener(SecurityErrorEvent.SECURITY_ERROR,securityHandler);
			evt.addEventListener(HTTPStatusEvent.HTTP_STATUS,httpHandler);
			evt.dispatchEvent(IOErrorEvent.IO_ERROR,ioErronHandler);*/
		}
		public function completehandler(ev:Event):void{
			var lod:URLLoader = URLLoader(ev.target);
			trace("complete加载："+lod.data);
		}
	}
	
}