air 读取服务器端资料

air 读取服务器端文件
import flash.events.Event;
import flash.net.URLLoader;
import flash.net.URLRequest;

private var loader:URLLoader = new URLLoader();
private var request:URLRequest = new URLRequest("http://127.0.0.1:8080/IPMS/demo.txt");
protected function read_clickHandler(event:Event):void
{
loader.load(request);
loader.addEventListener(Event.COMPLETE, onComplete);  
}

private function onComplete(event:Event):void
{
var loader:URLLoader = event.target as URLLoader;
if (loader != null)
{
trace(loader.data);
}
else
{
trace("loader is not a URLLoader!");
}
}