问设置URLRequest路径时出现问题

EN

function onSaveJPG(e:Event):void{
    var myEncoder:JPGEncoder = new JPGEncoder(100);
    var byteArray:ByteArray = myEncoder.encode(bitmapData);

    var header:URLRequestHeader = new URLRequestHeader("Content-type", "application/octet-stream");

    var url:String = "../../default.aspx";

    var saveJPG:URLRequest = new URLRequest(url);
    saveJPG.requestHeaders.push(header);
    saveJPG.method = URLRequestMethod.POST;
    saveJPG.data = byteArray;



    var urlLoader:URLLoader = new URLLoader();
    urlLoader.addEventListener(Event.COMPLETE, sendComplete);
    urlLoader.load(saveJPG);

    function sendComplete(event:Event):void{
        warn.visible = true;
        addChild(warn);
        warn.addEventListener(MouseEvent.MOUSE_DOWN, warnDown);
        warn.buttonMode = true;
    }