斯贝里2A在正确的轨道上。罗伯特·彭纳最近向我们展示了
URLLoader is nothing but a tiny wrapper
围绕着本地的曲面,所以滚动您自己的曲面是一个合理的想法。
public class URLLoader extends EventDispatcher{
private var _urlRequest:URLRequest; //the built-in URLLoader doesn't give you any access to the requested URL...
private var _stream:URLStream;
private var _dataFormat:String;// = "text"
private var _data:*;
private var _bytesLoaded:uint;// = 0
private var _bytesTotal:uint;// = 0
public function get request():URLRequest { return _urlRequest;}
public function get fileName():String { return _urlRequest.url.match(/(?:\\|\/)([^\\\/]*)$/)[1];}
public function get dataFormat():String { return _dataFormat;}
public function get data():* { return _data; }
public function get bytesLoaded():uint { return _bytesLoaded; }
public function get bytesTotal():uint { return _bytesTotal; }
public function URLLoader(request:URLRequest = null){
super();
_stream = new URLStream();
_stream.addEventListener(Event.OPEN, openHandler);
_stream.addEventListener(ProgressEvent.PROGRESS, progressHandler);
_stream.addEventListener(Event.COMPLETE, completeHandler);
_stream.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
_stream.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
_stream.addEventListener(HTTPStatusEvent.HTTP_STATUS, httpStatusHandler);
if (request != null){
load(request);
};
}
public function load(request:URLRequest):void {
_urlRequest = request;
_stream.load(_urlRequest);
}
public function close():void{
_stream.close();
}
private function progressHandler(event:ProgressEvent):void {
_bytesLoaded = event.bytesLoaded;
_bytesTotal = event.bytesTotal;
dispatchEvent(event);
}
private function completeHandler(event:Event):void{
var bytes:ByteArray = new ByteArray();
_stream.readBytes(bytes);
switch (_dataFormat){
case "binary":
_data = bytes;
break;
case "variables":
if (bytes.length > 0){
_data = new URLVariables(bytes.toString());
break;
};
case "text":
default:
_data = bytes.toString();
break;
};
trace("URLLoader: (" + fileName + "): " + event.type);
dispatchEvent(event);
}
private function openHandler(event:Event):void {
trace("URLLoader: ("+fileName+"): " + event.type +" "+_urlRequest.url);
dispatchEvent(event);
}
private function securityErrorHandler(event:SecurityErrorEvent):void {
trace("URLLoader ("+fileName+"): " + event.type + " - " + event.text);
dispatchEvent(event);
}
private function httpStatusHandler(event:HTTPStatusEvent):void {
dispatchEvent(event);
}
private function ioErrorHandler(event:IOErrorEvent):void {
trace("URLLoader ("+fileName+"): " + event.type + " - " + event.text);
dispatchEvent(event);
}
}
注意请求和文件名属性。要从完整的事件处理程序获取urlrequest,只需执行以下操作:
var req:URLRequest = URLLoader(evtObj.target).request;