0

嗨
有人知道如何使用 HTTPService 下载 pdf 文件吗？
我这样做

private function downloadPDF():void
{
    var httpService:HTTPService = new HTTPService();
    httpService.url = "http://coenraets.org/flexandroid90/FlexAndroid90Minutes.pdf";
    httpService.addEventListener(ResultEvent.RESULT, result);
    httpService.addEventListener(FaultEvent.FAULT, fault);
    httpService.send();
}

private function fault(event:FaultEvent):void
{
    trace("Error");
    trace("\t> Code : "+event.fault.faultCode);
    trace("\t> Description : "+event.fault.faultString);
    trace("\t> Detail : "+event.fault.faultDetail);
}

private function result(event:ResultEvent):void
{
    var pdfFile:File = new File(File.applicationStorageDirectory.nativePath + File.separator + "myPDF.pdf");
    var fileStream:FileStream = new FileStream();
    fileStream.open(pdfFile, FileMode.WRITE);
    fileStream.writeUTFBytes(event.result as String);
    fileStream.close();
}

但我有一个错误

错误
代码：Client.CouldNotDecode
描述：错误 #1090：XML 解析器失败：元素格式错误。
详细信息：空

使用 URLLoader 可以正常工作

private function initPDF():void
{
    loader = new downloadPDF();
    loader.dataFormat = URLLoaderDataFormat.BINARY;
    var request:URLRequest = new URLRequest("http://coenraets.org/flexandroid90/FlexAndroid90Minutes.pdf");
    configureListeners(loader);
    try {
        loader.load(request);
    } catch (error:Error) {
        trace("Unable to load requested URL.");
    }
}

private function configureListeners(dispatcher:EventDispatcher):void {
    dispatcher.addEventListener(Event.COMPLETE, completeHandler);
    dispatcher.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
}

private function completeHandler(event:Event):void {
    var pdfFile:File = new File(File.applicationStorageDirectory.nativePath + File.separator + "myPDF.pdf");
    var fileStream:FileStream = new FileStream();
    fileStream.open(pdfFile, FileMode.WRITE);
    fileStream.writeBytes(loader.data);
    fileStream.close();
}

private function ioErrorHandler(event:IOErrorEvent):void {
    trace("ioErrorHandler: " + event);
}
4

2 回答 2

1

你当然可以。

你只需要添加
httpService.resultFormat="text"

这只会为您提供字符串响应，而不会将其解析为 xml。虽然不推荐，因为 HTTPService 是为 WebServices 设计的，但它可以做到

于 2011-09-10T06:24:20.717 回答
-1

问题是你不能使用 HTTPLoader 下载不是文本或 XML（所以，它是文本）的东西。

于 2011-09-09T12:06:33.120 回答