嗨
有人知道如何用HTTPService下載pdf文件嗎?
我做用HTTPService下載Flex文件中的PDF文件
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();
}
但我得到了一個錯誤
錯誤
代碼:Client.CouldNotDecode
說明:錯誤#1090:XML分析器失敗:元素格式不正確。
詳細信息:空
和使用URLLoader它工作正常
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);
}
HTTPService用於調用Web服務,該服務將以文本或XML形式返回數據。它實際上是一個查詢服務器(不是數據庫,不要誤會我)。 爲什麼要使用服務而不是常規URLLoader? – Exort
如果可能,我被要求使用HTTPService。但我會使用URLLoader – Snote
@Snote,你也可以通過HTTPService獲取二進制數據,查看我的回答 –