Question

我想知道最近是否有任何关于从外部应用程序上传blob到appengine的变化？仅在3个月前完成工作的东西现在挂在做一个http帖子上传blob时。

之前工作正常的代码（见下文）包括从AppEngine获取拉取队列（使用REST API），接收此任务的一些内容，然后将结果作为Blob上传回AppEngine。上传blob的url是由appengine使用blobstoreService.createUploadUrl（“/ upload”）创建的;

，形式为：

      http://myapp.appspot.com/_ah/upload/AMmfu6aAHnkuS4ngyRJDn7urFFZeBxb_-3P-r7RY9udMvRjLWkEZNJMgUX1DFczNVi-NhIxcFat2AEPXs2IRJ0AOmznSMgcrCKmL7mGAmS7nqtr-UyYFkglD88BwCfzIui9M2yez7DSQ/ALBNUaYAAAAAUGRlEwpeGEc5ozp8Z8sDO33qgCi2AiIE/

我查看了AppEngine上的日志，似乎没有触发负责/上传的servlet。

老实说，在这个阶段我没有想法，任何帮助都将不胜感激！： - ）

干杯，

基利安

 public boolean uploadAsBlob(String dataToWrite, String uploadURL) {

 try {

      BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(tempFileLocation));

      bufferedWriter.write(dataToWrite);

      bufferedWriter.newLine();

      bufferedWriter.close();

      MultipartEntity entity = new MultipartEntity();

      entity.addPart(blobFileName, new FileBody(new File(tempFileLocation)));

      HttpPost method = new HttpPost(uploadURL);

      method.setEntity(entity);

      final HttpParams httpParams = new BasicHttpParams();

      HttpConnectionParams.setConnectionTimeout(httpParams, 10000);

      DefaultHttpClient httpclient = new DefaultHttpClient(httpParams);


      //It hangs at the following line!

      HttpResponse response = httpclient.execute(method);

      if (response.getStatusLine().getStatusCode() == 200) {

           logger.info("Uploaded blob to url: " + uploadURL);

           return true;

      } else {

           logger.warning("Couldn't upload blob to url: " + uploadURL);

      }



      } catch (Exception e) {

      logger.warning("Exception " + e.getMessage() + " occured while uploading blob to url:" + uploadURL);

      logger.warning("Couldn't upload blob to url: " + uploadURL);

      }

      return false;

      }

Answer 1

我发现GAE最近在调用blobstoreService.createUploadUrl（）时开始保留任何GET参数。就我而言：

http://www.myapp.com/BG?_=1354631578951

使用此（意外）参数，创建的URL为：

http://www.myapp.com/_ah/upload/?_=1354631578951/AMmfu6YgVPoJzWXdbf70k6J0zdjEeRnnRJ2PYCb3Jgdwk3SqmKEnFyKgy_17CKwiqbC2HyO-FlPVX-C53W0LjHSywaq7YmLegD97uU-GrpWRdBdWbfKf0Dk/ALBNUaYAAAAAUL4L8iDS5E99f3Wky2p59wWpCD84AqoP/

请注意，'_'参数仍然存在。删除参数（或可能从GET移动到POST）修复了问题。

Blob上传挂起

1 个答案: