谷歌应用引擎;上传到blobstore会产生404错误 [英] google app engine; upload to blobstore gives 404 error

问题描述

我在Python 2.7中使用GAE来创建一个网站，该网站可以将带有ascii数据的文件上传到blobstore。
我使用的代码与本教程中的完整示例应用程序中的相同：

https://developers.google.com/appengine/docs/python/blobstore/ #Python_Complete_sample_application

大多数情况下，上传过程都可以正常工作。但有时，我收到以下错误消息：

  404未找到
找不到资源。 
没有这样的上传会话：agtkZXZ-b3BlbnZpenIiCxIVX19CbG9iVXBsb2FkU2Vzc2lvbl9fGICAgICA0IcLDA 
  

有没有人遇到过这个？

解决方案 您使用 create_upload_url（）某些超时（这是10分钟），所以如果您要检索这个网址在网页加载时，它需要一段时间才能上传实际的数据，它最终会过期并返回404。我建议你在上传数据之前获取上传网址。

I am using GAE with Python 2.7 to make a website which can upload files with ascii data to the blobstore. The code I am using for this is pretty much the same as given in the tutorial under the section Complete sample application:

https://developers.google.com/appengine/docs/python/blobstore/#Python_Complete_sample_application

Most of the time, the uploading process works just fine. Sometimes, however I get the following error message:

 404 Not Found
 The resource could not be found.
 No such upload session: agtkZXZ-b3BlbnZpenIiCxIVX19CbG9iVXBsb2FkU2Vzc2lvbl9fGICAgICA0IcLDA

Has anyone come across this before?

解决方案

The URL that you are getting with create_upload_url() has a certain timeout (which is 10 minutes) so if you are retrieving this URL when the webpage is loaded and it takes a while to upload the actual data it will eventually expire and return 404. I would suggest you to get the upload URL just before uploading the data.

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