在烧瓶中从GAE Blobstore服务斑点

问题描述

我正在尝试使用Flask来保存在blobstore中保存的大文件。

对于较小的文件，我可以简单地做：

  def download_blob blob_key）：
 blob_info = blobstore.get（blob_key）
 response = make_response（blob_info.open（）。read（））
 response.headers ['Content-Type'] = blob_info。 content_type 
 response.headers ['Content-Disposition'] ='attachment; filename =％s'％blob_info.filename 
 
返回响应
  

但是对于较大的文件则失败。如何将BlobstoreDownloadHandler并入到我的Flask应用程序中，而不需要回到webapp2？

解决方案

如果您不关心范围请求，那么您可以使用blob-key的字符串版本以及内容类型和处理方式设置X-AppEngine-BlobKey（或blobstore.BLOB_KEY_HEADER）的标题。 p>

I'm trying to serve big files saved in the blobstore using Flask.

For smaller files I can simply do:

def download_blob(blob_key):
    blob_info = blobstore.get(blob_key)
    response = make_response(blob_info.open().read())
    response.headers['Content-Type'] = blob_info.content_type
    response.headers['Content-Disposition'] = 'attachment; filename="%s"' % blob_info.filename

    return response

but it fails for larger files. How can I incorporate BlobstoreDownloadHandler into my Flask app without resorting back to webapp2?

解决方案

If you don't care about range-requests, then you can just set a header of 'X-AppEngine-BlobKey' (or blobstore.BLOB_KEY_HEADER to be safe) with the string-version of your blob-key, along with the content type and disposition as you have it.

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