如何使用Google App Engine的Blobstore保存网络图像 [英] How to use Google App Engine's Blobstore to save web images

问题描述

UPDATE

这个问题最初是在没有支持编程文件创建的时候提出的（通过url例）。这已经改变，请参阅： http://code.google.com /appengine/docs/java/blobstore/overview.html#Writing_Files_to_the_Blobstore

我正在访问几个不同的API来提取图片。我的应用程序是GAE + Python，我想使用Blobstore来保存这些图像。 GAE Blobstore文档提供了有关如何通过表单将图像保存到Blobstore的清晰示例，但不是直接从url中获取。

http://code.google.com/intl/iw/appengine/docs/python/blobstore /overview.html#Writing_Files_to_the_Blobstore

我想知道如何保存 http://api.website.com/images/foo.jpg 至Blobstore。

解决方案

使用新的File API与urlfetch API结合使用，您应该可以通过表单传递图像url，将其提取到服务器端并将其写入blobstore：

HTTP：// code.google.com/intl/iw/appengine/docs/python/blobstore/ove rview.html＃Writing_Files_to_the_Blobstore

UPDATE

This question was originally asked at a time when there was no support for programmatic file creation (via url for example). That has changed, see: http://code.google.com/appengine/docs/java/blobstore/overview.html#Writing_Files_to_the_Blobstore

I'm accessing a couple different APIs to fetch images. My application is GAE + Python and I want to use the Blobstore to save these images. The GAE Blobstore documentation provides clear examples of how to save images to Blobstore via a form, but not directly from an url.

http://code.google.com/intl/iw/appengine/docs/python/blobstore/overview.html#Writing_Files_to_the_Blobstore

I want to know how to save http://api.website.com/images/foo.jpg to the Blobstore.

解决方案

Using the new File API in combination with urlfetch API you should be able to pass the image url through the form, fetch it server-side and write it to the blobstore:

http://code.google.com/intl/iw/appengine/docs/python/blobstore/overview.html#Writing_Files_to_the_Blobstore

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