PUT请求上载在Flask中不起作用的文件 [英] PUT request to upload a file not working in Flask

问题描述

我正在使用Flask开发Web应用程序.其中一种视图应该通过PUT请求接受上载的文件，但是我只能使用$ curl -F upload=@filename URL来获取POST请求才能正常工作.对于诸如$ curl --upload-file filenname URL的PUT请求，request.files ImmutableMultiDict为空.我是否在Flask中缺少某些东西，或者可能是使用curl?

I am working on a web application using Flask. One of the views is supposed to accept uploaded files through PUT requests, however I only can get POST requests with $ curl -F upload=@filename URL to work properly. With PUT requests such as $ curl --upload-file filenname URL the request.files ImmutableMultiDict is empty. Am I missing something in Flask or maybe with using curl?

推荐答案

PUT请求与POST请求相比有很大不同.通过PUT请求，可以使用 request.data 或 request.stream .第一个将输入的数据存储为字符串，而request.stream的行为更像文件对象，使其更适合于二进制数据:

PUT request is way different compared to POST request. With PUT request the file contents can be accessed using either request.data or request.stream. The first one stores incoming data as string, while request.stream acts more like a file object, making it more suitable for binary data:

with open('uploaded_image.jpg', 'w') as f:
    f.write(request.stream.read())

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