Question

我正在尝试使用Python中的POST请求（请求库）上传文件。我得到HTTP 400 error作为回复。我认为这是因为我的POST请求不是它应该的格式。有关如何将POST请求1转换为2的任何想法吗？

代码：

files = {"file": ("test-file.txt", open("c:/users/johndoe/desktop/test-file.txt", "rb"), "text/plain")}
response = webdriver.request("POST", "https://something.com/attachments", files = files)

我目前的情况（1）：

--d9bd23df892242a489b0f638d62502a6
Content-Disposition: form-data; name="file"; filename="test-file.txt"
Content-Type: text/plain

This is a test file.

Regards,

John Doe
--d9bd23df892242a489b0f638d62502a6--

我应该拥有什么（2）：

-----------------------------26789175756830
Content-Disposition: form-data; name="fileName"

test-file.txt
-----------------------------26789175756830
Content-Disposition: form-data; name="fileSize"

45
-----------------------------26789175756830
Content-Disposition: form-data; name="description"

undefined
-----------------------------26789175756830
Content-Disposition: form-data; name="file"; filename="test-file.txt"
Content-Type: text/plain

This is a test file.

Regards,

John Doe
-----------------------------26789175756830--

我认为我需要添加（3）：

-----------------------------26789175756830
Content-Disposition: form-data; name="fileName"

test-file.txt
-----------------------------26789175756830
Content-Disposition: form-data; name="fileSize"

45
-----------------------------26789175756830
Content-Disposition: form-data; name="description"

undefined
-----------------------------26789175756830

Answer 1

您必须明确指定字段fileName，fileSize和description，因为请求不会自动为您生成：

import os
import requests

filepath = 'foo'
files = {'file': open(filepath, 'rb')}
data = {
    'fileName': filepath,
    'fileSize': os.path.getsize(filepath),
    'description': 'undefined'
}

response = requests.post('http://www.example.com/', data=data, files=files);

这会生成如下请求：

POST / HTTP/1.1
Connection: keep-alive
Accept: */*
Accept-Encoding: gzip, deflate
Host: www.example.com
User-Agent: python-requests/2.13.0
Content-Length: 439
Content-Type: multipart/form-data; boundary=75a7213b6b4f493fabe26feeafb8551c
Http.Entity.Parser.Multipart.Tempdir: /tmp/pZjDE

--75a7213b6b4f493fabe26feeafb8551c
Content-Disposition: form-data; name="description"

undefined
--75a7213b6b4f493fabe26feeafb8551c
Content-Disposition: form-data; name="fileSize"

16
--75a7213b6b4f493fabe26feeafb8551c
Content-Disposition: form-data; name="fileName"

foo
--75a7213b6b4f493fabe26feeafb8551c
Content-Disposition: form-data; name="file"; filename="foo"

contents of foo

--75a7213b6b4f493fabe26feeafb8551c--

POST文件上载导致HTTP 400错误响应

1 个答案: