如何从 base64 Python 发送 multipart/form 文件

Question

如何在 Python 中使用多部分表单数据发送 base64 图像？

我使用请求模块，并从文件中读取 base64 字符串

我需要通过多部分形式发送图像，但是这个文件是 base64 解码的。如何解决？

此代码不发送文件...:(

# base64 file /9j/4AAQSkZJRgABA...
ref_path = open("template.txt", "r")
image = ref_path.read()

decoded_image = base64.b64decode(image)

url = "https://example.com"

headers = {'content-type': 'multipart/form-data'}

files = {
    'file1': decoded_image
}

r = requests.post(url, headers=headers, files=files)

print(json.loads(r.text))

Answer 1

测试文件和测试的工作示例 url 仅转储传递的数据。

import base64
from io import BytesIO
from pprint import pprint

import requests

iamge = open("template.txt", "r").read()
decoded_image = base64.b64decode(iamge)

files = {
    'file1': ('test file.csv', BytesIO(decoded_image))
}

r = requests.post("https://httpbin.org/post", files=files)
pprint(r.json())

print('++++++++++ Body debug ++++++++++')
print(r.request.body.decode())

产出

# > python test.py
{'args': {},
 'data': '',
 'files': {'file1': 'How to send base64 image using multipart form data in '
                    'Python?\n'
                    '\n'
                    'I use a requests module, and read base64 string from '
                    'file\n'
                    '\n'
                    'I need to send image by multipart form, but this file is '
                    'base64 decoded. How to solve it?\n'
                    '\n'
                    'This code does not send file... :('},
 'form': {},
 'headers': {'Accept': '*/*',
             'Accept-Encoding': 'gzip, deflate',
             'Content-Length': '397',
             'Content-Type': 'multipart/form-data; '
                             'boundary=ea195eaa1aa183b4b32cc5c125ee0b64',
             'Host': 'httpbin.org',
             'User-Agent': 'python-requests/2.22.0'},
 'json': None,
 'origin': '188.85.244.205, 188.85.244.205',
 'url': 'https://httpbin.org/post'}
++++++++++ Body debug ++++++++++
--ea195eaa1aa183b4b32cc5c125ee0b64
Content-Disposition: form-data; name="file1"; filename="test file.csv"

How to send base64 image using multipart form data in Python?

I use a requests module, and read base64 string from file

I need to send image by multipart form, but this file is base64 decoded. How to solve it?

This code does not send file... :(
--ea195eaa1aa183b4b32cc5c125ee0b64--

You shouldn't pass headers = {'content-type': 'multipart/form-data'} because files upload also requires boundary=xxxxx for splitting POST body to named sequence.

如何从 base64 Python 发送 multipart/form 文件

How to send multipart/form file from base64 Python

python

base64

multipartform-data

python-requests