Upload Image using POST form data in Python-reques

问题:

I'm working with wechat APIs ... here I've to upload an image to wechat's server using this API http://admin.wechat.com/wiki/index.php?title=Transferring_Multimedia_Files

    url = 'http://file.api.wechat.com/cgi-bin/media/upload?access_token=%s&type=image'%access_token
    files = {
        'file': (filename, open(filepath, 'rb'),
        'Content-Type': 'image/jpeg',
        'Content-Length': l
    }
    r = requests.post(url, files=files)

I'm not able to post data

回答1:

From wechat api doc:

curl -F media=@test.jpg "http://file.api.wechat.com/cgi-bin/media/upload?access_token=ACCESS_TOKEN&type=TYPE"

Translate the command above to python:

import requests
url = 'http://file.api.wechat.com/cgi-bin/media/upload?access_token=ACCESS_TOKEN&type=TYPE'
files = {'media': open('test.jpg', 'rb')}
requests.post(url, files=files)

回答2:

I confronted similar issue when I wanted to post image file to a rest API from Python (Not wechat API though). The solution for me was to use 'data' parameter to post the file in binary data instead of 'files'. Requests API reference

data = open('your_image.png','rb').read()
r = requests.post(your_url,data=data)

Hope this works for your case.

回答3:

import requests

image_file_descriptor = open('test.jpg', 'rb')
filtes = {'media': image_file_descriptor}
url = '...'
requests.post(url, files=files)
image_file_descriptor.close()

Don't forget to close the descriptor, it prevents bugs: Is explicitly closing files important?

回答4:

Use this snippet

import os
import requests
url = 'http://host:port/endpoint'
with open(path_img, 'rb') as img:
  name_img= os.path.basename(path_img)
  files= {'image': (name_img,img,'multipart/form-data',{'Expires': '0'}) }
  with requests.Session() as s:
    r = s.post(url,files=files)
    print(r.status_code)

回答5:

For Rest API to upload images from host to host:

import urllib2
import requests

api_host = 'https://host.url.com/upload/'
headers = {'Content-Type' : 'image/jpeg'}
image_url = 'http://image.url.com/sample.jpeg'

img_file = urllib2.urlopen(image_url)

response = requests.post(api_host, data=img_file.read(), headers=headers, verify=False)

You can use option verify set to False to omit SSL verification for HTTPS requests.

回答6:

client.py

files = {
    'file': (
        os.path.basename('path/to/file'), 
        open('path/to/file', 'rb'), 
        'application/octet-stream'
    )
}
requests.post(url, files=files)

server.py

@app.route('/', methods=['POST'])
def index():

    picture = request.files.get('file')
    picture.save('path/to/save')

    return 'ok', 200