How do I send a POST request as a JSON

Question

data              ids    12  3  4  5  6                  urllib2 urlopen  http   abc com api posts create  urllib urlencode data     I want to send a POST request  but one of the fields should be a list of numbers  How can I do that    JSON

User · Accepted Answer

If your server is expecting the POST request to be json, then you would need to add a header, and also serialize the data for your request...

Python 2.x

import json
import urllib2

data = {
        'ids': [12, 3, 4, 5, 6]
}

req = urllib2.Request('http://example.com/api/posts/create')
req.add_header('Content-Type', 'application/json')

response = urllib2.urlopen(req, json.dumps(data))

Python 3.x

https://stackoverflow.com/a/26876308/496445

If you don't specify the header, it will be the default application/x-www-form-urlencoded type.

User · Answer

In the lastest requests package  you can use json parameter in requests post   method to send a json dict  and the Content-Type in header will be set to application json  There is no need to specify header explicitly  import requests  payload     key    value   requests post url  json payload

User · Answer

This one works fine for me with apis  import requests  data   Id  id   name   name  r   requests post  url    https   apiurllink   data   data

User · Answer

I recommend using the incredible requests module   http   docs python-requests org en v0 10 7 user quickstart  custom-headers  url    https   api github com some endpoint  payload     some    data   headers     content-type    application json    response   requests post url  data json dumps payload   headers headers

User · Answer

Here is an example of how to use urllib request object from Python standard library   import urllib request import json from pprint import pprint  url    https   app close com hackwithus 3d63efa04a08a9e0    values          first name    Vlad        last name    Bezden        urls              https   twitter com VladBezden            https   github com vlad-bezden              headers          Content-Type    application json        Accept    application json      data   json dumps values  encode  utf-8   pprint data   try      req   urllib request Request url  data  headers      with urllib request urlopen req  as f          res   f read       pprint res decode    except Exception as e      pprint e

User · Answer

This works perfect for Python 3 5  if the URL contains Query String   Parameter value   Request URL   https   bah2 com ws rest v1 concept  Parameter value   21f6bb43-98a1-419d-8f0c-8133669e40ca  import requests  url    https   bahbah2 com ws rest v1 concept 21f6bb43-98a1-419d-8f0c-8133669e40ca  data     name    Value   r   requests post url  auth   username    password    verify False  json data  print r status code

User · Answer

You have to add header or you will get http 400 error  The code works well on python2 6 centos5 4  code       import urllib2 json      url    http   www google com someservice      postdata     key   value        req   urllib2 Request url      req add header  Content-Type   application json       data   json dumps postdata       response   urllib2 urlopen req data

User · Answer

for python 3 4 2 I found the following will work  import urllib request import json        body     ids    12  14  50     myurl    quot http   www testmycode com quot   req   urllib request Request myurl  req add header  Content-Type    application json  charset utf-8   jsondata   json dumps body  jsondataasbytes   jsondata encode  utf-8       needs to be bytes req add header  Content-Length   len jsondataasbytes   response   urllib request urlopen req  jsondataasbytes

[python] How do I send a POST request as a JSON?

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