Python Request Post with param data

Question

This is the raw request for an API call:

POST http://192.168.3.45:8080/api/v2/event/log?sessionKey=b299d17b896417a7b18f46544d40adb734240cc2&format=json HTTP/1.1
Accept-Encoding: gzip,deflate
Content-Type: application/json
Content-Length: 86
Host: 192.168.3.45:8080
Connection: Keep-Alive
User-Agent: Apache-HttpClient/4.1.1 (java 1.5)

{"eventType":"AAS_PORTAL_START","data":{"uid":"hfe3hf45huf33545","aid":"1","vid":"1"}}

This request returns a success (2xx) response.

Now I am trying to post this request using requests:

import requests

headers = {'content-type' : 'application/json'}
data ={"eventType" : "AAS_PORTAL_START", 
       "data" : {"uid": "hfe3hf45huf33545", 
                 "aid": "1", 
                 "vid": "1"}
      }
url = ("http://192.168.3.45:8080/api/v2/event/log?"
       "sessionKey=9ebbd0b25760557393a43064a92bae539d962103&"
       "format=xml&"
       "platformId=1")
requests.post(url, params=data, headers=headers)

The response from this request is

<Response [400]>

Everything looks fine to me and I am not quite sure what I posting wrong to get a 400 response.

score 425 · Accepted Answer · edited Dec 15 '20 at 05:36

params is for GET-style URL parameters, data is for POST-style body information. It is perfectly legal to provide both types of information in a request, and your request does so too, but you encoded the URL parameters into the URL already.

Your raw post contains JSON data though. requests can handle JSON encoding for you, and it'll set the correct Content-Type header too; all you need to do is pass in the Python object to be encoded as JSON into the json keyword argument.

You could split out the URL parameters as well:

params = {'sessionKey': '9ebbd0b25760557393a43064a92bae539d962103', 'format': 'xml', 'platformId': 1}

then post your data with:

import requests

url = 'http://192.168.3.45:8080/api/v2/event/log'

data = {"eventType": "AAS_PORTAL_START", "data": {"uid": "hfe3hf45huf33545", "aid": "1", "vid": "1"}}
params = {'sessionKey': '9ebbd0b25760557393a43064a92bae539d962103', 'format': 'xml', 'platformId': 1}

requests.post(url, params=params, json=data)

The json keyword is new in requests version 2.4.2; if you still have to use an older version, encode the JSON manually using the json module and post the encoded result as the data key; you will have to explicitly set the Content-Type header in that case:

import requests
import json

headers = {'content-type': 'application/json'}
url = 'http://192.168.3.45:8080/api/v2/event/log'

data = {"eventType": "AAS_PORTAL_START", "data": {"uid": "hfe3hf45huf33545", "aid": "1", "vid": "1"}}
params = {'sessionKey': '9ebbd0b25760557393a43064a92bae539d962103', 'format': 'xml', 'platformId': 1}

requests.post(url, params=params, data=json.dumps(data), headers=headers)

score 13 · Answer 2 · answered Apr 09 '13 at 11:16

13

Assign the response to a value and test the attributes of it. These should tell you something useful.

response = requests.post(url,params=data,headers=headers)
response.status_code
response.text

status_code should just reconfirm the code you were given before, of course

answered Apr 09 '13 at 11:16

Noel Evans

8,113
8
48
58

1

I tried that before and it says request id syntactically incorrect. – slysid Apr 09 '13 at 12:21
you probably mean `print(response.status_code)` `print(response.text)` – Bob Yoplait Jul 30 '23 at 13:40

score 9 · Answer 3 · answered Apr 09 '13 at 11:17

9

Set data to this:

data ={"eventType":"AAS_PORTAL_START","data":{"uid":"hfe3hf45huf33545","aid":"1","vid":"1"}}

answered Apr 09 '13 at 11:17

Ionut Hulub

6,180
5
26
55

21

DO briefly explain what you have done differently from his data – Ayyan Khan Aug 11 '19 at 20:14

Python Request Post with param data

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