Python HTTP request with json data isn't getting php response with json data

Question

I am trying to send a python http request with some json data (I will use this json data in a later case) to server. Server should give a response with some json data (using PHP). Unfortunately there is no any response even though request status code is 200. Any help please!

#request.py

import requests
import urllib3
import json
import os
import time
import sys

#http Request
url = 'http://localhost/response.php'
headers = {'Content-type': 'application/json', 'Accept': 'application/json'}

while True:

    postMessage = '{"Info": {"ID": 1, "IP": "192.168.1.1"}}'
    response = requests.post(url, json=postMessage, headers=headers)
    #trying to decode the response
    try:
        decodedresponse = json.loads(response.text) 
        print(decodedresponse)

    except(ValueError, KeyError, TypeError):
        print("some Error")

#always getting the above print statement!

    break

#response.php


<?php

if(!empty($_POST['json'])){
  $data = [ 'a', 'b', 'c' ];  
  header('Content-type:application/json;charset=utf-8');
  echo json_encode($data);

}
 ?>

Cause you're trying to find post field json which doesn't exist. — Olvin Roght
– Olvin Roght, Commented May 28, 2019 at 11:31
$data = file_get_contents("php://input"); and then echo json_decode($data); — Olvin Roght
– Olvin Roght, Commented May 28, 2019 at 11:32

Olvin Roght · Accepted Answer · 2019-05-28 13:56:08Z

1

You should remove quotes on assignment of postMessage in your:

postMessage = {"Info": {"ID": 1, "IP": "192.168.1.1"}}

And change your php code to:

<?php
$data = file_get_contents("php://input");
header('Content-type:application/json;charset=utf-8');
echo json_encode($data);
?>

answered May 28, 2019 at 13:56

Olvin Roght

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Comments

stefo91 · Accepted Answer · 2019-05-28 12:48:44Z

0

Check your $_POST structure.

<?php
if(!empty($_POST['Info'])){
   $data = [ 'a', 'b', 'c' ];  
   echo json_encode($data);
 }
 else{
     echo json_encode(ison_decode($_POST, TRUE));
 }

edited May 28, 2019 at 12:48

answered May 28, 2019 at 11:32

stefo91

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6 Comments

stefo91 Over a year ago

I made mistake try now w/o json_encode because post data is json and we don't need json_encode.

dragon123 Over a year ago

the above code works. But i realized that only else statement is executing. !!! don't know why

stefo91 Over a year ago

beacouse you don't have or empty $_POST['json']... once again - check your post data structure. I made changes to my answer check and try again.

dragon123 Over a year ago

no way, if statement is not working. and echo $_POST does nothing. so output is same (JSON Error). The problem is empty $_POST['json'] . Tried your new code as well. Given some data to else like $dataElse = [ 'a', 'b', 'c' ]; echo json_encode($dataElse); it worked

stefo91 Over a year ago

I made changes try now.

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