werkzeug.exceptions.BadRequest: 400 Bad Request: The browser (or proxy) sent a request that this server could not understand.

[pradeepdev-1995]

I tried the following code segment with flask

server.py

from flask import Flask,request
@app.route("/api_1/<query_param_1>/",methods=['GET', 'POST', 'PUT', 'DELETE'])
def myfunction(query_param_1):
 if request.method == 'POST':
     body = request.get_json()
     print("Body is "+ body)

Using flask, I could host the server.py file at localhost in a port address 7000 successfully.
Then I tried to call that API using from my client.py file

client.py

import requests
response = requests.post("http://0.0.0.0:7000/api_1/1235/")

Even though I am not passing any body to this function, I am expecting the printing Body is None in server.py console.
But it shows errors like this in the line - body = request.get_json()

werkzeug.exceptions.BadRequest: 400 Bad Request: The browser (or proxy) sent a request that this server could not understand.

Here are the package versions I am using

OS : Ubuntu 18.04
Python : 3.9.13
Werkzeug==2.1.1
requests==2.26.0
Flask==2.0.3
Flask-Cors==3.0.9

The above code worked perfectly when I downgraded the Werkzeug version to 2.0.0

But I must need to work on the Werkzeug==2.1.1 version. How to solve the issue?

[ThiefMaster]

How do you expect to get a JSON body when your request does not contain anything JSON-related? :)

https://flask.palletsprojects.com/en/2.2.x/api/#flask.Request.get_json

Try request.get_json(silent=True) instead.

[pradeepdev-1995]

@ThiefMaster Thank you. It worked