<- Test Directory

Post with JSON data

Send an HTTP POST request with a JSON data payload

Overview

Sending POST requests is very easy using LoadForge. With JSON data you need to apply a small amount of parsing to it before you post. The below example will submit a simple payload to a URL.

You will see we use json.dumps(payload) to process the payload array, and we set the header Content Type to application/json.

Code

import time, json
from locust import HttpUser, task, between

class QuickstartUser(HttpUser):
    wait_time = between(3, 5)

    @task(1)
    def api_page(self):
        payload = {
            'key': 'value'
            'question': 'answer123'
        }
        
        headers = {'content-type': 'application/json'}
        
        response = self.client.post("/post/endpoint", data=json.dumps(payload), headers=headers)


This guide is part of the LoadForge Directory, an index of locustfile's for use with LoadForge website and API load tests. We also provide a wizard to generate tests, and onboarding assistance for clients. Contact us should you have any questions.

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For more help on Tests please see our official documentation. Logged in users can also use our wizard to generate a locustfile, or you can record your browser steps.

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