How to Send POST Requests Using Postman?

When testing APIs, the POST method is one of the most commonly used HTTP methods.The POST method allows you to write data to an API endpoint, making it essential for various operations such as user registration and data submissions. In this article, we will introduce how to easily send POST requests using Postman, a widely used API testing tool.

What is POST?

POST is an HTTP method primarily used to send data to a server to create or update resources. This method can handle various tasks that involve writing operations on the server. Examples of actions that can be accomplished using the POST method include:

• Posting updates on social media platforms
• Registering new users
• Performing other data writing operations

Given these examples, it's clear that using the POST method is often necessary when working with APIs.

Understanding HTTP Methods: A Comprehensive Guide to PUT vs POST

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Sending a POST Request in Postman

Postman is a popular tool for users looking to utilize and test APIs. So, how do you send a POST request to an API endpoint using Postman? Here’s a detailed step-by-step guide.

1. Set the HTTP Method to POST

First, you need to select the POST method for your API communication.

2. Configure the Endpoint URL

After setting the HTTP method to POST, enter the API endpoint URL.

3. Set Up the POST Headers in Postman

Go to the Headers tab to configure the header names and values necessary for your request.

Example Header Configuration:

• Content-Type: Specifies the data format of the request body (e.g., application/json).
• Authorization: Provides authentication information (e.g., Bearer xxxxxxxx).
• User-Agent: Sends client information (e.g., PostmanRuntime/7.1.1).
• Accept: Specifies the acceptable data formats for the response (e.g., application/json).

Headers may vary per request, so it's important to configure them according to the API specification to ensure you receive the intended response.

4. Configure the POST Body in Postman

Specify the appropriate format and content for the request body based on your API requirements. Here are the primary methods you can use to set the body for a POST request in Postman:

• raw: Enter plain text, JSON, XML, etc., directly into the request body.
• form-data: Set key-value pairs similar to a form; file uploads are also supported.
• x-www-form-urlencoded: Encode key-value pairs and concatenate them using &.
• binary: Use this for sending binary data.
• GraphQL: Set your GraphQL query here.

Using raw and form-data formats is common.

Example Body Configuration:

• To send JSON data, select raw and input your JSON.
• To upload a file, use form-data, specifying the key and the file.
• To send parameters like API keys or search conditions, use x-www-form-urlencoded.

5. Send the POST Request

Once everything is set, click the "Send" button located at the top right of the screen to submit your JSON data.

At this point, you have configured and sent your POST request in Postman.

An Easier Way to POST Requests: EchoAPI

EchoAPI is an ultra-lightweight collaboration tool for API development that supports Scratch Pad. It allows for API design, documentation generation, and automated testing.It overing the entire API lifecycle.EchoAPI is provides enhanced functionality compared to Postman with fewer restrictions. EchoAPI also supports the automation of API testing through collection creation.

Of course, EchoAPI can send POST requests as well. You can configure parameters, body, and headers for POST requests with an intuitive UI, ensuring a better user experience.