How to Integrate PhonePe Payment Gateway with Node.js and MongoDB

Introduction
In this Post, we will walk through the process of integrating the PhonePe Payment Gateway into a Node.js application with MongoDB as the database. We’ll cover the steps for initiating payments, handling the payment status, and saving transactions securely. Whether you are building an e-commerce platform or an online course subscription service, this guide will help you seamlessly integrate PhonePe into your system.

Prerequisites

Before getting started, make sure you have the following in place:

• Node.js installed on your machine.
• A MongoDB database (local or cloud).
• An active PhonePe merchant account and access to API credentials (merchantId, key).
• Postman or another API testing tool for testing the integration.
• Basic knowledge of JavaScript and Express.js.

Step 1: Setting Up Your Node.js Project

1. Initialize your project: Run the following commands to set up a new Node.js project

mkdir phonepe-integration
cd phonepe-integration
npm init -y
npm install express mongoose axios crypto-js

1. Project Structure: Create…