Spring Boot + OpenAI ChatGPT API Integration Tutorial

Integrating ChatGPT into your Java applications has never been easier — thanks to the OpenAI API and Spring Boot’s powerful REST capabilities.

In this step-by-step tutorial, we’ll show you how to build a complete Spring Boot backend that connects to the OpenAI ChatGPT API, handles user prompts, and returns AI-generated responses. Whether you’re building a chatbot, coding assistant, or a smart content generator — this guide gives you everything you need.

🚀 What You Will Learn

• How to get an OpenAI API key
• How to configure Spring Boot for ChatGPT API access
• How to send prompts and receive responses
• Build a REST API endpoint that integrates with ChatGPT
• Real-world-ready architecture using RestClient, DTOs, and service layers

YouTube Video with Live Demo

🔐 Step 1: Get Your OpenAI API Key

Before anything else, you need access to OpenAI’s API.

✅ Steps to Get API Key

1. Go to https://platform.openai.com/account/api-keys