🚀 In this tutorial, we build JWT Authentication in Spring Boot from scratch and secure a REST API step-by-step.
If you're learning Spring Security, REST APIs, or backend development, this practical demo will help you understand how JSON Web Tokens (JWT) work and how to protect your endpoints properly.
In this video you will learn:
✅ What JWT authentication is
✅ How JWT works in REST APIs
✅ How to build a login endpoint
✅ How to generate JWT tokens in Spring Boot
✅ How to implement a custom JWT filter
✅ How to secure API endpoints with Spring Security
✅ How to test authentication using Postman and cURL
We will build a simple REST API with JWT authentication using:
• Spring Boot
• Spring Security
• JSON Web Tokens (JWT)
• Maven
• Postman
This tutorial is beginner friendly and perfect if you are preparing for Java backend interviews or learning API security.
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