JWT Authentication with Spring Boot 3.3 & Java 21 | Swagger UI Integration

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#springboot #java21 #jwt #restapis #h2 #gradle #jsonwebtoken #springboottutorial

Is video mein hum step-by-step seekhenge kaise banate hain ek secure Employee Portal application using Spring Boot 3.3, Java 21, aur JWT (JSON Web Token) authentication. Saath hi, hum integrate karenge Swagger UI, jahan se hum login karke JWT token generate kar sakte hain aur protected endpoints easily test kar sakte hain. Poora explanation Hindi mein (English font) diya gaya hai, taaki beginners bhi asani se follow kar saken.

📌 Video Mein Cover Kiya Gaya:
1. JWT concept – kya hai aur kyun use karte hain
2. Spring Boot 3.3 + Java 21 project setup (Gradle)
3. H2 in-memory database configuration
4. User entity & repository
5. CustomUserDetailsService – user loading
6. JwtUtil class – token generation & validation
7. JwtAuthFilter – har request par JWT verify karna
8. SecurityConfig – endpoints ko secure karna
9. AuthController – `/login` endpoint, default Swagger example
10. EmployeeController – protected APIs (`/employee/profile`, `/employee/salary`)
11. Swagger UI integration – JWT token Paste karke test karna
12. H2 Console demo
13. Best practices & next steps

🔗 **Full Source Code (GitHub):**
https://github.com/javaeveryconcept/employee-portal-jwt-springboot

🛠️ **Project Requirements:**
- Java 21
- Spring Boot 3.3
- Gradle
- jjwt
- H2 Database
- springdoc-openapi-starter-webmvc-ui

⏱️ YouTube Time Summary:
00:06 – 01:23 → What is JWT?
01:24 – 02:08 → Authentication vs Authorization
02:10 – 02:57 → Session-Based Authentication
03:00 – 04:26 → JWT Structure
04:27 – 06:30 → How JWT Keeps Your Data Secure
06:31 – 07:51 → Scenario Overview and Project Setup
07:52 – 08:14 → Architecture
08:15 – 08:50 → Tech Stack
08:54 – 09:07 → Gradle Dependencies
09:11 – 09:22 → Testing with Swagger
09:24 – 11:00 → Spring Setup with Initializr (start.spring.io)
24:32 – 24:55 → H2 Console
24:56 – 27:29 → Swagger UI
27:29 – 28:29 → Token Decode (jwt.io)
28:30 – 28:56 → Recap

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Видео JWT Authentication with Spring Boot 3.3 & Java 21 | Swagger UI Integration канала Java Every Concept