🚀 Spring Boot Day 2: REST API, JSON Request, Layers(Controller, Service, DAO) Explained | Saikumar J
🔥 Spring Boot Day 2 - REST API & Layered Architecture 🔥
In this session, Saikumar J explains how to pass JSON requests using @RequestBody and covers key Spring Boot annotations like @RestController, @RequestMapping, @PostMapping, @GetMapping, and @PathVariable.
We'll also dive into the 3-layered architecture in Spring Boot:
✅ Controller Layer – Handles API requests
✅ Service Layer – Business logic processing
✅ DAO Layer – Database interactions
🔹 Topics Covered:
✅ @RestController & Request Handling
✅ Sending JSON data using @RequestBody
✅ @GetMapping vs. @PostMapping
✅ @PathVariable explained
✅ Spring Boot Layered Architecture (Controller, Service, DAO)
✅ @Autowired & @Component for Dependency Injection
✅ Live Demo with Postman Testing
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