@PathVariable in Spring Boot | GetMapping {id} | Complete Guide with Code & Postman Test
Learn @PathVariable in Spring Boot the right way—what it is, when to use it, how it works, and why it’s different from @RequestParam. We’ll build a real REST API (GET /employees/{id}) that accepts ID as a path parameter and returns the record, and test it with Postman. Perfect for interviews, placements, and real-world Spring Boot projects. (Hindi + English / Hinglish explanation)
👉 Don’t miss my last video: How to Create REST API in Spring Boot (from scratch)
• Complete Spring Boot REST API Tutorial wit...
What you’ll learn
@PathVariable: definition, syntax, and use-cases
Path parameter vs query parameter (@PathVariable vs @RequestParam)
URI templates (/users/{id}), type conversion, optional IDs
Controller mappings: @GetMapping, @RestController, ResponseEntity
Service layer pattern + Repository (JPA) quick demo
Error handling: 404 Not Found when ID doesn’t exist
Postman testing & best practices
🕒 Chapters
00:00 Intro
00:25 What is @PathVariable?
02:00 @PathVariable vs @RequestParam
04:00 Create API with /employee/{id}
07:00 Handle NotFound (404)
09:30 Postman Testing + Wrap Up
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