beginner~2h
Building REST APIs
Foundations are done. This module is where an HTTP request actually becomes a method call in your code — and the request/response shapes real clients depend on.
Learning objectives
- Beginner: Trace a single incoming HTTP request through DispatcherServlet to the specific controller method that handles it.
- Intermediate: Correctly choose between @RequestBody, @RequestParam, and @PathVariable for a given endpoint's inputs.
- Advanced: Design response status codes and ResponseEntity usage so the API's contract is explicit and correct, not just "always 200."
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Building REST APIs