import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.validation.annotation.Validated;
@RestController
@RequestMapping("/api")
@Validated
public class MyController {
@PostMapping("/validate")
public ResponseEntity<String> validateRequestBody(@Validated @RequestBody MyRequestDto requestDto) {
// Business logic or validation checks here
// ...
// If validation passes, return success response
return ResponseEntity.ok("Request body is valid.");
// If validation fails, return custom error message and status code
// return ResponseEntity.status(HttpStatus.BAD_REQUEST).body("Custom error message");
}
}