Spring MVC: How to Handle Custom scenarios Responses for Specific HTTP Status Codes with @ResponseStatus?
I've encountered a strange issue with I'm following best practices but Hey everyone, I'm running into an issue that's driving me crazy. I've been struggling with this for a few days now and could really use some help. Hey everyone, I'm running into an issue that's driving me crazy. I'm trying to create a custom behavior handling mechanism in my Spring MVC application that responds with specific behavior messages for different HTTP status codes. I want to send a user-friendly message back to the client whenever an behavior occurs. I have tried using the `@ResponseStatus` annotation in my controller methods to define responses based on certain exceptions, but I'm running into issues where the default behavior response is being returned instead of my custom messages. Here’s what I have so far: ```java @ControllerAdvice public class GlobalExceptionHandler { @ExceptionHandler(ResourceNotFoundException.class) @ResponseStatus(HttpStatus.NOT_FOUND) public ResponseEntity<String> handleResourceNotFound(ResourceNotFoundException ex) { return new ResponseEntity<>("Resource not found: " + ex.getMessage(), HttpStatus.NOT_FOUND); } @ExceptionHandler(InvalidInputException.class) @ResponseStatus(HttpStatus.BAD_REQUEST) public ResponseEntity<String> handleInvalidInput(InvalidInputException ex) { return new ResponseEntity<>("Invalid input: " + ex.getMessage(), HttpStatus.BAD_REQUEST); } } ``` However, when I throw these exceptions from my controller methods, I still see the default behavior page instead of the custom messages: ```java @GetMapping("/resource/{id}") public Resource getResource(@PathVariable Long id) { return resourceService.findById(id).orElseThrow(() -> new ResourceNotFoundException("ID: " + id)); } ``` I'm using Spring Boot 2.5.4 and have not changed any default behavior handling settings. I’ve checked the `application.properties` and it seems like everything is set to default. Is there something I’m missing that prevents my custom behavior response from being used? Any advice on how to correctly implement this feature would be greatly appreciated! My development environment is Ubuntu. Any ideas what could be causing this? Any help would be greatly appreciated! Am I missing something obvious? This is part of a larger CLI tool I'm building. Any help would be greatly appreciated! Am I approaching this the right way? The project is a mobile app built with Java. What's the correct way to implement this? Any help would be greatly appreciated!