Spring Boot 전역 예외 처리 (Global Exception Handling)

@Getter
@Builder
public class ErrorResponse {
    private String code;
    private String message;
    private int status;
}

public class UserNotFoundException extends RuntimeException {
    public UserNotFoundException(String message) {
        super(message);
    }
}

@RestControllerAdvice
public class GlobalExceptionHandler {
 
    @ExceptionHandler(UserNotFoundException.class)
    public ResponseEntity<ErrorResponse> handleUserNotFound(UserNotFoundException ex) {
        ErrorResponse response = ErrorResponse.builder()
                .code("USER_NOT_FOUND")
                .message(ex.getMessage())
                .status(HttpStatus.NOT_FOUND.value())
                .build();
        return new ResponseEntity<>(response, HttpStatus.NOT_FOUND);
    }
 
    @ExceptionHandler(Exception.class)
    public ResponseEntity<ErrorResponse> handleGeneralException(Exception ex) {
        ErrorResponse response = ErrorResponse.builder()
                .code("INTERNAL_SERVER_ERROR")
                .message("서버 내부 오류가 발생했습니다.")
                .status(HttpStatus.INTERNAL_SERVER_ERROR.value())
                .build();
        return new ResponseEntity<>(response, HttpStatus.INTERNAL_SERVER_ERROR);
    }
}