Custom exception handling in Spring Boot Application

Custom exception handling in Spring Boot Application

Step 1 — Create Custom Exception Classes

public class ResourceNotFoundException extends RuntimeException {
    private final String errorCode;
    private final String message;
    private final HttpStatus httpStatus;

    public ResourceNotFoundException(String message ,String errorCode ,HttpStatus httpStatus) {
        super(message ,errorCode ,httpStatus);
    }
}

Step 2 — Create Exception Handling Classes

@ControllerAdvice
public class CustomExceptionHandler extends ResponseEntityExceptionHandler {

    @ExceptionHandler(ResourceNotFoundException.class)
    public ResponseEntity<Object> handleResourceNotFoundException(ResourceNotFoundException ex, WebRequest request) {
        ErrorResponse errorResponse = new ErrorResponse(HttpStatus.NOT_FOUND, ex.getMessage());
        return new ResponseEntity<>(errorResponse, HttpStatus.NOT_FOUND);
    }

    @ExceptionHandler(BadRequestException.class)
    public ResponseEntity<Object> handleBadRequestException(BadRequestException ex, WebRequest request) {
        ErrorResponse errorResponse = new ErrorResponse(HttpStatus.BAD_REQUEST, ex.getMessage());
        return new ResponseEntity<>(errorResponse, HttpStatus.BAD_REQUEST);
    }

    // Add more exception handling methods as needed
}