Global Exception Handling for Spring-Boot Application Using @ControllerAdvice

@ControllerAdvice
public class GlobalExceptionHandling {

protected Logger logger;

public GlobalExceptionHandling() {
logger = LoggerFactory.getLogger(getClass());
}

@ResponseBody
    public ResponseEntity<?> handleUnauthenticationException(Exception e) {
        return errorResponse(e, HttpStatus.BAD_REQUEST);
    }

@ExceptionHandler({DataIntegrityViolationException.class, SQLIntegrityConstraintViolationException.class})
@ResponseBody
    public ResponseEntity<?> handleConflictException(Exception e) {
        return errorResponse(e, HttpStatus.CONFLICT);
    }

@ExceptionHandler({ SQLException.class, DataAccessException.class, RuntimeException.class })
@ResponseBody
    public ResponseEntity<?> handleSQLException(Exception e) {
        return errorResponse(e, HttpStatus.INTERNAL_SERVER_ERROR);
    }

@ExceptionHandler({ IOException.class, ParseException.class, ProcessingException.class, JsonParseException.class, JsonMappingException.class })
@ResponseBody
    public ResponseEntity<?> handleParseException(Exception e) {
        return errorResponse(e, HttpStatus.BAD_REQUEST);
    }

@ExceptionHandler({ InvalidKeyException.class, NoSuchAlgorithmException.class })
@ResponseBody
    public ResponseEntity<?> handleHashException(Exception e) {
        return errorResponse(new Exception("Encrypt/Decrypt key is requested"), HttpStatus.LOCKED);
    }

    @ExceptionHandler({ Exception.class })
    @ResponseBody
    public ResponseEntity<?> handleAnyException(Exception e) {
        return errorResponse(e, HttpStatus.INTERNAL_SERVER_ERROR);
    }
   
    protected ResponseEntity<ExceptionMessage> errorResponse(Throwable throwable,
            HttpStatus status) {
        if (null != throwable) {
            return response(new ExceptionMessage(throwable), status);
        } else {
            return response(null, status);
        }
    }

    protected <T> ResponseEntity<T> response(T body, HttpStatus status) {
        return new ResponseEntity<T>(body, new HttpHeaders(), status);
    }
}



Another class

import com.fasterxml.jackson.annotation.JsonProperty;

public class ExceptionMessage {

private final Throwable throwable;

public ExceptionMessage(Throwable throwable) {
this.throwable = throwable;
}

@JsonProperty("error")
public String getError() {
return throwable.getMessage();
}

}