Java Springboot全局异常处理

public interface ErrorType {
    /**
     * 返回code
     *
     * @return
     */
    String getCode();
    /**
     * 返回mesg
     *
     * @return
     */
    String getMesg();
}

@Getter
public enum SystemErrorType implements ErrorType {
    SYSTEM_ERROR("-1", "系统异常"),
    SYSTEM_BUSY("000001", "系统繁忙,请稍候再试");
    /**
     * 错误类型码
     */
    private String code;
    /**
     * 错误类型描述信息
     */
    private String mesg;
    SystemErrorType(String code, String mesg) {
        this.code = code;
        this.mesg = mesg;
    }
}

@Getter
public class MyException extends RuntimeException{
    /**
     * 异常对应的错误类型
     */
  private final ErrorType errorType;
   /**
    * 默认是系统异常
    */
   public MyException () {
       this.errorType = SystemErrorType.SYSTEM_ERROR;
   }
   public MyException(SystemErrorType systemErrorType) {
	   this.errorType = systemErrorType;
    }

@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandlerAdvice extends DefaultGlobalExceptionHandlerAdvice {
    @ExceptionHandler(value = {MyException .class})
    public Result MyException (MyException ex) {
        log.error(ex.getMessage());
        return Result.fail(ex.getErrorType());
    }
    @ExceptionHandler(value = {NotRoleException.class})
    public Result NotRoleException(NotRoleException nle) {
        // 打印堆栈，以供调试
        //nle.printStackTrace();
        String message = "该功能仅供"+nle.getRole()+"使用!";
        // 返回给前端
        return Result.fail("090017",message,null);
    }
}

    @PostMapping("/listQuestionVO")
    public Result listQuestionBankVO(@RequestBody QuestionBankQuery query){
        if (query.getPageNum()==null || query.getPageSize()==null){
            return Result.fail(QuestionnaireErrorType.PARAMETERISNULL_ERROR);
        }
        Result result = questionBankService.listQuestionBankVO(query);
        return result;
    }