springboot全局异常处理

@ControllerAdvice
@ResponseBody
@Slf4j
public class GlobalExceptionHandler {
    @ExceptionHandler(value = Exception.class)
    public Result exceptionHandler(HttpServletRequest request, Exception e) {
        Result result = new Result<>();
        //绑定异常是需要明确提示给用户的
       if (e instanceof MethodArgumentNotValidException) {
            MethodArgumentNotValidException methodArgumentNotValidException = (MethodArgumentNotValidException) e;
            log.error("create salt or password is error.", methodArgumentNotValidException);
            result.setCode(MemberEnum.SYSTEM_EXCEPTION.getCode());
            result.setMessage(Objects.requireNonNull(
                    methodArgumentNotValidException.getBindingResult().getFieldError()
            ).getDefaultMessage());
        } else if (e instanceof BindException) {
            BindException bindException = (BindException) e;
            log.error("create salt or password is error.", bindException);
            result.setCode(MemberEnum.SYSTEM_EXCEPTION.getCode());
            result.setMessage(Objects.requireNonNull(bindException.getFieldError()).getDefaultMessage());
        } else if (e instanceof NoSuchAlgorithmException) {
            log.error("create salt or password is error.", e);
            result.setMessage(e.getMessage());
            result.setCode((MemberEnum.SYSTEM_EXCEPTION.getCode()));
        } else {
            //不是上述异尝返回自定义code和message
            result.setMessage(MemberEnum.SYSTEM_EXCEPTION.getMessage());
            result.setCode(MemberEnum.SYSTEM_EXCEPTION.getCode());
        }
        return result;
    }
}