/**
 * 引數校驗統一處理
 */
@Log4j
@Aspect
@Component
public class ParamValidAspect {

    /**
     * 校驗錯誤處理
     * @param joinPoint
     * @param bindingResult
     * @return
     * @throws Throwable
     */
     // 切入點表示式，指向要執行校驗的方法
    @Around("execution(* com.**.controller.*.*(..)) && args(..,bindingResult)"
 
)
    public Object validateParam(ProceedingJoinPoint joinPoint, BindingResult bindingResult) throws Throwable {
        Object obj = null;
        if (bindingResult.hasErrors()) {
            // 有校驗錯誤
            obj = getErrors(bindingResult);
        } else {
            // 沒有錯誤方法繼續執行
            obj =
 
 joinPoint.proceed();
        }
        return obj;
    }


    /**
     * 解析校驗錯誤
     * @param bindingResult
     * @return
     */
    public ResponseEntity getErrors(BindingResult bindingResult) {
        List<String> errors = new ArrayList<>();
        List<ObjectError> allErrors =
 
 bindingResult.getAllErrors();
        allErrors.forEach(x -> {
            FieldError fieldError = (FieldError) x;
            String msg = x.getDefaultMessage();
            errors.add(fieldError.getField() + msg);
        });
        // 自己封裝返回錯誤的格式
        Result<Object> responseData = new Result<>(ResultEnum.EXCEPTION,"校驗錯誤", errors);
        ResponseEntity responseEntity = new ResponseEntity<Result>(responseData, HttpStatus.OK);
        return responseEntity;
    }

}