@Valid 註解校驗數字轉化異常提示消息更改

        當項目中使用 @Valid 對錶單進行校驗，對Integer 類型校驗的最小值、最大值等都無法避免對該類型輸入字符串的錯誤提示，即向前端返回數字轉化異常的明文代碼，對用戶的顯示特別不友好。

        通過設置全局異常捕獲機制，將 BindException進行捕獲，若異常類型爲數字轉化異常，即提示該字段格式不正確。

    @ExceptionHandler(value = ConstraintViolationException.class)
    public ServerResponse ConstraintViolationExceptionHandler(ConstraintViolationException ex) {
        List<String> msgList =  ex.getConstraintViolations()
                .stream()
                .map(ConstraintViolation::getMessage)
                .collect(Collectors.toList());
        return ServerResponse.createByErrorMessage(msgList.toString());
    }

    @ExceptionHandler(value = BindException.class)
    public ServerResponse BindExceptionHandler(BindException ex) {
        String msgList =  ex.getFieldErrors()
                .stream()
                .map(fieldError -> {
                    Field field = ReflectionUtils.findField(FieldError.class, "source");
                    field.setAccessible(true);
                    Object source = ReflectionUtils.getField(field, fieldError);
                    if (source instanceof TypeMismatchException) {
                        TypeMismatchException mismatchException = (TypeMismatchException) source;
                        source = mismatchException.getPropertyChangeEvent().getSource();
                        if (mismatchException.getCause() instanceof NumberFormatException) {
                            field = ReflectionUtils.findField(source.getClass(), fieldError.getField());
                            ApiModelProperty apiModelProperty = field.getAnnotation(ApiModelProperty.class);
                            return apiModelProperty == null?"":apiModelProperty.value() + "格式不正確";
                        }
                    }
                    return fieldError.getDefaultMessage();
                }
                ).collect(Collectors.joining("、","您填寫的信息共有"+ex.getFieldErrors().size()+"項錯誤：",""));
        return ServerResponse.createByErrorMessage(msgList);
    }