Hibernate Validator 手動發起驗證

在 SpringBoot 開發 web 項目的時候, 表單參數驗證, 常用 Hibernate Validator

需要在參數類的屬性上添加註解 @NotNull , @Max, @Min 等, 然後再 Controller 方法的請求參數前添加註解 @Valid 就行了, 就可以進行參數自動驗證了

然而, 在某些時候我們需要手動發起驗證, 可以參考下面這個工具類

public class PropertyValidateUtil {

	private static final Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
	
	public static <T> void validate(T object) {
		Set<ConstraintViolation<T>> constraintViolationSet = validator.validate(object, Default.class);
		if(constraintViolationSet.size() == 0) {
			return;
		}
		StringBuffer message = new StringBuffer("");
		for (ConstraintViolation<T> constraintViolation : constraintViolationSet) {
			String prefix = message.toString().equals("") ? "" : ", ";
			message.append(prefix).append(constraintViolation.getPropertyPath().toString()).append(" ").append(constraintViolation.getMessage());
		}
		throw new CustomException(ResultEnum.PARAMETER_VALIDATE_FAIL, message.toString());
	}

	public static <T> void validate(T object, Class<?>... groups) {
		Set<ConstraintViolation<T>> constraintViolationSet = validator.validate(object, groups);
		if(constraintViolationSet.size() == 0) {
			return;
		}
		StringBuffer message = new StringBuffer("");
		for (ConstraintViolation<T> constraintViolation : constraintViolationSet) {
			String prefix = message.toString().equals("") ? "" : ", ";
			message.append(prefix).append(constraintViolation.getPropertyPath().toString()).append(" ").append(constraintViolation.getMessage());
		}
		throw new CustomException(ResultEnum.PARAMETER_VALIDATE_FAIL, message.toString());
	}
}

group 可以創建幾個接口類, 用於標記 Bean 中的不同組驗證的屬性, 例如:

@NotBlank(groups = {ValidateGroupOne.class})
private String provinceMdmCode;