java ValidatorUtils 工具类 脱离@Validated认证限制，通过工具类调用也可进行 @NotBlank等注解使用，减少代码if非空正则等处理

一：工具类集成

public class ValidatorUtils {

    private static Validator validator;


    static {
        validator = Validation.buildDefaultValidatorFactory().getValidator();
    }

    
    public static String returnValidateEntity(Object object, Class... groups) throws ViedNotException {
        Set> constraintViolations = validator.validate(object, groups);
        StringBuilder msg = new StringBuilder();
        if (!constraintViolations.isEmpty()) {
            return msg.append(constraintViolations.iterator().next().getMessage()).append("；").toString();
        }
        return msg.toString();
    }

    
    public static void validateEntity(Object object, Class... groups) throws ViedNotException {
        Set> constraintViolations = validator.validate(object, groups);
        StringBuilder msg = new StringBuilder();
        if (!constraintViolations.isEmpty()) {
            throw new ViedNotException (msg.append(constraintViolations.iterator().next().getMessage()).append("；").toString());
        }
    }
}

二：调用方式