java将组动态设置为Spring验证程序

Question

我正在实现一个RESTAPI，在这里我必须对请求体进行一些验证。基于Json中名为“type”的字段中定义的值，我想动态地将组设置为Spring Validator

通过查看文档，我找到的唯一解决方案是在方法签名处设置@Validated注释，并对要传递给它的组进行硬编码

我从javax中找到了一个使用验证器的替代解决方案。验证包，目前我的代码如下所示：

Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
    Set<ConstraintViolation<EnterpriseResource>> constraintViolationSet = new HashSet<>();
    if (isTypeEnterprise(enterpriseResource, EnterpriseTypeEnum.BUYER)) {
      constraintViolationSet = validator.validate(enterpriseResource, BuyerEnterprise.class);
    }
    if (isTypeEnterprise(enterpriseResource, EnterpriseTypeEnum.PROVIDER)) {
      constraintViolationSet = validator.validate(enterpriseResource, ProviderEnterprise.class);
    }
    if (!constraintViolationSet.isEmpty()) {
      log.info("=========================ERRORS: {}", constraintViolationSet.toString());
      throw new ConstraintViolationException(constraintViolationSet);
    }

是否有任何变通方法可以让我使用Spring本机验证程序实例获得相同的行为

Answer 1

下面是一个帮助器类，它使用spring MVC validator，并允许您以编程方式指定验证组

@Component
public class ValidatorTool {
   private static final Method method = ValidatorTool.class.getMethods()[0];

   @Autowired
   @Qualifier("mvcValidator")
   private org.springframework.validation.Validator validator;


   @SneakyThrows
   public void validate(Object object, Object... validationGroups) {
       DataBinder binder = new DataBinder(object);
       binder.addValidators(validator);
       binder.validate(validationGroups);
       BindingResult br = binder.getBindingResult();


       if (br.hasErrors()) {
          log.info("Validation of {} failed: {}", object.getClass(), br.getAllErrors());
          throw new MethodArgumentNotValidException(
                new MethodParameter(method, 0),
                br);
       }
   }
}