用于列表验证的自定义ConstraintValidator

Question

Spring靴2.0.3。发布，javax。验证2.0.1。最后一个选项被使用。

我需要验证进入控制器的请求：

@RestController
@CrossOrigin
@RequestMapping("/quotas/")
@AllArgsConstructor
@Slf4j
public class QuotasController {

    private QuotasService quotasService;

    @ApiOperation("Post quotas")
    @PostMapping(value = "/quotas", produces = MediaType.APPLICATION_JSON_VALUE)
    public void quotas(@Valid @RequestBody List<Quota> quotaList){
        quotasService.insertQuotas(quotaList);
    }
}

这叫做服务：

@AllArgsConstructor
@Service
@Slf4j
public class QuotasService {
    private QuotasRepository quotasRepository;

    public void insertQuotas(List<Quota> quotaList) {
        quotasRepository.saveAll(quotaList);
    }
}

将对象保存到MongoRepository方法

我也有一个自定义注释：

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = 
SumOfValuesEqualsToOneHundredValidator.class)
public @interface SumOfValuesEqualsToOneHundred {
    String message() default "Sum of fields doesn't equal to 100";
    Class<?>[] groups() default {};
    Class<? extends Payload>[] payload() default {};
}

通过以下方式验证：

public class SumOfValuesEqualsToOneHundredValidator implements 
ConstraintValidator<SumOfValuesEqualsToOneHundred, List<QuotaPayment>> 
{
    @Override
    public void initialize(SumOfValuesEqualsToOneHundred sumOfValuesEqualsToOneHundred) {
        //nothing to do
    }

    @Override
    public boolean isValid(List<QuotaPayment> quotaPaymentList, 
    ConstraintValidatorContext context) {
         return quotaPaymentList
                .stream()
                .mapToDouble(QuotaPayment::getValue)
                .sum() == 100;
    }
}

我的目标是验证DTO：

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Quota {
    @Id
    private Integer storeId;
    @JsonProperty("quotas")
    private List<QuotaDelivery> quotaDeliveryList;
}

具体来说QuotaDelivery对象里面：

@Data
@NoArgsConstructor
@AllArgsConstructor
public class QuotaDelivery {
    QuotaDeliveryTypeEnum type;
    @JsonProperty("quotasForPaymentTypes")
    @SumOfValuesEqualsToOneHundred
    List<QuotaPayment> quotaPaymentList;
}

相对于QuotaPayments'values的总和等于100。

换句话说，只有那些QuotaPayment中的QuotaDeliveryfromQuotaPayment中的值总共为100的QuotaPayment对象才是有效的。

问题是前面提到的sumofValueSequalTooneHundredValidator被忽略。我的意思是调试模式显示控件从不执行public boolean isValid（列表

我错过了什么？

感谢任何帮助。




Answer 1

使用@Valid in list和@Validated in controller类：

@RestController
@CrossOrigin
@RequestMapping("/quotas/")
@AllArgsConstructor
@Slf4j
@Validated
public class QuotasController {

private QuotasService quotasService;

@ApiOperation("Post quotas")
@PostMapping(value = "/quotas", produces = MediaType.APPLICATION_JSON_VALUE)
public void quotas(@Valid @RequestBody List<Quota> quotaList){
    quotasService.insertQuotas(quotaList);
}

}

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Quota {
    @Id
    private Integer storeId;
    @JsonProperty("quotas")
    private List< @Valid QuotaDelivery> quotaDeliveryList;
}

List< @Valid QuotaPayment> quotaPaymentList;