java - 如何在Java spring-boot JPA中保存/发布来自JSON键值对的值数组

Question

我正在尝试通过 REST .POST 将对象保存到我的数据库中，当我从前端接收 JSON 对象时，来自 json 键的值之一在数组形式中有多个值。

JSON：

{ "supportedId": [ 2, 4, 1, 18592, 18594 ], "reportSubscriptionId": 100 }

我想用“reportSubscriptionId: 100”将每个“supportedId”作为自己的 INSERT/Unique 条目保存在数据库中，就像上面的 json 对象一样。

如何遍历数组并正确保存？任何帮助将不胜感激，谢谢！

 @RequestMapping(
      method = RequestMethod.POST
      )
@ResponseBody
public ApplicationUserSubscription createAppSubscription(@RequestBody ApplicationUserSubscription appUser) {

  return applicationUserSubscriptionRepository.save(appUser);

---

@Repository
public interface ApplicationUserSubscriptionRepository extends 
JpaRepository<ApplicationUserSubscription, Integer>  {}

Answer 1

创建请求类以映射输入并通过如下处理输入请求来创建实体，

实体：

public class ApplicationUserSubscription {
    @Id
    private Integer supportedId;
    private Integer reportSubscriptionId;
    //constructor getter setters

}

请求：

class ApplicationUserSubscriptionRequest {
     private List<Integer> supportedIds;
     private Integer reportSubscriptionId;
     //contructor getter setters
  }

控制器：

@RequestMapping(method = RequestMethod.POST)
public List<ApplicationUserSubscription> createAppSubscription(@RequestBody ApplicationUserSubscriptionRequest applicationUserSubscriptionRequest) {
List<ApplicationUserSubscription> subscriptions = applicationUserSubscriptionRequest.getSupportedIds().stream()
               .map(ele -> new ApplicationUserSubscription(ele, applicationUserSubscriptionRequest.getReportSubscriptionId()))
               .collect(Collectors.toList());
   return applicationUserSubscriptionRepository.saveAll(subscriptions);
}

存储库：

 @Repository
 public interface ApplicationUserSubscriptionRepository extends JpaRepository<ApplicationUserSubscription, Integer> {

  }

希望对你有帮助。