如何.save/POST Java spring-boot JPA 中来自 JSON 键值对的值数组

Question

I am trying to save an object to my database through a REST .POST and when I am receiving the JSON object from the frontend one of the values from a json key has multiple values in an array form.

JSON:

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

I want to save each "supportedId" as its own INSERT/Unique entry in the database with "reportSubscriptionId: 100" like the json object above.

How do I iterate through the array and save this properly? Any help would be appreciated, thanks!

 @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

Create request class to map input and the create entity by processing input request as below,

Entity:

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

}

Request:

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

Controller:

@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);
}

Repository:

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

  }

Hope it helps.