spring-boot - @RepositoryEventHandler 事件以 @RepositoryRestController 停止

当我为实体创建 @RepositoryRestController 时，相关的 @RepositoryEventHandler 方法不会通过 Spring Boot 1.4.0.M3(也是 Spring Boot 1.3.5)在 Spring Data REST 中触发——这是一个错误，还是设计的那样？

我有一个带有 Account 的 @RepositoryEventHandler 实体:

@Slf4j
@Component
@RepositoryEventHandler(Account.class)
public class AccountEventBridge {

    @HandleBeforeCreate
    public void handleBeforeCreate(Account account){
        log.info("Before create " + account);
    }

    @HandleAfterCreate
    public void handleAfterCreate(Account account){
        log.info("Created " + account);
    }
}

当我发布时，它们应该触发:

curl -H "Content-Type: application/json" -X POST
  -d '{"name":"aaa", "owner":{"email":"aaa@1010","password":"snap"}}'
  http://localhost:8080/api/accounts

除非我添加一个 @RepositoryRestController :

@RepositoryRestController
public class AccountRespositoryRestController {

    private final AccountRepository repository;

    @Autowired
    public AccountRespositoryRestController(AccountRepository repository) {
        this.repository = repository;
    }

    @RequestMapping(method = RequestMethod.POST,value = "/accounts")
    public @ResponseBody PersistentEntityResource post(
        @RequestBody Account account,
        PersistentEntityResourceAssembler assembler) {

        // ...
        Account entity = this.repository.save(account);
        return assembler.toResource(entity);
    }
}

当我注释掉 @RepositoryRestController 注释时，@RepositoryEventHandler 方法再次触发。

似乎这些应该独立运行，因为它们在 Spring Data REST 中操作两个不同的概念层——或者我误解了什么？

如果这是故意的，那很不幸——我将不得不实现所有 HTTP 方法来为任何具有 @RepositoryRestController 的实体创建事件。真的是这个意图吗？

最佳答案

它是作为实现。 :-)
@RepositoryRestController 实现中定义的方法替换了发布 @RepositoryEventHandler 事件的默认 RepositoryEntityController 中的方法。

但是很容易添加这些事件，使 @RepositoryRestControll 成为 ApplicationEventPublisherAware 实现并像默认的 RepositoryEntityController 实现一样发布事件:

@Slf4j
@RepositoryRestController
@AllArgConstructor
public class AccountRespositoryRestController
    implements ApplicationEventPublisherAware {

    private final AccountRepository repository;
    private ApplicationEventPublisher publisher;

    @Override
    public void setApplicationEventPublisher(
        ApplicationEventPublisher publisher) {
        this.publisher = publisher;
    }

    @RequestMapping(method = RequestMethod.POST,value = "/accounts")
    public @ResponseBody PersistentEntityResource post(
        @RequestBody Account account,
        PersistentEntityResourceAssembler assembler) {

        // ...
        publisher.publishEvent(new BeforeCreateEvent(account));
        Account entity = this.repository.save(account);
        publisher.publishEvent(new AfterCreateEvent(entity));

        return assembler.toResource(entity);
    }
}

您还可以在不创建类 ApplicationEventPublisherAware 的情况下注入(inject)发布者:

@Slf4j
@RepositoryRestController
@AllArgConstructor
public class AccountRespositoryRestController {

    private final AccountRepository repository;
    private final ApplicationEventPublisher publisher;

    @RequestMapping(method = RequestMethod.POST,value = "/accounts")
    public @ResponseBody PersistentEntityResource post(
        @RequestBody Account account,
        PersistentEntityResourceAssembler assembler) {

        // ...
        publisher.publishEvent(new BeforeCreateEvent(account));
        Account entity = this.repository.save(account);
        publisher.publishEvent(new AfterCreateEvent(entity));

        return assembler.toResource(entity);
    }
}

关于spring-boot - @RepositoryEventHandler 事件以 @RepositoryRestController 停止，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/37603231/