spring-boot - @RepositoryEventHandler 事件以 @RepositoryRestController 停止

Question

当我创建 @RepositoryRestController对于实体，关联的 @RepositoryEventHandler方法不是通过 Spring Boot 1.4.0.M3(也是 Spring Boot 1.3.5)在 Spring Data REST 中触发的——这是一个错误，还是设计的？

我有一个 Account具有 @RepositoryEventHandler 的实体:

@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 @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， @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——还是我误解了什么？

如果这是故意的，那就太不幸了——我必须实现所有 HTTP 方法来自己为任何具有 @RepositoryRestController 的实体创建事件。 .真的是这个意图吗？

Answer 1

它已实现。 :-)
@RepositoryRestController 中定义的方法实现替换默认RepositoryEntityController中的方法发布@RepositoryEventHandler事件。

但是添加这些事件很容易使 @RepositoryRestControll一个 ApplicationEventPublisherAware实现和发布事件，如默认 RepositoryEntityController执行:

@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);
    }
}

您也可以在不创建类 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);
    }
}