@RepositoryEventHandler 事件以@RepositoryRestController 停止

Question

当我为实体创建 @RepositoryRestController 时，关联的 @RepositoryEventHandler 方法不会在 Spring Data REST via Spring Boot 1.4.0.M3 中触发（还有 Spring Boot 1.3.5) -- 这是一个错误，还是 设计的 ?

我有一个 Account 实体 @RepositoryEventHandler:

@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 POST:

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。

似乎它们应该独立运行，因为它们在 Spring Data REST 中运行两个不同的概念层——或者我误解了什么？

如果这是故意的，那就太不幸了——我将不得不实现所有 HTTP 方法来为具有 @RepositoryRestController 的任何实体自己创建事件。真的是这个意思吗？

Answer 1

已实施。 :-)

@RepositoryRestController 实现中定义的方法替换默认 RepositoryEntityController 中发布 @RepositoryEventHandler 事件的方法。

但是添加这些事件很容易，使 @RepositoryRestControll 成为 ApplicationEventPublisherAware 实现并像默认 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);
    }
}

您也可以注入发布者而无需 class ApplicationEventPublisherAware:

@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);
    }
}

@RepositoryEventHandler 事件以@RepositoryRestController 停止

@RepositoryEventHandler events stop with @RepositoryRestController

java-8

spring-data

spring-data-rest

spring-boot