@RepositoryEventHandler事件使用@RepositoryRestController停止

Question

当我@RepositoryRestController为一个实体创建一个实体时,相关的@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bug,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);
    }
}

在POST时它会触发它们:

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注释时,@RepositoryEventHandler方法再次触发.

看起来这些应该独立运行,因为它们在Spring Data REST中运行两个不同的概念层 - 或者我是否误解了某些东西？

如果这是故意的,那是不幸的 - 我将不得不实现所有HTTP方法来为任何具有的实体自己创建事件@RepositoryRestController.这真的是意图吗？

Answer 1

这是实施的.:-)

@RepositoryRestController实现中定义的方法替换了发布事件的默认RepositoryEntityController中的方法@RepositoryEventHandler.

但它很容易地添加这些事件使得@RepositoryRestControll一个ApplicationEventPublisherAware执行和发布,如违约的事件RepositoryEntityController实现:

@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);
    }
}

您也可以在不进行课程的情况下注入发布者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);
    }
}