@RepositoryEventHandler事件以@RepositoryRestController停止

小编典典

@RepositoryEventHandler事件以@RepositoryRestController停止

spring-boot

当我@RepositoryRestController为实体创建时，@RepositoryEventHandler在Spring Data
REST中不会通过Spring Boot 1.4.0.M3（也是Spring Boot 1.3.5）触发关联的方法-这是Bug还是设计错误？

我有一个具有的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);
    }
}

在我发布时应触发：

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注释时，@RepositoryEventHandler方法再次触发。

由于它们在Spring Data REST中运行两个不同的概念层，因此它们似乎应该独立运行-还是我误会了什么？

如果这是故意的，那么很不幸-
我将必须实现所有HTTP方法，以便使用自己为任何实体创建事件@RepositoryRestController。这真的是目的吗？

阅读 382

2020-05-30

共1个答案

小编典典

它 已实现 。:-)

在@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。

但是添加这些事件使其@RepositoryRestControll成为ApplicationEventPublisherAware实现并像默认RepositoryEntityController实现一样发布事件很容易：

@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);
    }
}

您也可以在不上课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);
    }
}

2020-05-30