Spring boot @RepositoryEventHandler事件以@RepositoryRestController停止

当我为一个实体创建一个

@RepositoryRestController

时，关联的

@RepositoryEventHandler

方法不会在Spring Data REST中通过Spring Boot 1.4.0.M3（也是Spring Boot 1.3.5）触发——这是一个bug还是按设计的

我有一个带有

@RepositoryEventHandler

的

账户

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);
    }
}

@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);
    }
}

当我发布以下内容时，他们应该触发哪一项：

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

：

@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);
    }
}

@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

看起来它们应该独立运行，因为它们在SpringDataREST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，那就很不幸了——我必须实现所有HTTP方法来为任何具有

@RepositoryRestController

的实体创建事件。这真的是目的吗？

已经实现了。：-）

@RepositoryRestController

实现中定义的方法将替换发布

@RepositoryEventHandler

事件的默认方法

但是添加这些事件很容易，使

@RepositoryRestControll

成为

ApplicationEventPublisherAware

实现，并像默认的

RepositoryEntityController

实现那样发布事件：

@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);
    }
}

您还可以插入发布服务器，而无需使类

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);
    }
}

---

“因为它们操作两个不同的层”，而不是根据“REST导出器发出的事件”。REST导出器，而不是数据库。这是Spring数据REST的一个功能，而不是Spring数据。是的，@zeroflagL、

@RepositoryEventHandler

和

@RepositoryRestController

都是Spring数据REST模块的一部分；上面我提到的是SDR中的两个不同的层次，而我认为这两个不同的概念层，@ ZoFrAGLL，显然SDR与您的解释一致。有关详细信息，请参见下面的解决方案。