@RepositoryEventHandler 事件以 @RepositoryRestController 停止 [英] @RepositoryEventHandler events stop with @RepositoryRestController

问题描述

当我为实体创建 @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 SpringBoot 1.3.5) -- 这是一个错误，还是设计的?

When I create a @RepositoryRestController for an entity, the associated @RepositoryEventHandler methods are not triggered in Spring Data REST via Spring Boot 1.4.0.M3 (also Spring Boot 1.3.5) -- is this a bug, or as designed?

我有一个带有 @RepositoryEventHandler 的 Account 实体:

I have an Account entity with an @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);
    }
}

当我发布时它们应该触发:

which trigger as they should when I POST:

curl -H "Content-Type: application/json" -X POST 
  -d '{"name":"aaa", "owner":{"email":"aaa@1010","password":"snap"}}'
  http://localhost:8080/api/accounts

除非我添加一个 @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.

When I comment out the @RepositoryRestController annotation, the @RepositoryEventHandler methods trigger, again.

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?

It seems like these should behave independently since they operate a two different conceptual layers within Spring Data REST -- or am I misunderstanding something?

如果这是故意的，那就太不幸了——我必须自己实现所有 HTTP 方法来为具有 @RepositoryRestController 的任何实体创建事件.真的是这个意图吗?

If this is intentional, it's unfortunate -- I'll have to implement all HTTP methods to create the events myself for any entity with an @RepositoryRestController. Is that really the intent?

推荐答案

已实现.:-)

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

The methods defined in a @RepositoryRestController implementation replace the methods in the default RepositoryEntityController which publish @RepositoryEventHandler events.

但是很容易添加这些事件，使 @RepositoryRestControll 成为 ApplicationEventPublisherAware 实现并像默认的 RepositoryEntityController 实现一样发布事件:p>

But it's easy to add these events making the @RepositoryRestControll a ApplicationEventPublisherAware implementation and publishing the events like the default RepositoryEntityController implementation:

@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);
    }
}

你也可以在不创建类ApplicationEventPublisherAware的情况下注入发布者:

You can also inject the publisher without making the 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);
    }
}

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