Spring Data Rest:未调用RepositoryEventHandler方法

Question

我正在尝试将Spring Data REST文档中描述的RepositoryEventHandler添加到下面显示的REST存储库:

@RepositoryRestResource(collectionResourceRel = "agents", path = "/agents")
public interface AgentRepository extends CrudRepository<Agent, Long> {
    // no implementation required; Spring Data will create a concrete Repository
}

我创建了一个AgentEventHandler:

@Component
@RepositoryEventHandler(Agent.class)
public class AgentEventHandler {

    /**
     * Called before {@link Agent} is persisted 
     * 
     * @param agent
     */
    @HandleBeforeSave
    public void handleBeforeSave(Agent agent) {

        System.out.println("Saving Agent " + agent.toString());

    }
}

并在@Configuration组件中声明它:

@Configuration
public class RepositoryConfiguration {

    /**
     * Declare an instance of the {@link AgentEventHandler}
     *
     * @return
     */
    @Bean
    AgentEventHandler agentEvenHandler() {

        return new AgentEventHandler();
    }
}

当我发布到REST资源时,实体会被持久化,但方法handleBeforeSave永远不会被调用.我错过了什么？

我正在使用:Spring Boot 1.1.5.RELEASE

Answer 1

有时候明显的错误会被忽视.

POST一个Spring Data REST资源,发出一个BeforeCreateEvent.要捕获此事件,必须使用@HandleBeforeCreate而不是@HandleBeforeSave(后者在PUT和PATCH HTTP调用上调用)来注释方法handleBeforeSave.

测试现在已成功通过我的(清理过的)演示应用程序.