<dependency>
            <groupId>org.greenrobot</groupId>
            <artifactId>eventbus</artifactId>
            <version>3.1.1</version>
        </dependency>

@Component
@Slf4j
public class EventListener {
    @Subscribe
    public void onMessageEvent(String event) {
        log.info("Subscribe message:{}", event);
    }
}

@Configuration
public class EventBusConfig {

    @Bean
    public EventBus eventBus(){
        return new EventBus();
    }

}

@Component
@Slf4j
public class EventHandler {

    @Autowired
    private EventBus eventBus;

    @Autowired
    private EventListener eventListener;

    @PostConstruct
    public void init() {
        eventBus.register(eventListener);
    }

    @PreDestroy
    public void destroy() {
        eventBus.unregister(eventListener);
    }

    public void eventPost(){
        eventBus.post("test");
        log.info("post event");
    }
}

@RunWith(SpringRunner.class)
@SpringBootTest
public class EventBusTest {

    @Autowired
    private EventHandler eventHandler;

    @Test
    public void postEvent(){
        eventHandler.eventPost();
    }

}

2019-11-01 22:33:24.657  INFO 6656 --- [           main] com.sww.bizhi.eventbus.EventListener     : Subscribe message:test
2019-11-01 22:33:24.671  INFO 6656 --- [           main] com.sww.bizhi.eventbus.EventHandler      : post event

@Data
@Builder
public class MessageEvent {

    private Integer id;
    private String name;

}

public void eventPost(){
        eventBus.post(MessageEvent.builder().id(1).name("test").build());
        log.info("post event");
    }

@Subscribe
    public void onMessageEvent(MessageEvent event) {
        log.info("Subscribe message:{}", event);
    }

2019-11-01 22:53:24.273  INFO 2252 --- [           main] com.sww.bizhi.eventbus.EventListener     : Subscribe message:MessageEvent(id=1, name=test)
2019-11-01 22:53:24.278  INFO 2252 --- [           main] com.sww.bizhi.eventbus.EventHandler      : post event