spring中EventListener的使用方式

public class PushEvent extends ApplicationEvent {

    private String msg;

    public PushEvent(Object source, String msg) {
        super(source);
        this.msg = msg;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }
}

@Slf4j
@Service
public class EventListenerDemo {

   @EventListener
   public void eventListener(PushEvent event) {
       log.info(this.getClass().getSimpleName() + "监听到数据：" + event.getMsg());
   }
}

@Slf4j
@Service
public class EventListenerDemo1 {

    @EventListener
    public void eventListener(PushEvent event){
        log.info(this.getClass().getSimpleName()+"监听到数据："+event.getMsg());
    }
}

@Slf4j
@SpringBootTest
class DemoApplicationTests {

    @Autowired
    private ApplicationContext applicationContext;

    @Test
    public void publish() {
        String msg = "测试数据";
        log.info("发布信息：" + msg);
        ApplicationEvent event = new PushEvent(this, msg);
        applicationContext.publishEvent(event);
    }
}