spring @EventListener 事件与监听-蒲公英云

spring @EventListener 事件与监听

た入场券 2023-06-14 11:58 88阅读 0赞

1、自定义Application Event

public class MyEvent extends ApplicationEvent {
    private static final long serialVersionUID = 1L;
    private String data;
    public MyEvent(Object source, String data) {
        super(source);
        this.data = data;
    }
    public String getData() {
        return data;
    }
    public void setData(String data) {
        this.data = data;
    }
}

2、自定义监听

@Component
public class MyListener {
    private Logger logger = LoggerFactory.getLogger(getClass());
    @EventListener // 注意此处
    public void handleDemoEvent(MyEvent event) {
        logger.info("发布的data为:{}", event.getData());
    }
}

3、测试

@RunWith(value = SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = Application.class)
public class ListenerTest implements ApplicationContextAware {
    private static Logger logger = LoggerFactory.getLogger(ListenerTest.class);
    private ApplicationContext context = null;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.context = applicationContext;
    }
    @Test
    public void listener() {
        context.publishEvent(new MyEvent(this, "测试"));
    }
}