Spring异步事件

1、发布事件

@Data
public class CustomEvent extends ApplicationEvent implements Serializable {
   private Boolean  ignore = Boolean.FALSE;
   ...
}

@Resource
private ApplicationEventPublisher   publisher;

CustomEvent customEvent = new CustomEvent();
customEvent.setIgnore(true);
publisher.publishEvent(customEvent);

　　

2、处理事件

@Component
public class MyEventListener {
    @Async
    @EventListener(condition = "#event.ignore")
    public void handleCustomEvent(CustomEvent event) {
        ...
    }
}

注意：　

1. 首先它是一个spring组件
2. 必须声明它是异步的
3. 声明它是一个监听器
4. 方法中传递的参数表明它是监听哪个事件
5. 从监听事件中取参