SpringBoot事件监听

　　springBoot事件监听流程

　　1 自定义事件,一般是继承ApplicationEvent抽象类

/**
 * 定义事件
 **/

public class MyApplicationEvent extends ApplicationEvent {

    private static final long serialVersionUID = 787751246882182041L;

    public MyApplicationEvent(Object source) {
        super(source);
    }

}

　　2 自定义监听器,一般是实现ApplicationListen接口

/**
 * 自定义监听器
 **/
@Component
public class MyApplicationListener implements ApplicationListener<MyApplicationEvent>{
    @Override
    public void onApplicationEvent(MyApplicationEvent event) {
        System.out.println("接收事件:"+event.getClass());
    }
}

　　3 发布事件

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
public class App {
    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(App.class, args);
        //发布事件
        context.publishEvent(new MyApplicationEvent(new Object()));
        context.close();
    }
}

这就是SpringBoot中最简单的一个事件监听.