Springboot四种事件监听的实现方式详解

public class MyListener1 implements ApplicationListener<MyEvent>{
	Logger logger = Logger.getLogger(MyListener1.class);
	public void onApplicationEvent(MyEvent event){
		logger.info(String.format("%s监听到事件源：%s.", MyListener1.class.getName(), event.getSource()));
	}
}

@SpringBootApplication
public class LisenterApplication{
	public static void main(String[] args){
		ConfigurableApplicationContext context = SpringApplication.run(LisenterApplication.class, args);
		//装载监听
		context.addApplicationListener(new MyListener1());
	}
}

@Component
public class MyListener2 implements ApplicationListener<MyEvent>{
    Logger logger = Logger.getLogger(MyListener2.class);
    public void onApplicationEvent(MyEvent event) {
        logger.info(String.format("%s监听到事件源：%s.", MyListener2.class.getName(), event.getSource()));
    }
}

public class MyListener3 implements ApplicationListener<MyEvent>{
    Logger logger = Logger.getLogger(MyListener3.class);
    public void onApplicationEvent(MyEvent event){
        logger.info(String.format("%s监听到事件源：%s.", MyListener3.class.getName(), event.getSource()));
    }
}

context.listener.classes=com.listener.MyListener3

@Component
public class MyListener4{
    Logger logger = Logger.getLogger(MyListener4.class);
    @EventListener
    public void listener(MyEvent event){
        logger.info(String.format("%s监听到事件源：%s.", MyListener4.class.getName(), event.getSource()));
    }
}

public class MyEvent extends ApplicationEvent{
    public MyEvent(Object source)
    {
        super(source);
    }
}

@SpringBootApplication
public class LisenterApplication{
    @Autowired
    private ApplicationEventPublisher applicationEventPublisher;
    @Autowired
    private ApplicationContext applicationContext;
    public static void main(String[] args){
        ConfigurableApplicationContext context =         
        SpringApplication.run(LisenterApplication.class, args);
        //装载事件
        context.addApplicationListener(new MyListener1());
        //发布事件方式1
        context.publishEvent(new MyEvent("测试事件."));
        //发布事件方式2
        applicationEventPublisher.publishEvent(new MyEvent("测试事件."));
        //发布事件方式3
        applicationContext.publishEvent(new MyEvent("测试事件."));
    }
}