spring监听器的简单使用

import org.springframework.context.ApplicationContext;
import org.springframework.context.event.ApplicationContextEvent;

public class MyEvent extends ApplicationContextEvent {
    public MyEvent(ApplicationContext source) {
        super(source);
        System.out.println("MyEvent 事件执行了。。。"+source.toString());
    }
    public void out(String name)
    {
        System.out.println("MyEvent 事件执行了 name :"+name);
    }
}

import org.springframework.context.ApplicationListener;

public class MyListenerA implements ApplicationListener<MyEvent> {
    @Override
    public void onApplicationEvent(MyEvent myEvent) {
        System.out.println("MyListenerA 执行了");
        myEvent.out("wangmingyuan not love");
    }
}

import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;

@Configuration
@Import(value = {MyEvent.class,MyListenerA.class,MyPublisher.class})
public class Config {
}

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationEvent;

public class MyPublisher implements ApplicationContextAware {
    public ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext=applicationContext;
    }

    public void publisherEvent(ApplicationEvent event)
    {
        System.out.println("-----发送事件-----"+event);
        applicationContext.publishEvent(event);
    }
}

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Test {
    public static void main(String[] args) {
        AnnotationConfigApplicationContext context=new AnnotationConfigApplicationContext(Config.class);
        MyPublisher myPublisher = context.getBean(MyPublisher.class);
        MyEvent myEvent = context.getBean(MyEvent.class);
        myPublisher.publisherEvent(myEvent);
    }
}

11:34:56.652 [main] DEBUG org.springframework.context.annotation.AnnotationConfigApplicationContext - Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@3b084709
11:34:56.695 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
11:34:56.952 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerProcessor'
11:34:56.955 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerFactory'
11:34:56.959 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
11:34:56.961 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalCommonAnnotationProcessor'
11:34:57.042 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'config'
11:34:57.048 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'com.raise3d.bye.listener.MyEvent'
11:34:57.117 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Autowiring by type from bean name 'com.raise3d.bye.listener.MyEvent' via constructor to bean named 'org.springframework.context.annotation.AnnotationConfigApplicationContext@3b084709'
MyEvent 事件执行了。。。org.springframework.context.annotation.AnnotationConfigApplicationContext@3b084709, started on Mon Nov 25 11:34:56 CST 2019
11:34:57.121 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'com.raise3d.bye.listener.MyListenerA'
11:34:57.135 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'com.raise3d.bye.listener.MyPublisher'
-----发送事件-----com.raise3d.bye.listener.MyEvent[source=org.springframework.context.annotation.AnnotationConfigApplicationContext@3b084709, started on Mon Nov 25 11:34:56 CST 2019]
MyListenerA 执行了
MyEvent 事件执行了 name :wangmingyuan not love

原文地址：https://www.cnblogs.com/mingyuan1031/p/11926719.html