<?xml version="1.0" encoding="UTF-8"?>
<!-- spring配置文件的根元素，使用spring-beans-4.0.xsd语义约束 -->
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://www.springframework.org/schema/beans"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd"><!-- 配置监听器 --><bean class="com.lfy.listener.EmailNotifier"/>
</beans>

package com.lfy.listener;import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;import com.lfy.event.EmailEvent;/*** 容器事件的监听器类* @author lfy**/
public class EmailNotifier implements ApplicationListener {//该方法会在容器发生事件时自动触发
    @Overridepublic void onApplicationEvent(ApplicationEvent evt) {//只处理EmailEvent，模拟发送email通知if(evt instanceof EmailEvent) {EmailEvent emailEvent=(EmailEvent)evt;System.out.println("需要发送邮件的接收地址 "+emailEvent.getAddress());System.out.println("需要发送邮件的邮件正文 "+emailEvent.getText());}else {//其他事件不做任何处理System.out.println("其他事件:"+evt);}}
}

package com.lfy.event;import org.springframework.context.ApplicationEvent;/*** ApplicationContext的事件机制* 只要一个java类继承了ApplicationEvent基类，则该类的对象* 就可以作为spring容器的容器事件* @author lfy* */
public class EmailEvent extends ApplicationEvent {private String address;private String text;public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}public String getText() {return text;}public void setText(String text) {this.text = text;}public EmailEvent(Object source) {super(source);}//初始化全部成员变量的构造器public EmailEvent(Object source,String address,String text) {super(source);this.address=address;this.text=text;}}

package com.lfy.main;import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;import com.lfy.event.EmailEvent;public class SpringListenerTest {public static void main(String[] args) {//创建spring容器ApplicationContext ctx=new ClassPathXmlApplicationContext("beans.xml");EmailEvent ele=new EmailEvent("test","spring_test@163.com","this is a test");//发布容器事件
        ctx.publishEvent(ele);}}