Spring 事件机制

 1 package org.zln.module_chapter2.event;
 2 
 3 import org.springframework.context.ApplicationContext;
 4 import org.springframework.context.event.ApplicationContextEvent;
 5 
 6 /**
 7  * 发送邮件事件类
 8  * Created by sherry on 000005/7/5 22:10.
 9  */
10 
11 public class MailSendEvent extends ApplicationContextEvent {
12 
13     private String to;
14     public MailSendEvent(ApplicationContext source,String to) {
15         super(source);
16         this.to = to;
17     }
18 
19     public String getTo(){
20         return this.to;
21     }
22 }

 1 package org.zln.module_chapter2.event;
 2 
 3 import org.springframework.context.ApplicationListener;
 4 
 5 /**
 6  * 邮件发送 监听类
 7  * Created by sherry on 000005/7/5 22:12.
 8  */
 9 
10 public class MailSendListener implements ApplicationListener<MailSendEvent> {
11 
12     /*对MailSendEvent进行处理*/
13     @Override
14     public void onApplicationEvent(MailSendEvent mailSendEvent) {
15         MailSendEvent mailSendEvent1 = mailSendEvent;
16         System.out.println("MailSendListener:向"+mailSendEvent1.getTo()+"发送一封邮件");
17     }
18 }
19     

 1 package org.zln.module_chapter2.event;
 2 
 3 import org.springframework.beans.BeansException;
 4 import org.springframework.context.ApplicationContext;
 5 import org.springframework.context.ApplicationContextAware;
 6 
 7 /**
 8  * 邮件发送类
 9  * Created by sherry on 000005/7/5 22:15.
10  */
11 public class MailSender implements ApplicationContextAware{
12     private ApplicationContext applicationContext;
13     @Override
14     public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
15         this.applicationContext = applicationContext;
16     }
17 
18     public void sendMail(String to){
19         System.out.println("MailSender:模拟发送邮件");
20         MailSendEvent mailSendEvent = new MailSendEvent(applicationContext,to);
21         /*向容器中所有事件监听器发送事件*/
22         applicationContext.publishEvent(mailSendEvent);
23     }
24 }

package org.zln.module_chapter2.event;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import static org.junit.Assert.*;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"/org/zln/cfg/spring/applicationContext.xml"})/*启动Spring容器*/
public class MailSenderTest {

    @Autowired
    @Qualifier("mailSender")
    private MailSender mailSender;

    @Test
    public void testSetApplicationContext() throws Exception {

    }

    @Test
    public void testSendMail() throws Exception {
        mailSender.sendMail("nbzlnzlq@126.com");
    }
}