在spring利用javamail，quartz定时发送邮件

在web开发中，我们经常需要定时完成一些功能。比如定义统计报表啊，统计用户排名等等。利用spring就可以轻松地做到这些任务。下面我就以定时发送邮件来来展示如何利用spring定时发送邮件，以及spring对JavaMail的简化。
MailService.java类

package com.open.quartz;
import org.springframework.mail.MailException;
import org.springframework.mail.MailSender;
import org.springframework.mail.SimpleMailMessage;
public class MailService {
    private MailSender mailSender;
    private SimpleMailMessage mailMessage;//邮件模板
    public void sendMail() {
          System.out.println("-----------发送邮件!---------");
          SimpleMailMessage msg=new SimpleMailMessage(this.mailMessage);
          msg.setText("this is a test mail");
        try {
              mailSender.send(msg);
          } catch (MailException e) {
              e.printStackTrace();
          }
          System.out.println("-----------发送成功!---------");
      }
     //省略set,get方法
}

在web.xml里添加以下代码

< listener >
         < listener-class > org.springframework.web.context.ContextLoaderListener listener-class >
     listener >

在WEB-INF目录下添加applicationContext.xml文件

< beans >
     < bean id ="mailSender"
          class ="org.springframework.mail.javamail.JavaMailSenderImpl" >
         < property name ="host" value ="smtp.163.com" />
            
         < property name ="username" value ="填入用户名" />
         < property name ="password" value ="填入密码" />
         < property name ="javaMailProperties" >
             < props >
                 < prop key ="mail.smtp.auth" > true prop >
             props >
         property >
     bean >
     
     < bean id ="mailMessage" class ="org.springframework.mail.SimpleMailMessage" >
         < property name ="to" value ="[email protected]" />
         < property name ="from" value ="[email protected]" />
         < property name ="subject" value ="test" />
     bean >
        <bean id="ms" class="com.open.quartz.MailService" autowire="byName"/>
     < bean id ="reportJob"
          class ="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean" >
         < property name ="targetObject" ref ="ms" />
         < property name ="targetMethod" value ="sendMail" />
     bean >
        
     < bean id ="simpleTrigger"
          class ="org.springframework.scheduling.quartz.SimpleTriggerBean" >
         < property name ="jobDetail" ref ="reportJob" />
         < property name ="startDelay" value ="1" />     在web启动多少毫秒后启动任务
         < property name ="repeatInterval" value ="100000000" /> 表示没隔多少毫秒启动
     bean >
        
     < bean id ="cronTrigger"
          class ="org.springframework.scheduling.quartz.CronTriggerBean" >
         < property name ="jobDetail" ref ="reportJob" />
         < property name ="cronExpression" value ="0 0 6 * * ?" /> 指明每天早上6点启动任务,表达式的解释见下篇文章
     bean >
     < bean class ="org.springframework.scheduling.quartz.SchedulerFactoryBean" >
         < property name ="triggers" >
             < list >
                 < ref bean ="simpleTrigger" />
             list >
         property >
     bean >
bean >

涉及的jar包有:spring.jar,javamail.jar,activation.jar,quartz.jar