使用Spring JavaMail 定时发送邮件

包括: 一个配置文件, 一个继承了java.util.TimerTask 的类:TimerMail.java

一 . 配置文件中使用了两个类(还可以使用更多的 类,如:org.springframework.mail.MailMessage 邮件模板.
    1. org.springframework.scheduling.timer.TimerFactoryBean
2. org.springframework.scheduling.timer.ScheduledTimerTask

<beans>
<bean id="springSendMail" class="com.yidwo.app.springMail.SpringSendMail">
   <property name="mailSender">
    <ref bean="mailSender" />
   </property>
</bean>

    <!-- 定时任务 -->
<bean id="timerFactory" class="org.springframework.scheduling.timer.TimerFactoryBean">
   <property name="scheduledTimerTasks">
    <list>
     <ref bean="springTimerTask" />
    </list>
   </property>
</bean>
<bean id="springTimerTask" class="org.springframework.scheduling.timer.ScheduledTimerTask">
   <property name="timerTask">
    <ref bean="springSendMail" />
   </property>
   <property name="delay">
    <value>10000</value>
   </property>
   <property name="period">
    <value>3600000</value> <!-- 区间要定在一小时 3600000-->
   </property>
</bean>

    <!-- 邮件发送模板 -->
<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
   <property name="host" value="smtp解析地址" />
   <property name="port" value="25" />
   <property name="username" value="username" />
   <property name="password" value="password" />
   <!-- 如果要使用用户名和密码验证,这一步需要 -->
   <property name="javaMailProperties">
          <props>   
              <prop key="mail.smtp.auth">true</prop>
          </props>
        </property>
       
</bean>
</beans>

 

实现的类代码如下:

package com.yidwo.app.springMail;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.TimerTask;
import java.util.Locale;
import java.io.ByteArrayOutputStream;

import java.io.OutputStreamWriter;
import java.io.Writer;

import org.apache.log4j.Logger;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import javax.mail.internet.MimeMessage;
import org.springframework.mail.javamail.MimeMessageHelper;

import freemarker.template.Template;
import freemarker.template.Configuration;

/**
* 报表邮件发送类
*
* @author Yinghe Lai
*
*/
public class SpringSendMail extends TimerTask {

private static final Logger logger = Logger.getLogger(SpringSendMail.class);
public SpringSendMail() {}

private JavaMailSenderImpl mailSender;

public JavaMailSenderImpl getMailSender() {
   return mailSender;
}

public void setMailSender(JavaMailSenderImpl mailSender) {
   this.mailSender = mailSender;
}

public void run() {
  
   this.doEmail();
}
  

// 进行发送处理
private void doEmail() {
  
   MimeMessage mimeMessage = mailSender.createMimeMessage();
   try {
    MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true,"utf-8");

    helper.setTo("接收邮箱");   // 设置接收邮箱 邮箱必须符合邮箱格式

// 设置发送方信息,邮箱必须符合邮箱格式
    helper.setFrom("置发送邮箱", "发送人别名");

    helper.setSubject("设置标题");    // 设置标题
   
    // list 为其它程序传入, 用于动态填充模板.
    String fmStr = this.doFreemarkerMail(this.doFreemarkerMail(List list));
    helper.setText("这是您设置接收的报表邮件,请查收.",fmStr);

    mailSender.send(mimeMessage);
    helper = null;
    System.out.println("*** The required mail has been successfully sended ***");
              
   } catch (Exception e) {
    logger.debug("sendException: "+e.getMessage());
    e.printStackTrace();
   }
}
  

// 构造freemarker动态邮件

// 只要由其它方法传入一个List结构的数据就可.返回邮件内容
private String doFreemarkerMail(List list) throws Exception{
  
   Map maplist = new HashMap();
        maplist.put("mapList", list);
       
   Configuration freemarker_cfg = new Configuration();
   freemarker_cfg.setEncoding(Locale.getDefault(), "utf-8");      
  
   // 查找并加载freemarker模板文件.
     freemarker_cfg.setClassForTemplateLoading(this.getClass(), "\\com\\yidwo\\app\\springMail");
   Template freetemplate = freemarker_cfg.getTemplate("mailTemplate.ftl");
  
   ByteArrayOutputStream bos = new ByteArrayOutputStream();
        Writer out = new OutputStreamWriter(bos);     
        freetemplate.process(mapList, out);       
       
        String content = bos.toString();
        out.close();
        return content;
}

// 返回List 用于动态更新模板文件
private List returnList(){
    List list = new ArrayList();
    return list;
}

 

 

邮件开发中的异常:

1. javax.mail.MessagingException: Could not connect to SMTP host: www.d1888.com, port: 25, response: -1
   都是配置host时出错.要不没有此host的.要不服务解析时没有对应到邮件服务器.

2. org.springframework.mail.MailAuthenticationException: Authentication failed; nested exception is javax.mail.AuthenticationFailedException

   是邮箱用户名或密码出错导致.

3. com.sun.mail.smtp.SMTPSendFailedException: 503 input error.

   是setFrom时设置的邮箱出错,这里的设置要符合邮箱格式.([email protected]).