javaMail发送邮件实例

背景：最近项目里有个实时发送邮件的功能，今天闲下来整理 一下，记录下来方便以后直接使用。

代码：

 package com.dzf.utils;

 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 import java.util.Properties;

 import javax.activation.DataHandler;
 import javax.activation.FileDataSource;
 import javax.mail.Message;
 import javax.mail.Session;
 import javax.mail.Transport;
 import javax.mail.internet.InternetAddress;
 import javax.mail.internet.MimeBodyPart;
 import javax.mail.internet.MimeMessage;
 import javax.mail.internet.MimeMultipart;

 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 /**
  *    邮件发送工具类
  * @author xxx
  * @date 2018年1月22日
  * @time 22:43:40
  */
 public class SendEmailUtil implements Runnable {
     private static Logger log =  LoggerFactory.getLogger(SendEmailUtil.class);
     private static Properties prop = new Properties();
     private List<String> toEmilList = new ArrayList<String>();//用于指定收件人的邮箱
     private List<String> ccEmilList = new ArrayList<String>();//用于抄送的收件人的邮箱
     public List<String> getCcEmilList() {
         return ccEmilList;
     }
     public void setCcEmilList(List<String> ccEmilList) {
         this.ccEmilList = ccEmilList;
     }
     public SendEmailUtil(List<String> toEmilList, List<String> ccEmilList) {
         super();
         this.toEmilList = toEmilList;
         this.ccEmilList = ccEmilList;
     }
     public List<String> getToEmilList() {
         return toEmilList;
     }
     public void setToEmilList(List<String> emilList) {
         this.toEmilList = emilList;
     }
     public SendEmailUtil(List<String> emilList) {
         super();
         this.toEmilList = emilList;
     }

     public SendEmailUtil() {
         super();
     }
     static{
         InputStream in = SendEmailUtil.class.getClassLoader().getResourceAsStream("emil_config.properties");
         try {
             prop.load(in);
         } catch (IOException e) {
             e.printStackTrace();
             log.error("读取配置失败，异常信息{}",e.toString());
             throw new RuntimeException("读取邮件配置文件失败");
         }
     }
     @Override
     public void run() {
         try {
             log.info("邮件创建开始了。。。。");
             //1.创建session
             Session session = Session.getInstance(prop);
             //2.开启session的debug模式，可以查看出email发送的情况
             session.setDebug(true);
             //3.连接发件服务器
             Transport trans = session.getTransport();
             trans.connect(prop.getProperty("mail.host"),prop.getProperty("mail.name"), prop.getProperty("mail.password"));
             //4.创建邮件
             Message message = createMessageMail(session);
             //发送邮件
             trans.sendMessage(message, message.getAllRecipients());
             trans.close();
         } catch (Exception e) {
             log.error("创建邮件发生异常：异常为{}",e.toString());
             e.printStackTrace();
         }
     }
     /**
      * 组装邮件
      * @param session
      */
     private Message createMessageMail(Session session)throws Exception {
         //创建邮件对象
         MimeMessage mimeMessage = new MimeMessage(session);
         //设置邮件的基本信息
         //发件人
         mimeMessage.setFrom(new InternetAddress(prop.getProperty("mail.from")));
         //收件人
         InternetAddress[] addressTo = new InternetAddress[toEmilList.size()];
         for(int i =0 ;i<toEmilList.size();i++){
             addressTo[i]=new InternetAddress(toEmilList.get(i));
         }
         //抄送人
         InternetAddress[] addressCc = new InternetAddress[ccEmilList.size()];
         for(int i =0 ;i<ccEmilList.size();i++){
             addressCc[i]=new InternetAddress(ccEmilList.get(i));
         }
         mimeMessage.setRecipients(Message.RecipientType.TO, addressTo);
         if(ccEmilList.size()>0){
             mimeMessage.setRecipients(Message.RecipientType.CC, addressCc);
         }
         //邮件标题
         mimeMessage.setSubject("私人定制-系统通知");

         //邮件正文
         MimeBodyPart bodyPart = new MimeBodyPart();
         SimpleDateFormat simple = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         Date date = new Date();
         String str = simple.format(date);
         bodyPart.setContent("亲爱得用户:<br/>&nbsp;&nbsp;&nbsp;&nbsp;<p>你好，你与"+str+"登录私人定制，如果不是本人登录，你的密码可能已经泄露！请立即前往官网修改密码。如果是你非别人登录，请你忽略此消息!谢谢！</p>","text/html;charset=utf-8");
         //TODO添加附件，图片之类
         MimeBodyPart attach = new MimeBodyPart();
         File file = new File("e:/generatorConfig.xml");
         DataHandler dh= new DataHandler(new FileDataSource(file));
         attach.setDataHandler(dh);

         //描述数据关系
         MimeMultipart multipart = new MimeMultipart();
         multipart.addBodyPart(bodyPart);
         multipart.addBodyPart(attach);
         mimeMessage.setContent(multipart);
         mimeMessage.saveChanges();
         return mimeMessage;
     }
     public static void main(String[] args) {
         List<String> toEmilList = new ArrayList<String>();
         toEmilList.add("xxxx23319@qq.com");
         toEmilList.add("xxxx39686@qq.com");
         List<String> ccEmilList = new ArrayList<String>();
         ccEmilList.add("xxxx79285@qq.com");
         SendEmailUtil email = new SendEmailUtil(toEmilList, ccEmilList);
         new Thread(email).start();//启动一个线程
     }
 }

配置文件 emil_config.properties

 mail.host=smtp.163.com
 mail.transport.protocol=smtp
 mail.smtp.auth=true
 mail.name=xxxxxx@163.com
 #shouquanma
 mail.password=xxxxxxx
 mail.from=xxxxxx@163.com

有关邮件发送遇到的问题我的另一篇随笔里有写  传送门：http://www.cnblogs.com/zfding/p/8324784.html