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