学习了：http://www.cnblogs.com/tptptptp/p/5874538.html

使用java mail jar包：http://www.jb51.net/softs/545313.html 

package com.stono.test;import java.util.Properties;import javax.mail.Message;import javax.mail.MessagingException;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.AddressException;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;public class TestMail {    public static void main(String[] args) throws Exception {        Properties prop = new Properties();        prop.put("mail.host", "smtp.163.com");        prop.put("mail.transport.protocol", "smtp");        prop.put("mail.smtp.auth", true);        // 使用java发送邮件5步骤        // 1.创建sesssion        Session session = Session.getInstance(prop);        // 开启session的调试模式，可以查看当前邮件发送状态        session.setDebug(true);        // 2.通过session获取Transport对象（发送邮件的核心API）        Transport ts = session.getTransport();        // 3.通过邮件用户名密码链接        ts.connect("此处应为用户名", "此处应为授权码");        // 4.创建邮件        Message msg = createSimpleMail(session);        // 5.发送电子邮件        ts.sendMessage(msg, msg.getAllRecipients());    }    public static MimeMessage createSimpleMail(Session session) throws AddressException, MessagingException {        // 创建邮件对象        MimeMessage mm = new MimeMessage(session);        // 设置发件人        mm.setFrom(new InternetAddress("发件人@163.com"));        // 设置收件人        mm.setRecipient(Message.RecipientType.TO, new InternetAddress("收件人@163.com"));        // 设置抄送人        mm.setRecipient(Message.RecipientType.CC, new InternetAddress("抄送人@163.com"));        mm.setSubject("第一封JAVA邮件！");        mm.setContent("咱们开会把", "text/html;charset=gbk");        return mm;    }}