public class SendEmailDemo {

  public static void main(String[] args) throws Exception {

    //1. 登陆邮件客户端(创建会话session)
    Properties prop = new Properties();
    prop.setProperty("mail.transport.protocol", "smtp");  
    //创建了session会话
    Session session = Session.getDefaultInstance(prop);
    //设置debug模式来调试发送信息
    session.setDebug(true);
    //创建一封邮件对象
    Message message = new MimeMessage(session);
    //写信
    message.setSubject("欢迎访问我的CSDN博客主页！");
    //正文内容
    message.setContent("欢迎访问我的CSDN博客主页：http://blog.csdn.net/eson_15"
        + "，么么哒~", "text/html;charset=utf-8");
    //附件人地址
    message.setFrom(new InternetAddress("nishengwus@163.com"));
    Transport transport = session.getTransport();
    //链接邮件服务器的认证信息
    transport.connect("smtp.163.com", "nishengwus", "xxxxx密码");
    // 设置收件人地址，并发送邮件
    transport.sendMessage(message, new InternetAddress[]{new InternetAddress("694076359@qq.com")});
    transport.close();
  }
}

//抽取后的EmailUtil接口
public interface EmailUtil {

  public abstract void sendEmail(String emailAddress, String id);

}

//EmailUtilImpl实现类
@Component("emailUtil")
public class EmailUtilImpl implements EmailUtil {
  //参数接收顾客的邮箱地址和订单编号
  @Override
  public void sendEmail(String emailAddress, String id) {
    // 1. 登陆邮件客户端(创建会话session)
    Properties prop = new Properties();
    Session session = null;
    Message message = null;
    Transport transport = null;
    try {
      prop.setProperty("mail.transport.protocol", "smtp");
      // 创建了session会话
      session = Session.getDefaultInstance(prop);
      // 设置debug模式来调试发送信息
      session.setDebug(true);
      // 创建一封邮件对象
      message = new MimeMessage(session);
      // 写信
      message.setSubject("网上商城订单反馈");
      // 正文内容
      message.setContent("顾客您好，欢迎您光顾网上商城，订单" + id + "已支付成功！", "text/html;charset=utf-8");
      // 附件人地址
      message.setFrom(new InternetAddress("soft03_test@sina.com"));      
      transport = session.getTransport();
      // 链接邮件服务器的认证信息
      transport.connect("smtp.sina.com", "soft03_test", "soft03_test");

      // 设置收件人地址，并发送邮件
      transport.sendMessage(message, new InternetAddress[] { new InternetAddress(emailAddress) });
    } catch (Exception e) {
      e.printStackTrace();
      throw new RuntimeException(e);
    } finally {     
      try {
        transport.close();
      } catch (MessagingException e) {
        e.printStackTrace();
        throw new RuntimeException(e);
      }
    }
  }

@Controller("payAction")
@Scope("prototype")
public class PayAction extends BaseAction<Object> implements ParameterAware {

  //省略不相关的代码……

  public void backBank() {
    BackData backData = (BackData)model;
    System.out.println(model);
    boolean isOK = payService.checkBackData(backData);
    if(isOK) {
      //1. 更新订单状态,参数是自己根据数据库中的情况传进去的，用来测试
      forderService.updateStatusById(Integer.valueOf(201605006), 2);
      //2. 根据user邮箱地址，发送邮件
      String emailAddress = backData.getR8_MP().split(",")[0];
      emailUtil.sendEmail(emailAddress, backData.getR6_Order());
      //3. 发送手机短信，下一篇博客来介绍发送短信的功能
      System.out.println("----success!!----");
    } else {
      System.out.println("----false!!!----");
    }
  }
}