Java 发邮件

// 收件人电子邮箱
          //String to = "[e-mail]";

          // 发件人电子邮箱
          String from = "[e-mail]";

          // 指定发送邮件的主机为 localhost
          String host = "smtp.exmail.qq.com";

          // 获取系统属性
          Properties properties = System.getProperties();

          // 设置邮件服务器
          properties.setProperty("mail.smtp.host", host);

          properties.put("mail.smtp.auth", "true");
          // 获取默认session对象
          Session session = Session.getDefaultInstance(properties,new Authenticator(){
            public PasswordAuthentication getPasswordAuthentication()
            {
             return new PasswordAuthentication("[e-mail]", "kunpengkU1"); //发件人邮件用户名、密码
            }
           });

          try{
             // 创建默认的 MimeMessage 对象
             MimeMessage message = new MimeMessage(session);

             // Set From: 头部头字段
             message.setFrom(new InternetAddress(from));
             String [] to = {"[e-mail]","[e-mail]"};
             InternetAddress[] sendTo = new InternetAddress[to.length];  
             for (int i = 0; i < to.length; i++) {  
                 System.out.println("发送到:" + to[i]);  
                 sendTo[i] = new InternetAddress(to[i]);  
             }  

             // Set To: 头部头字段
             message.setRecipients(Message.RecipientType.TO,
                                      sendTo);

             // Set Subject: 头部头字段
             message.setSubject("This is the Subject Line!");

             // 设置消息体
             message.setText("This is actual message");

             // 发送消息
             Transport.send(message);
             System.out.println("Sent message successfully....from w3cschool.cc");
          }catch