发送一封简单的邮件

　　　　 

       MimeMessage message = null;
        final Properties props = new Properties();
          props.put("mail.smtp.auth", "true");
          props.put("mail.smtp.socketFactory.fallback", "true");
          props.put("mail.smtp.host", host);
          props.put("mail.smtp.port", port);
          props.put("mail.user", user);
          props.put("mail.password", pw);
          Authenticator authenticator = new Authenticator() {
              protected PasswordAuthentication getPasswordAuthentication(){
                  String userName = props.getProperty("mail.user");
                  String password = props.getProperty("mail.password");
                  return new PasswordAuthentication(userName, password);
              }
          };
          Session mailSession = Session.getInstance(props, authenticator);
          
          message = new MimeMessage(mailSession);
          message.setFrom(new InternetAddress("邮箱地址", "邮箱名称", "UTF-8"));
        
        
        
        
        //1、是否需要回执--非必须
        message.setHeader("Disposition-Notification-To", "");
        //收件人地址
        message.setRecipient(MimeMessage.RecipientType.TO, new  InternetAddress("[email protected]", "user_to", "UTF-8"));
        //主题
        message.setSubject("test02");
        //内容
        message.setContent("淘券网", "text/html;charset=UTF-8");
        //显示发送时间
        message.setSentDate(new Date());
        //保存更改
        message.saveChanges();
        //输出eml文件
        OutputStream out = new FileOutputStream("D://myemail.eml");
        
        message.writeTo(out);
        
        
        out.flush();
        
        out.close();
        //发送邮件
        Transport.send(message);
        System.out.println("邮件发送成功");