如何发邮件

private static String smtpServer = "mail.xxxx.com";
private static String smtpAuth = "true";
private static String smtpUser = "[e-mail]";
private static String smtpPassword = "xxxxxxx";
private static String From = "[e-mail]";

private static void sendMessage(String to,
                                   String subject, String messageText)
            throws MessagingException,java.io.UnsupportedEncodingException {

        // Step 1:  Configure the mail session
        //System.out.println("Configuring mail session for: " + smtpServer);
        java.util.Properties props = new java.util.Properties();
        props.setProperty("mail.smtp.auth", smtpAuth);//           props.setProperty("mail.smtp.host", smtpServer);//
        props.put("mail.transport.protocol", "smtp");
        Session mailSession = Session.getDefaultInstance(props);
        mailSession.setDebug(false);//
        // Step 2:  Construct the message
        //System.out.println("Constructing message -  from=" + From + "  to=" + to);
        InternetAddress fromAddress = new InternetAddress(From);
        InternetAddress toAddress = new InternetAddress(to);

        MimeMessage testMessage = new MimeMessage(mailSession);
        testMessage.setFrom(fromAddress);
        testMessage.addRecipient(javax.mail.Message.RecipientType.TO, toAddress);
        testMessage.setSentDate(new java.util.Date());
        testMessage.setSubject(MimeUtility.encodeText(subject,"GBK","B"));

        testMessage.setContent(messageText, "text/html;charset=GBK");
        System.out.println("Message constructed");

        // Step 3:  Now send the message
        Transport transport = mailSession.getTransport("smtp");
        transport.connect(smtpServer, smtpUser, smtpPassword);
        transport.sendMessage(testMessage, testMessage.getAllRecipients());
        transport.close();


        System.out.println("Message sent!");
}

我在zx1z的项目中MailUtil.java类中写。