问java-如何使用服务发送电子邮件？

EN

public void sendEmail(String recipient, String subject, String content,
                      String host, String port, final String senderaddress, 
                      final String password) {
    try {
        System.out.println("Please Wait, sending email...");

        /*Setup mail server */
        Properties props = new Properties();
        props.put("mail.smtp.host", host); //SMTP Host
        props.put("mail.smtp.port", port); //TLS Port
        props.put("mail.smtp.auth", "true"); //enable authentication
        props.put("mail.smtp.starttls.enable", "true"); //enable STARTTLS
        //create Authenticator object to pass in Session.getInstance argument
        Authenticator auth = new Authenticator() {
            //override the getPasswordAuthentication method
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(senderaddress, password);
            }
        };
        Session session = Session.getInstance(props, auth);
        session.setDebug(true);

        // Define message
        MimeMessage message = new MimeMessage(session);
        // Set From: header field of the header.
        message.setFrom(new InternetAddress(senderaddress));
        message.addRecipients(Message.RecipientType.TO,
                              InternetAddress.parse(recipient));
        // Set Subject: header field
        message.setSubject(subject);

        // Now set the actual message
        message.setText(content);
        try {
            Transport.send(message);
        } catch (AddressException addressException) {
            addressException.printStackTrace();
        }
    } catch (Exception e) {
        System.out.println(e.getMessage());
    }
}