sendEmail.java

sendEmail.java

public static void sendEmail(String emailString, String subject, String message, File file) {
    String[] emails = StringUtils.split(emailString, ",");

    Properties props = System.getProperties();
    props.setProperty("mail.smtp.host", "localhost");

    Session session = Session.getDefaultInstance(props);
    MimeMessage msg = new MimeMessage(session);

    try {
        msg.setFrom(new InternetAddress("from@localhost", "from"));
        for (String email : emails) {
            msg.addRecipient(Message.RecipientType.TO, new InternetAddress(email, "user"));
        }
        msg.addRecipient(Message.RecipientType.CC, new InternetAddress("admin@localhost", "cc"));
        msg.setSubject(subject);

        MimeBodyPart messageBodyPart = new MimeBodyPart();
        messageBodyPart.setContent(message, "text/plain; charset=UTF-8");
        Multipart multipart = new MimeMultipart();
        multipart.addBodyPart(messageBodyPart);

        if(file != null) {
            messageBodyPart = new MimeBodyPart();
            DataSource source = new FileDataSource(file);
            messageBodyPart.setDataHandler(new DataHandler(source));
            messageBodyPart.setFileName(FILENAME);

            multipart.addBodyPart(messageBodyPart);
        }

        msg.setContent(multipart);
        Transport.send(msg);
    } catch (Exception e) {
        e.printStackTrace();
    }
}