MimeBodyPart bodyPart = new MimeBodyPart()；
if (sMailBody != null) {
    bodyPart.setContent(sMailBody.toString(),
        "text/html;charset=utf-8");                
    }
if (null != sAttachPath) {
    File file = new File(sAttachPath);
    FileDataSource fds = new FileDataSource(file);
    bodyPart.setDataHandler(new DataHandler(fds));
    bodyPart.setFileName(fds.getName());
    mp.addBodyPart(bodyPart);
}