我在使用JavaMail發(fā)送帶附件的郵件時(shí)候，每次到了Transport.sendMessage()這一步，控制臺(tái)就會(huì)輸出附件內(nèi)容，請(qǐng)問(wèn)如何設(shè)置可以取消輸出呢？public void sendFileAttachedMail(String fromMail, String toMail, String fromMailPwd, String bookId) {        Properties prop = new Properties();        prop.setProperty(MAIL_HOST, MAIL_HOST_VALUE);        prop.setProperty(MAIL_TRANSPORT_PROTOCOL, MAIL_TRANSPORT_PROTOCOL_VALUE);        prop.setProperty(MAIL_SMTP_AUTH, MAIL_SMTP_AUTH_VALUE);        Session session = Session.getInstance(prop);        session.setDebug(true);        try {            Transport ts = session.getTransport();            String fromMailPrefix = fromMail.split("@")[0];            ts.connect(MAIL_HOST_VALUE,fromMailPrefix, fromMailPwd);            String subject = "FILE ATTACHED MAIL TEST";            String content = "Mail Content RE";            String fileSavePath = "E://attachMail.eml";            Message message = createFileAttachedMail(session, fromMail, toMail, subject, content, bookId, fileSavePath);            ts.sendMessage(message, message.getAllRecipients());            ts.close();        } catch (Exception e) {            if(logger.isErrorEnabled()){                logger.error("send fileAttachedMail failed!",e);            }        }    }             public MimeMessage createFileAttachedMail(Session session, String fromAdd, String toAdd, String subject, String content, String fileObjectId, String fileSavePath) throws Exception {        MimeMessage message = new MimeMessage(session);        message.setFrom(new InternetAddress(fromAdd));        message.setRecipient(Message.RecipientType.TO, new InternetAddress(toAdd));        message.setSubject(subject);        // 郵件正文        MimeBodyPart text  = new MimeBodyPart();        text.setContent(content, MAIL_CONTENT_FORMAT_CHARSET);