public void doTag()

in jelly-tags/email/src/main/java/org/apache/commons/jelly/tags/email/EmailTag.java [143:269]
83 lines of code
14 McCabe index (conditional complexity)

    public void doTag(XMLOutput xmlOutput) throws JellyTagException {
        Properties props = new Properties();
        props.putAll(context.getVariables());

        // if a server was set then configure the system property
        if (server != null) {
            Object serverInput = this.server.evaluate(context);
            props.put("mail.smtp.host", serverInput.toString());
        }
        else {
            if (props.get("mail.smtp.host") == null) {
                throw new JellyTagException("no smtp server configured");
            }
        }

        // check if there was no to address
        if (to == null) {
            throw new JellyTagException("no to address specified");
        }

        // check if there was no from
        if (from == null) {
            throw new JellyTagException("no from address specified");
        }

        String messageBody = null;
        if (this.message != null) {
            messageBody = this.message.evaluate(context).toString();
        }
        else {
            // get message from body
            messageBody = getBodyText(encodeXML);
        }

        Object fromInput = this.from.evaluate(context);
        Object toInput = this.to.evaluate(context);

        // configure the mail session
        Session session = Session.getDefaultInstance(props, null);

        // construct the mime message
        MimeMessage msg = new MimeMessage(session);

        try {
            // set the from address
            msg.setFrom(new InternetAddress(fromInput.toString()));

            // parse out the to addresses
            StringTokenizer st = new StringTokenizer(toInput.toString(), ";");
            InternetAddress[] addresses = new InternetAddress[st.countTokens()];
            int addressCount = 0;
            while (st.hasMoreTokens()) {
                addresses[addressCount++] = new InternetAddress(st.nextToken().trim());
            }

            // set the recipients
            msg.setRecipients(Message.RecipientType.TO, addresses);

            // parse out the cc addresses
            if (cc != null) {
                Object ccInput = this.cc.evaluate(context);
                st = new StringTokenizer(ccInput.toString(), ";");
                InternetAddress[] ccAddresses = new InternetAddress[st.countTokens()];
                int ccAddressCount = 0;
                while (st.hasMoreTokens()) {
                    ccAddresses[ccAddressCount++] = new InternetAddress(st.nextToken().trim());
                }

                // set the cc recipients
                msg.setRecipients(Message.RecipientType.CC, ccAddresses);
            }
        }
        catch (AddressException e) {
            throw new JellyTagException(e);
        }
        catch (MessagingException e) {
            throw new JellyTagException(e);
        }

        try {
            // set the subject
            if (subject != null) {
                Object subjectInput = this.subject.evaluate(context);
                msg.setSubject(subjectInput.toString());
            }

            // set a timestamp
            msg.setSentDate(new Date());

            // if there was no attachment just set the text/body of the message
            if (attachment == null) {

                msg.setText(messageBody);

            }
            else {

                // attach the multipart mime message
                // setup the body
                MimeBodyPart mbp1 = new MimeBodyPart();
                mbp1.setText(messageBody);

                // setup the attachment
                MimeBodyPart mbp2 = new MimeBodyPart();
                FileDataSource fds = new FileDataSource(attachment);
                mbp2.setDataHandler(new DataHandler(fds));
                mbp2.setFileName(fds.getName());

                // create the multipart and add its parts
                Multipart mp = new MimeMultipart();
                mp.addBodyPart(mbp1);
                mp.addBodyPart(mbp2);

                msg.setContent(mp);

            }

            logger.info("sending email to " + to + " using " + server);

            // send the email
            Transport.send(msg);
        }
        catch (MessagingException e) {
            throw new JellyTagException(e);
        }

    }