org.vosao.utils.EmailUtil.java Source code

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Here is the source code for org.vosao.utils.EmailUtil.java

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/**
 * Vosao CMS. Simple CMS for Google App Engine.
 * 
 * Copyright (C) 2009-2010 Vosao development team.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * email: vosao.dev@gmail.com
 */

package org.vosao.utils;

import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.util.ByteArrayDataSource;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class EmailUtil {

    private static final Log logger = LogFactory.getLog(EmailUtil.class);

    /**
     * Send email with html content.
     * @param htmlBody
     * @param subject
     * @param fromAddress
     * @param fromText
     * @param toAddress
     * @return null if OK or error message.
     */
    public static String sendEmail(final String htmlBody, final String subject, final String fromAddress,
            final String fromText, final String toAddress) {
        return sendEmail(htmlBody, subject, fromAddress, fromText, toAddress, new ArrayList<FileItem>());
    }

    /**
     * Send email with html content and attachments.
     * @param htmlBody
     * @param subject
     * @param fromAddress
     * @param fromText
     * @param toAddress
     * @return null if OK or error message.
     */
    public static String sendEmail(final String htmlBody, final String subject, final String fromAddress,
            final String fromText, final String toAddress, final List<FileItem> files) {

        Properties props = new Properties();
        Session session = Session.getDefaultInstance(props, null);
        try {
            Multipart mp = new MimeMultipart();
            MimeBodyPart htmlPart = new MimeBodyPart();
            htmlPart.setContent(htmlBody, "text/html");
            htmlPart.setHeader("Content-type", "text/html; charset=UTF-8");
            mp.addBodyPart(htmlPart);
            for (FileItem item : files) {
                MimeBodyPart attachment = new MimeBodyPart();
                attachment.setFileName(item.getFilename());
                String mimeType = MimeType.getContentTypeByExt(FolderUtil.getFileExt(item.getFilename()));
                if (mimeType.equals("text/plain")) {
                    mimeType = MimeType.DEFAULT;
                }
                DataSource ds = new ByteArrayDataSource(item.getData(), mimeType);
                attachment.setDataHandler(new DataHandler(ds));
                mp.addBodyPart(attachment);
            }
            MimeMessage msg = new MimeMessage(session);
            msg.setFrom(new InternetAddress(fromAddress, fromText));
            msg.addRecipient(Message.RecipientType.TO, new InternetAddress(toAddress, toAddress));
            msg.setSubject(subject, "UTF-8");
            msg.setContent(mp);
            Transport.send(msg);
            return null;
        } catch (AddressException e) {
            return e.getMessage();
        } catch (MessagingException e) {
            return e.getMessage();
        } catch (UnsupportedEncodingException e) {
            return e.getMessage();
        }
    }

}