gwtupload.sendmailsample.server.SendMailSampleServlet.java Source code

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Here is the source code for gwtupload.sendmailsample.server.SendMailSampleServlet.java

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/*
 * Copyright 2009 Manuel Carrasco Moino. (manuel_carrasco at users.sourceforge.net) 
 * http://code.google.com/p/gwtupload
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package gwtupload.sendmailsample.server;

import gwtupload.server.UploadAction;
import gwtupload.server.exceptions.UploadActionException;

import java.util.List;
import java.util.Properties;

import javax.activation.DataHandler;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
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 javax.servlet.http.HttpServletRequest;

import org.apache.commons.fileupload.FileItem;

/**
 * This class sends by email, all the fields and files received by GWTUpload servlet.
 * 
 * @author Manolo Carrasco Moino
 *
 */
public class SendMailSampleServlet extends UploadAction {

    private static final String SMTP_SERVER = "localhost";

    private static final long serialVersionUID = 1L;

    /* (non-Javadoc)
     * @see gwtupload.server.UploadAction#executeAction(javax.servlet.http.HttpServletRequest, java.util.List)
     */
    @Override
    public String executeAction(HttpServletRequest request, List<FileItem> sessionFiles)
            throws UploadActionException {
        try {
            String from = null, to = null, subject = "", body = "";
            // create a new multipart content
            MimeMultipart multiPart = new MimeMultipart();
            for (FileItem item : sessionFiles) {
                if (item.isFormField()) {
                    if ("from".equals(item.getFieldName()))
                        from = item.getString();
                    if ("to".equals(item.getFieldName()))
                        to = item.getString();
                    if ("subject".equals(item.getFieldName()))
                        subject = item.getString();
                    if ("body".equals(item.getFieldName()))
                        body = item.getString();
                } else {
                    // add the file part to multipart content
                    MimeBodyPart part = new MimeBodyPart();
                    part.setFileName(item.getName());
                    part.setDataHandler(
                            new DataHandler(new ByteArrayDataSource(item.get(), item.getContentType())));
                    multiPart.addBodyPart(part);
                }
            }

            // add the text part to multipart content
            MimeBodyPart txtPart = new MimeBodyPart();
            txtPart.setContent(body, "text/plain");
            multiPart.addBodyPart(txtPart);

            // configure smtp server
            Properties props = System.getProperties();
            props.put("mail.smtp.host", SMTP_SERVER);
            // create a new mail session and the mime message
            MimeMessage mime = new MimeMessage(Session.getInstance(props));
            mime.setText(body);
            mime.setContent(multiPart);
            mime.setSubject(subject);
            mime.setFrom(new InternetAddress(from));
            for (String rcpt : to.split("[\\s;,]+"))
                mime.addRecipient(Message.RecipientType.TO, new InternetAddress(rcpt));
            // send the message
            Transport.send(mime);
        } catch (MessagingException e) {
            throw new UploadActionException(e.getMessage());
        }
        return "Your mail has been sent successfuly.";
    }

}