/* * @(#)AttachmentServlet.java	1.4 07/07/06 * * Copyright 2001-2007 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * *   - Redistributions of source code must retain the above copyright *     notice, this list of conditions and the following disclaimer. * *   - Redistributions in binary form must reproduce the above copyright *     notice, this list of conditions and the following disclaimer in the *     documentation and/or other materials provided with the distribution. * *   - Neither the name of Sun Microsystems nor the names of its *     contributors may be used to endorse or promote products derived *     from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */package demo;import java.io.*;import javax.mail.*;import javax.mail.internet.*;import javax.servlet.*;import javax.servlet.http.*;/** * This servlet gets the input stream for a given msg part and  * pushes it out to the browser with the correct content type. * Used to display attachments and relies on the browser's * content handling capabilities. */public class AttachmentServlet extends HttpServlet {    /**     * This method handles the GET requests from the client.     */    public void doGet(HttpServletRequest request, HttpServletResponse  response)        throws IOException, ServletException {              HttpSession session = request.getSession();        ServletOutputStream out = response.getOutputStream();        int msgNum = Integer.parseInt(request.getParameter("message"));        int partNum = Integer.parseInt(request.getParameter("part"));        MailUserBean mailuser = (MailUserBean)session.getAttribute("mailuser");        // check to be sure we're still logged in        if (mailuser.isLoggedIn()) {            try {                Message msg = mailuser.getFolder().getMessage(msgNum);                Multipart multipart = (Multipart)msg.getContent();	        Part part = multipart.getBodyPart(partNum);                                String sct = part.getContentType();	        if (sct == null) {		    out.println("invalid part");		    return;	        }	        ContentType ct = new ContentType(sct);	        response.setContentType(ct.getBaseType());	        InputStream is = part.getInputStream();	        int i;	        while ((i = is.read()) != -1)		    out.write(i);	        out.flush();	        out.close();            } catch (MessagingException ex) {                throw new ServletException(ex.getMessage());            }        } else {            getServletConfig().getServletContext().                getRequestDispatcher("/index.html").                forward(request, response);        }    }   }