| gvSIG desktop 1

package es.logex.tigris.addins;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import javax.servlet.ServletConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletOutputStream;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.omg.CORBA_2_3.portable.OutputStream;

/**

 * Servlet implementation class for Servlet: DownloaderServlet

 *

 */

 public class DownloaderServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {

   static final long serialVersionUID = 1L;

   private static String absoluteFSPath = null;

   private boolean deleteAfeterDownload = false;

    /* (non-Java-doc)

         * @see javax.servlet.http.HttpServlet#HttpServlet()

         */

        public DownloaderServlet() {

                super();

        }           

        /* (non-Java-doc)

         * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)

         */

        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

                // TODO Auto-generated method stub

                processDownload(request, response);

        }

        private void processDownload(HttpServletRequest request,

                        HttpServletResponse response) throws IOException {

                String file = request.getParameter("file");

                if(file == null)

                {

                        response.sendError(HttpServletResponse.SC_BAD_REQUEST);

                        return;

                }

                FileInputStream fin = null;

                File absoluteFile = null;

                try

                {

                        absoluteFile = new File(new File(absoluteFSPath),file);

                        fin = new FileInputStream(absoluteFile);

                        long fLen = absoluteFile.length();

                        response.setContentType("text/xml;subtype=gml/2.1.2");

                        response.setContentLength((int)fLen);

                        ServletOutputStream os = response.getOutputStream();

                        int len=0;

                        byte [] data = new byte[10240];

                        try

                        {

                                while ( (len=fin.read(data)) > 0)

                                {

                                        os.write(data,0,len);

                                }

                                os.flush();

                        }

                        catch(IOException ex)

                        {

                        }

                        fin.close();

                }

                catch(Exception ex)

                {

                        response.sendError(HttpServletResponse.SC_NOT_FOUND);

                        return;

                }

                if(absoluteFile!=null)

                {

                        absoluteFile.delete();

                }

        }

        @Override

        public void init(ServletConfig config) throws ServletException {

                // TODO Auto-generated method stub

                super.init(config);

                absoluteFSPath = config.getInitParameter("absoluteFSPath");

                if(absoluteFSPath == null)

                {

                        throw new ServletException("Me falta el parametro requerido 'absoluteFSPath'");

                }

                String strDeleteAfterDownload = config.getInitParameter("deleteAfterDownload");

                deleteAfeterDownload = Boolean.parseBoolean(strDeleteAfterDownload);

        }          

}