DownloadLogServlet.java

package com.occamlab.te.web;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.occamlab.te.util.ZipUtils;

/**
 * Servlet implementation class for Servlet: DownloadLogServlet
 * 
 */
public class DownloadLogServlet extends javax.servlet.http.HttpServlet
        implements javax.servlet.Servlet {
    Config Conf;

    public void init() throws ServletException {
        Conf = new Config();
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException {
        try {
            String sessionId = request.getParameter("session");
            String zipFileName = sessionId + ".zip";
            File userdir = new File(Conf.getUsersDir(), request.getRemoteUser());
            // File userdir = new File(Conf.getUsersDir(), "tester1");
            File sessiondir = new File(userdir, sessionId);
            File zipFile = new File(userdir, zipFileName);
            ZipUtils.zipDir(zipFile, sessiondir);
            response.setContentType("application/zip");
            response.setHeader("Content-Disposition", "attachment; filename="
                    + zipFileName + ";");
            response.setHeader("Cache-Control", "no-cache");
            byte[] buf = new byte[response.getBufferSize()];
            response.setContentLength((int) zipFile.length());
            System.out.println("file length : " + (int) zipFile.length());
            int length;

            BufferedInputStream fileInBuf = new BufferedInputStream(
                    new FileInputStream(zipFile));

            // ByteArrayOutputStream baos = new ByteArrayOutputStream();
            OutputStream out = response.getOutputStream();

            while ((length = fileInBuf.read(buf)) > 0) {
                out.write(buf, 0, length);
                // baos.write(buf, 0, length);
            }

            // response.getOutputStream().write(baos.toByteArray());
            // response.getOutputStream().flush();
            // response.getOutputStream().close();
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
}