public class BatchDownloadServlet extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)

            throws ServletException, IOException {

        doPost(request, response);

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)

            throws ServletException, IOException {

        response.setContentType("application/x-msdownload");

        response.setHeader("Content-Disposition", "attachment;filename=test.zip");

        String path = getServletContext().getRealPath("/")+"images/";

        String[] filenames = request.getParameterValues("filename");

        String str = "";

        String rt = "\r\t";

        ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());

        for(String filename:filenames){

            str+=filename+rt;

            File file = new File(path+filename);

            zos.putNextEntry(new ZipEntry(filename));

            FileInputStream fis = new FileInputStream(file);

            byte[] b = new byte[1024];

            int n = 0;

            while((n=fis.read(b))!=-1){

                zos.write(b, 0, n);

            }

            zos.flush();

            fis.close();

        }

        zos.setComment("download success:"+rt+str);

        zos.flush();

        zos.close();

    }

}