protected void processRequest(HttpServletRequest request, HttpServletResponse response) {
    ZipOutputStream zipfile = null;

    try {
        String array[] = {"1233", "234"};
        HashMap params = new HashMap();

        Class.forName("oracle.jdbc.driver.OracleDriver");
        Connection cn = DriverManager.getConnection("jdbc:oracle:thin:@103.179.1.218:1521:tims", "scoot", "tiger");

        // Wrap the servlet output stream with a zip output stream
        zipfile = new ZipOutputStream(response.getOutputStream());

        for (int i = 0; i < array.length; i++) {
            params.put("seller_name", array[i]);

            JasperDesign jasperDesign = JRXmlLoader.load(getServletContext().getRealPath("/") + "report\CForm.jrxml");
            JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
            JasperPrint jasperprint = JasperFillManager.fillReport(jasperReport, params, cn);

            byte[] pdfAsBytes = JasperExportManager.exportReportToPdf(jasperprint, params, cn);

            // Create and add the zip entry
            ZipEntry zipentry = new ZipEntry("report" + i + ".pdf");
            zipfile.putNextEntry(zipentry);
            zipfile.write(pdfAsBytes);
        }

        // Add the response headers
        response.setHeader("Content-disposition", "attachement; filename=" + UUID.randomUUID().toString() + ".zip");
        response.setContentType("application/zip");
    } catch (Exception ex) {
        log("An error occured", ex);
    } finally{
        try {
            // Flush the stream
            zipfile.flush();
        } catch (Exception e) {
        }

        try {
            // Close the stream
            zipfile.close();
        } catch (Exception e) {
        }
    }
}