protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        PrintWriter out = response.getWriter();


        if (request.getParameter("id") == null) {
            out.println("Dosya Bulunamadı.");
            out.close();
        }
        String DOC_Id = request.getParameter("id");

        try {
            Integer.parseInt(DOC_Id);
        } catch (Exception a) {
            out.println("Dosya Bulunamadı.");
            out.close();
        }

        String realFileName = null;
        String FileName = null;
        ResultSet rs;
        try {
            rs = dbConnection.returnResult("select * from HR_Document where DOC_Id = " + DOC_Id);
            realFileName = "c:\docs\" + DOC_Id + ".dat";
            if (rs.next()) {
                FileName = rs.getString("DOC_Name");
            } else {
                out.print("DOSYA BULUNAMADI : DB");
                out.close();
            }
        } catch (Exception ex) {
            out.print("DOSYA BULUNAMADI :" + ex.getMessage());
            out.close();
            return;
        }



        try {
            response.setHeader("Content-Transfer-Encoding", "binary");
            response.setHeader("content-disposition", "attachment; filename=" + FileName);
            response.setHeader("Expires", "0");
            response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
            FileInputStream fileinputstream = new FileInputStream(realFileName);
            int numberBytes = fileinputstream.available();
            for (int i = 0; i < numberBytes; i++) {
                out.print((char) fileinputstream.read());
            }
            fileinputstream.close();
        } finally {
            out.close();
        }
    }