public  void service(HttpServletRequest request,
    HttpServletResponse response) throws IOException, ServletException 
{
		ServletContext context = this.getServletConfig().getServletContext();
		File reportFile = new File(context.getRealPath("/reports/WebappReport.jasper"));
		if (!reportFile.exists())
			throw new JRRuntimeException("File WebappReport.jasper not found. The report design must be compiled first.");
		Map parameters = new HashMap();
		parameters.put("ReportTitle", "Address Report");
		parameters.put("BaseDir", reportFile.getParentFile());
		JasperPrint jasperPrint = null;
		try
		{
			JasperReport jasperReport = (JasperReport)JRLoader.loadObject(reportFile.getPath());
			jasperPrint = 
				JasperFillManager.fillReport(
					jasperReport,
					parameters, 
					new WebappDataSource()
					);
		}
		catch (JRException e)
		{
			response.setContentType("text/html");
			PrintWriter out = response.getWriter();
			out.println("< html >");
			out.println("< head >");
			out.println("< title >JasperReports - Web Application Sample< /title >");
			out.println("< link rel=\"stylesheet\" type=\"text/css\" href=\"../stylesheet.css\" title=\"Style\" >");
			out.println("< /head >");
			out.println("< body bgcolor=\"white\" >");
			out.println("< span class=\"bnew\" >JasperReports encountered this error :< /span >");
			out.println("< pre >");
			e.printStackTrace(out);
			out.println("< /pre >");
			out.println("< /body >");
			out.println("< /html >");
			return;
		}
		if (jasperPrint != null)
		{
			response.setContentType("application/octet-stream");
			ServletOutputStream ouputStream = response.getOutputStream();
			ObjectOutputStream oos = new ObjectOutputStream(ouputStream);
			oos.writeObject(jasperPrint);
			oos.flush();
			oos.close();
			ouputStream.flush();
			ouputStream.close();
		}
		else
		{
			response.setContentType("text/html");
			PrintWriter out = response.getWriter();
			out.println("< html >");
			out.println("< head >");
			out.println("< title >JasperReports - Web Application Sample< /title >");
			out.println("< link rel=\"stylesheet\" type=\"text/css\" href=\"../stylesheet.css\" title=\"Style\" >");
			out.println("< /head >");
			out.println("< body bgcolor=\"white\" >");
			out.println("< span class=\"bold\" >Empty response.< /span >");
			out.println("< /body >");
			out.println("< /html >");
		}
}