Ireport com Procedure Mysql

call sp_Rel_Agupamento_Mensal_Rec_Pag(1,2008,9) ;

package Service.Relatorio;

import java.io.File;
import jdbc.ConnectionFactory;

import java.io.IOException;
import java.sql.SQLException;

import java.sql.Connection;
import java.util.HashMap;



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

import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;

public class GeradorDeRelatrios extends HttpServlet implements Servlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String NomeJasper = (String)request.getSession().getAttribute("nomejasper");
        String pathJasper = getServletContext().getRealPath("/WEB-INF/classes/jasper/")  + "/";
        String path = getServletContext().getRealPath("/");
        new File(path + NomeJasper + ".pdf").deleteOnExit();
        try {
            JasperPrint impressao = this.SetaValoresJasper(pathJasper + NomeJasper + ".jasper");
            if (impressao != null) {
                JasperExportManager.exportReportToPdfFile(impressao, path + NomeJasper + ".pdf");
                response.sendRedirect("http://caio:8080/RelatorioWEB/" + NomeJasper + ".pdf");

            }
        } catch (IOException ex) {
             response.getWriter().print("Erro");
        } catch (JRException ex) {
            response.getWriter().print("Erro2");
        }
         
        //response.sendRedirect("http://www.google.com.br");
    }
    
    public JasperPrint SetaValoresJasper(String CaminhoArquivoJar) {
        try {
            @SuppressWarnings("static-access")
            Connection con = ConnectionFactory.getInstance().getConnection();
            HashMap map = new HashMap();
            JasperPrint rel = JasperFillManager.fillReport(CaminhoArquivoJar, map, con);
            return rel;
        } catch (JRException ex) {
            return null;
        } catch (SQLException ex) {
            return null;
        }
    }


}