SauvegardeExcel.java

package controleur;

import Metier.Principale;
import Metier.Livre;
import Metier.LivreService;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Workbook;


public class SauvegardeExcel extends HttpServlet {

    public static final String VUE_RECHERCHE = "/Recherche.jsp";
    public static final String CHAMP_REPERTOIRE = "repertoire";

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.getServletContext().getRequestDispatcher(this.VUE_RECHERCHE).forward(request, response);
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        HttpSession session = request.getSession();
        String nameFichier = request.getParameter(this.CHAMP_REPERTOIRE);
        nameFichier+=".xls";

        Workbook wb = new HSSFWorkbook();
        Principale controleur = Metier.MetierFactory.getPrincipale();
        controleur.CreerSauvegardeExcel(wb);

        response.setHeader("Content-Disposition", "attachment; filename=\"" + nameFichier + "\"");
        
        wb.write(response.getOutputStream());
        response.getOutputStream().close();
        this.getServletContext().getRequestDispatcher(this.VUE_RECHERCHE).forward(request, response);
    }

    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}