SauvegardePDF.java

package controleur;

import Metier.Principale;
import Metier.Livre;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class SauvegardePDF extends HttpServlet {
    
    public static final String VUE_RECHERCHE = "/Recherche.jsp";
    public static final String CHAMP_REPERTOIRE = "repertoire";
    public static final String ATT_CRITERE = "critere";
    
    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 {
        try {
            HttpSession session = request.getSession();
            String nameFichier = request.getParameter(this.CHAMP_REPERTOIRE);
            String critere = (String) session.getAttribute(this.ATT_CRITERE);
            
            ArrayList<Livre> livres = new ArrayList<>();
            livres =  (ArrayList<Livre>) session.getAttribute("lastRecherche");
            Principale controleur = Metier.MetierFactory.getPrincipale();
            Document myPDF = new Document(PageSize.A4, 50, 50, 50, 50);
            
            response.setHeader("Content-Disposition", "attachment; filename=\"" + nameFichier + "\"");

            PdfWriter pdfWriter = PdfWriter.getInstance(myPDF, response.getOutputStream());
            myPDF.open();
            Paragraph paragraph = controleur.imprimerRecherche(livres, critere);
            myPDF.add(paragraph);
            myPDF.close();
            response.getOutputStream().close();
            this.getServletContext().getRequestDispatcher(this.VUE_RECHERCHE).forward( request, response );
        } catch (DocumentException ex) {
            Logger.getLogger(SauvegardePDF.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    
    
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}