InfoLivre.java

package controleur;

import Metier.Livre;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class InfoLivre extends HttpServlet {
    
    public static final String VUE_INFO = "/InfoLivre.jsp";
    public static final String VUE_ACCUEIL = "/Accueil.jsp";
    public static final String PARAM_ID = "id";
    public static final String ATT_LIVRE  = "infoLivre";
    private String id;
    
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        /* Affichage de la page d'info */
        this.getServletContext().getRequestDispatcher(this.VUE_ACCUEIL).forward( request, response );
    }
    
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        /* Récupération d'id envoié */
        this.id = request.getParameter(this.PARAM_ID);
        
        Livre livre = Metier.MetierFactory.getLivreService().getById(this.id);
        
        /* Stockage du résultat dans l'objet request */
        request.setAttribute(this.ATT_LIVRE, livre);
        
        this.getServletContext().getRequestDispatcher(this.VUE_INFO).forward( request, response );
    }
    
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }
    
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}