LG

Table des matières

Schéma MVC
Exemple
- Controleur
- Modèle
- Vue

Cette page nécessite de connaître les Servlet et les jsp.

Schéma MVC

Simple web MVC with servlets and JSP Archive du 08/05/2012 le 27/04/2020

Exemple

Controleur

package com.llgc.controleur;
 
import java.io.IOException;
import java.sql.SQLException;
 
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import com.llgc.modele.ModeleVoiture;
import com.llgc.modele.pojo.POJOVoiture;
 
/**
 * Servlet implementation class CtrlJSP
 */
@SuppressWarnings("serial")
@WebServlet("/CtrlJSP")
public class CtrlJSP extends HttpServlet {
  private ModeleVoiture modele = new ModeleVoiture();
 
  /**
   * @see HttpServlet#HttpServlet()
   */
  public CtrlJSP() {
    super();
  }
 
  /**
   * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
   *      response)
   */
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    POJOVoiture voiture = new POJOVoiture();
 
    voiture.setMarque(request.getParameter("marque"));
    voiture.setPoids(Integer.parseInt(request.getParameter("poids")));
    voiture.setNom(request.getParameter("nom"));
    try {
      modele.create(voiture);
      response.sendRedirect("index2.jsp");
    } catch (ClassNotFoundException | SQLException e) {
      response.sendRedirect("error.jsp");
    }
  }
 
}

Modèle

ModeleVoiture.java

package com.llgc.modele;
 
import java.sql.SQLException;
 
import com.llgc.dao.DAOVoiture;
import com.llgc.modele.pojo.POJOVoiture;
 
public class ModeleVoiture {
  private DAOVoiture dao = new DAOVoiture();
 
  public void create(POJOVoiture entite) throws ClassNotFoundException, SQLException {
    dao.create(entite);
  }
 
  public POJOVoiture read(int id) throws ClassNotFoundException, SQLException {
    return dao.read(id);
  }
 
  public void update(POJOVoiture entite) throws ClassNotFoundException, SQLException {
    dao.update(entite);
  }
 
  public void updateNom(int id, String nom) throws ClassNotFoundException, SQLException {
    dao.updateNom(id, nom);
  }
 
  public void updatePoids(int id, int poids) throws ClassNotFoundException, SQLException {
    dao.updatePoids(id, poids);
  }
 
  public void updateMarque(int id, String marque) throws ClassNotFoundException, SQLException {
    dao.updateMarque(id, marque);
  }
 
  public void delete(int id) throws ClassNotFoundException, SQLException {
    dao.delete(id);
  }
}

Vue

index2.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>Insert title here</title>
  </head>
  <body>
    <form method="post" action="CtrlJSP">
      <span class="label_nav">nom</span>
      <input type="text" id="nom" name="nom" required="required" /><br />
      <span class="label_nav">poids</span>
      <input type="text" id="poids" name="poids" required="required" /><br />
      <span class="label_nav">marque</span>
      <input type="text" id="marque" name="marque" required="required" /><br />
      <input type="submit" value="Validation" id="button" />
    </form>
  </body>
</html>