Kosar.java

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package zh3;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Zsolti
 */
public class kosar extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        HttpSession session = request.getSession(true);



        Termekek item1 = new Termekek("termek1", 100);
        Termekek item2 = new Termekek("termek2", 200);
        Termekek item3 = new Termekek("termek3", 300);
        Termekek item4 = new Termekek("termek4", 400);
        try {
            try{
            if (request.getParameter("hozzaad") != null){
                    String termek1 = request.getParameter("termek1");
                    String termek2 = request.getParameter("termek2");
                    String termek3 = request.getParameter("termek3");
                    String termek4 = request.getParameter("termek4");
                    ArrayList termekek = (ArrayList) session.getAttribute("termekek");



                    if (null == termekek) {
                        termekek = new ArrayList<Termekek>();
                    }
                 if (termek1 != null) {

                        termekek.add(item1);
                        System.out.println("item1: " + item1);
                        System.out.println("item1: " + item1.getNev());
                        System.out.println("item1: " + item1.getAr());
                    }



                 if (termek2 != null) {

                        termekek.add(item2);

                    }
                 if (termek3 != null) {

                        termekek.add(item3);

                    }
                 if (termek4 != null) {

                        termekek.add(item4);

                    }


                    System.out.println("termek1: " + termek1);
                    session.setAttribute("termekek", termekek);
                    System.out.println("session.getAttribute('termekek'): " + session.getAttribute("termekek"));
                    System.out.println("termekek: " + termekek);
                    request.getRequestDispatcher("index.jsp").forward(request, response);
            }

            } catch (Exception h) {
                h.printStackTrace();
            }
            try {

                if (request.getParameter("kivesz") != null) {
                    String termek1 = request.getParameter("termek1");
                    String termek2 = request.getParameter("termek2");
                    String termek3 = request.getParameter("termek3");
                    String termek4 = request.getParameter("termek4");
                    ArrayList<Termekek> termekek = (ArrayList<Termekek>) session.getAttribute("termekek");

                    if (null == termekek) {
                        termekek = new ArrayList<Termekek>();
                    }

                    for (int i = 0; i<termekek.size();i++) {

                        System.out.println("termekek mérete: " + termekek.size());
                    Termekek item = termekek.get(i);
                    System.out.println("i értéke eleje: " + i);
                    System.out.println("termek.get(i) eleje: " + termekek.get(i));
                    System.out.println("item.getNev() eleje" + item.getNev());
                        if (termek1 != null) {
                            if("termek1".equals(item.getNev())) {
                                System.out.println("termek1nél járok");
                                termekek.remove(i);

                            }
                        }
                        if (termek2 != null) {
                            if("termek2".equals(item.getNev())) {
                                System.out.println("termek2nél járok");
                                termekek.remove(i);

                            }
                        }
                        if (termek3 != null) {
                            if("termek3".equals(item.getNev())) {
                                System.out.println("termek3nél járok");
                                termekek.remove(i);

                            }
                        }
                        if (termek4 != null) {
                            if("termek4".equals(item.getNev())) {
                                System.out.println("termek4nél járok");
                                termekek.remove(i);

                            }
                        }
                         System.out.println("i értéke a végén: " + i);
                    System.out.println("termek.get(i) végén: " +termekek.get(i));
                    System.out.println("item.getNev() végén" +item.getNev());
                    }

                    for(Termekek item: termekek){
                    System.out.println("retreived element: " + item);
                    }



                    session.setAttribute("termekek", termekek);
                    System.out.println("session.getAttribute('termekek')" + session.getAttribute("termekek"));
                    request.getRequestDispatcher("index.jsp").forward(request, response);
                }
            } catch (Exception k) {
                k.printStackTrace();
            }
            try {

                if (request.getParameter("urit") != null) {
                    request.getRequestDispatcher("DestroySession.jsp").forward(request, response);

                }
            } catch (Exception u) {
                u.printStackTrace();
            }

        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}