kosar.java #2

/*
 * 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);
        int i = 0;
        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");
                    LinkedList termekek = (LinkedList) session.getAttribute("termekek");



                    if (null == termekek) {
                        termekek = new LinkedList<Termekek>();
                    }
                    if (termek1 != null) {
                        termekek.add(item1);
                        i += 1;
                        System.out.println("item1: " + item1);
                        System.out.println("item1: " + item1.getNev());
                        System.out.println("item1: " + item1.getAr());
                    }



                    if (termek2 != null) {
                        termekek.add(item2);
                        i += 1;

                    }
                    if (termek3 != null) {
                        termekek.add(item3);
                        i += 1;

                    }
                    if (termek4 != null) {
                        termekek.add(item4);
                        i += 1;
                    }


                    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");
                    LinkedList<Termekek> termekek = (LinkedList<Termekek>) session.getAttribute("termekek");
                    Iterator iterator = termekek.iterator();
                    boolean t1 = true;
                    boolean t2 = true;
                    boolean t3 = true;
                    boolean t4 = true;
                    boolean lettkiv = false;
                    int ciklusSzamlalo = 0;
                    int termekekSize = termekek.size();
                    System.out.println(ciklusSzamlalo);
                    System.out.println(termekekSize);
                    while (iterator.hasNext() && ciklusSzamlalo != termekekSize) {
                        ciklusSzamlalo = ciklusSzamlalo + 1;
                        if (lettkiv) {
                            i = i - 1;
                            if (i < 0) {
                                i = 0;
                            }
                        }
                        lettkiv = false;


                        System.out.println("forban vagyunk elején");
                        System.out.println("i értéke for elején: " + i);
                        if (termek1 != null && "termek1".equals((String) termekek.get(i).getNev()) && t1) {
                            System.out.println("i értéke termek1ben: " + i);
                            t1 = false;
                            lettkiv = true;
                            termekek.remove(i);
                        } else if (termek2 != null && "termek2".equals((String) termekek.get(i).getNev()) && t2) {
                            System.out.println("i értéke termek2ben: " + i);
                            termekek.remove(i);
                            lettkiv = true;
                            t2 = false;
                        } else if (termek3 != null && "termek3".equals((String) termekek.get(i).getNev()) && t3) {
                            System.out.println("i értéke termek3ben: " + i);
                            termekek.remove(i);
                            lettkiv = true;
                            t3 = false;
                        } else if (termek4 != null && "termek4".equals((String) termekek.get(i).getNev()) && t4) {
                            System.out.println("i értéke termek4ben: " + i);
                            termekek.remove(i);
                            lettkiv = true;
                            t4 = false;
                        }
                        System.out.println("forban vagyunk végén");
                        System.out.println("i értéke for végén: " + i);
                        i = i + 1;
                    }
                    /*
                     * for (;i<termekek.size();i++) {
                     * if("termek1".equals((String)termekek.get(i).getNev())) {
                     * termekek.remove(i); }
                     * if("termek2".equals((String)termekek.get(i).getNev())) {
                     * termekek.remove(i); }
                     * if("termek3".equals((String)termekek.get(i).getNev())) {
                     * termekek.remove(i); }
                     * if("termek4".equals((String)termekek.get(i).getNev())) {
                     * termekek.remove(i); } }
                     */

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



                    session.setAttribute("termekek", termekek);

                    request.getRequestDispatcher("index.jsp").forward(request, response);
                }
            } catch (Exception k) {
                k.printStackTrace();
            }
            try {

                if (request.getParameter("urit") != null) {
                    session.invalidate();
                    request.getRequestDispatcher("index.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>
}