Servlets.handlerequests.java Source code

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Here is the source code for Servlets.handlerequests.java

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

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import beans.*;
import java.util.ArrayList;
import javax.servlet.http.HttpSession;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import util.Census;

/**
 *
 * @author san
 */
public class handlerequests extends HttpServlet {

    private HttpSession session = null;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        session = (HttpSession) request.getSession();
        String requestType = request.getParameter("requestType");
        if (requestType.equals("states")) {
            ArrayList<State> state;
            state = (ArrayList<State>) Census.getStates();
            response.setContentType("application/json");
            PrintWriter out = response.getWriter();
            JSONObject obj = new JSONObject();
            JSONArray arr;
            for (int i = 0; i < state.size(); i++) {
                arr = new JSONArray();
                arr.add(0, state.get(i).getCode());
                arr.add(1, state.get(i).getName());
                obj.put(i, arr);
            }
            out.println(obj);
            out.close();
        } else {
            String state = request.getParameter("place");
            ArrayList<Place> place;
            place = (ArrayList<Place>) Census.getPlaces(state);
            ArrayList<Place> p = (ArrayList<Place>) session.getAttribute("dump");
            if (p == null) {
                p = place;
                session.setAttribute("dump", p);
            } else {
                p.addAll(place);
            }
            response.setContentType("application/json");
            PrintWriter out = response.getWriter();
            JSONObject obj = new JSONObject();
            JSONArray arr;
            for (int i = 0; i < place.size(); i++) {
                arr = new JSONArray();
                arr.add(0, place.get(i).getCode());
                arr.add(1, place.get(i).getName());
                obj.put(i, arr);
            }
            out.println(obj);
            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>
}