CategoryServlet.java Source code

Introduction

Here is the source code for CategoryServlet.java

Source

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
import JSON.WriteQuestionnaireJSON;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.json.simple.JSONObject;

/**
 *
 * @author Pranav
 */
public class CategoryServlet 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");
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */

            try {
                BufferedReader br = null;
                String price_range = request.getParameter("price_range");
                System.out.println(price_range);

                if (price_range.equals("null"))
                    response.sendRedirect("Home.html");
                else {
                    HttpSession session = request.getSession();
                    session.setAttribute("price_range", price_range);
                    br = new BufferedReader(new FileReader("Path to your questionnaire files"));
                }

                WriteQuestionnaireJSON obj = new WriteQuestionnaireJSON();

                String line;
                int i = 1;
                while ((line = br.readLine()) != null) {
                    obj.buildJSON(line + "?", "Q" + i);
                    i++;
                }
                JSONObject x = obj.write();
                out.println(x.toJSONString());
            } catch (Exception e) {
                out.println(e.getMessage());

            }
        }
    } // <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>
}