updateQuizAttempts.java

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

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Dreads
 */
@WebServlet(name = "updateQuizAttempts", urlPatterns = {"/updateQuizAttempts"})
public class updateQuizAttempts extends HttpServlet {
    Connection con = null;
    Statement st = null;
    ResultSet rs = null;
    static final String JDBC_DRIVER ="com.mysql.jdbc.Driver";  
    String url = "jdbc:mysql://46.101.32.81:3306/EGAlexander";
    String user = "root";
    String password = "teameight";
    /**
     * 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()) {
            
        }
    }

    // <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 
    {
        try
        {
            String quizId = request.getParameter("QuizId");
            String userName = request.getParameter("Username");
            String userScore = request.getParameter("UserScore");
            int quizid = Integer.parseInt(quizId);
            int userscore = Integer.parseInt(userScore);
            int userPoints = 0;
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            con = DriverManager.getConnection(url, user, password);
            CallableStatement cs = this.con.prepareCall("{call create_quiz_record(?,?,?)}");
            cs.setInt(1, quizid);
            cs.setString(2, userName);
            cs.setInt(3, userscore);
            cs.executeQuery();
            cs.close();
            if(userscore >= 80)
            {
                userPoints = userscore / 10;
                CallableStatement cs2 = this.con.prepareCall("{call update_test_points(?,?)}");
                cs2.setString(1, userName);
                cs2.setInt(2, userPoints);
                cs2.executeQuery();
                cs2.close();
            }
            con.close();
            RequestDispatcher rd = request.getRequestDispatcher("homePage");
            rd.forward(request,response);
        }
        catch (ClassNotFoundException | SQLException | InstantiationException | IllegalAccessException ex) {
            Logger.getLogger(updateQuizAttempts.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

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

}