(Servlet) Logout

package com.awesometodo.controller;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.awesometodo.model.UserBean;

/**
 * Servlet implementation class Logout
 */
@WebServlet("/Logout")
public class Logout extends HttpServlet {
	private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public Logout() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		response.getWriter().append("Served at: ").append(request.getContextPath());
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		//get fields from form
				String username = request.getParameter("username");
				String password = request.getParameter("password");

				//later, we will check the username and password inside the db.

				//dummy checking
				if(username.equals("felix") && password.equals("1234"))
				{
					UserBean ub = new UserBean("Felix Halim", "felix@gmail.com", "felix", "1234");
					HttpSession session = request.getSession();
					session.invalidate();
					request.getRequestDispatcher("index.jsp").forward(request, response);;
				}
				else
				{
					request.setAttribute("loginerror", "yes");
					request.getRequestDispatcher("index.jsp").forward(request, response);;
				}
	}

}