View - MVC - JSP/Servlets

package mao.servlets;

import java.io.IOException;
import java.io.PrintWriter;

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;

import mao.models.DatabaseManagement;

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

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

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
     *      response)
     */
    protected void doPost(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        PrintWriter writer = response.getWriter();
        DatabaseManagement dm = new DatabaseManagement();
        if (dm.checkUser(username, password)) {
            // writer.println("Welcome " + username + " to the Website!!!");
            RequestDispatcher dispatcher = request
                    .getRequestDispatcher("show.jsp");
            dispatcher.forward(request, response);
        } else {
            // writer.println("Username or Password is incorrect!");
            response.sendRedirect("login.jsp");
        }
    }

}