loginservlet.java

use MVC bean with 3-tiers

package usermanager.servlets;

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

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 usermanager.beans.*;
import usermanager.bo.AccountBO;
import usermanager.dto.AccountDTO;
import usermanager.utility.UserManagerProperties;

public class LoginServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    public LoginServlet() {
        super();
    }

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		PrintWriter out = response.getWriter();
		
	 	String username = request.getParameter("username");
	    String password = request.getParameter("password");
	    HttpSession session = request.getSession(); 
	    try {
	    	AccountBO accountBO = new AccountBO();
	    	boolean loginOK = accountBO.login(username, password);
	        if (loginOK) {
	        	AccountDTO accountDTO = accountBO.getUserInformation(username);
	        	UserBean userBean = new UserBean();
	        	userBean.initUserBeanFromDTO(accountDTO);
	            session.setAttribute("UserBean", userBean);
	            if (userBean.getRoleld().equalsIgnoreCase(UserManagerProperties.ADMIN_ROLE)) {
	            	//response.sendRedirect("./jsp/AdminFunctions.jsp");
	            	String path = "./jsp/AdminFunctions.jsp";
	            	RequestDispatcher dispatcher = request.getRequestDispatcher(path);
	            	dispatcher.forward(request, response);
	            }
	            else {
	            	//response.sendRedirect("./jsp/ViewUser.jsp");
	            }
	        }
	        else {
	        	response.sendRedirect("./jsp/Login.jsp");
	        }
	    }
	    catch(Exception e) {
	    	out.println(e.toString());
	    }
	}
}