logoutaction.java

Simple login example for jsp beginner...

package us.souther.simple.login;

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 java.io.IOException;

public class LogoutAction implements Action{
    public void perform(HttpServletRequest  request,
                        HttpServletResponse response)throws ServletException, IOException{

        String      username = request.getParameter("username");
        String      password = request.getParameter("password");
        HttpSession session  = request.getSession();

        session.invalidate();

        LoginBean loginBean = new LoginBean();
        loginBean.setUserMessage("You have been logged out");
        request.setAttribute("loginBean", loginBean);
        request.getRequestDispatcher("/login.do").forward(request, response);
    }
}