Untitled

JSF Login Session and redirect
package com.erp3.gui.controllers;

import javax.faces.context.FacesContext;

public class MainController {

    public LoginController loginController;

    public MainController() {
        this.checkUserSession();
    }

    public String checkUserSession() {
        loginController = (LoginController) FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get("loginController");
        if (!loginController.getIsLoggedIn()) {
            return "login.html";
        } else {
            return null;
        }
    }
}

package com.erp3.gui.controllers;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;

@ManagedBean
public class HomeController extends MainController {

    public String username;

    public HomeController() {
        super();
    }
}

package com.erp3.gui.controllers;

import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.context.FacesContext;

@ManagedBean
public class LoginController {

    public Boolean isLoggedIn = false;
    private String username;
    private String password;
    private FacesMessage msg;

    public String login() {

        if (this.getUsername().equals("daniel") && this.getPassword().equals("123")) {
            this.isLoggedIn = true;

public String logOut() {
        FacesContext.getCurrentInstance().getExternalContext().getSessionMap().remove("loginController");
        return "login.html";
    }
}

Cant instantiate class: com.erp3.gui.controllers.HomeController.

public class MainController {

    public MainController() throws IOException {
        this.checkUserSession();
    }

    public void checkUserSession() throws IOException {
        ExternalContext ec = FacesContext.getCurrentInstance().getExternalContext();
        LoginController loginController = (LoginController) ec.getSessionMap().get("loginController");

        if (loginController == null || !loginController.getIsLoggedIn()) {
            ec.redirect(ec.getRequestContextPath() + "/login.html");
        }
    }

}