How do I logout in JSF ?

Question

Hey up,
I'm doing an app in JSF, and I dont know how logout lol !
I have the following:
my managedBean:
public class Login {
    private String nome;
    private String senha;
    private boolean logged;
//getters and setters
    public  String validateLogin(){
        if(nome!=null && senha!=null && !nome.equalsIgnoreCase(senha)){
            logged = true;
            return "main";
        }else
            return "login";
    public boolean isLogged() {
        //HERE I'D LIKE SOMETHING TO CHECK AND DO LOGOUT IF ITS FALSE
        return logged;
    public String doLogout(){
        logged = false;
        //WHAT DO I PUT HERE ?
        return "login";
    }this is my faces config
    <managed-bean>
        <managed-bean-name>Login</managed-bean-name>
        <managed-bean-class>Main.Login</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>
    <navigation-rule>
        <from-view-id>/welcomeJSF.jsp</from-view-id>
        <navigation-case>
            <from-outcome>login</from-outcome>
            <to-view-id>/welcomeJSF.jsp</to-view-id>
        </navigation-case>
        <navigation-case>
            <from-outcome>main</from-outcome>
            <to-view-id>/jlogin.jsp</to-view-id>
        </navigation-case>
    </navigation-rule>
    <navigation-rule>
        <from-view-id>/jlogin.jsp</from-view-id>
        <navigation-case>
            <from-outcome>login</from-outcome>
            <to-view-id>/welcomeJSF.jsp</to-view-id>
        </navigation-case>
    </navigation-rule>so... I dont know how do logout! does someone can help me out on this ?
thanks
Rafael Broz

Answer 1

I have make a jar of following class
package jsfnocache;
import javax.faces.context.FacesContext;
import javax.faces.event.PhaseEvent;
import javax.faces.event.PhaseId;
import javax.faces.event.PhaseListener;
import javax.servlet.http.HttpServletResponse;
public class CacheControlPhaseListener implements PhaseListener {
public PhaseId getPhaseId() {
return PhaseId.RENDER_RESPONSE;
public void afterPhase(PhaseEvent event) {}
public void beforePhase(PhaseEvent event) {
FacesContext facesContext = event.getFacesContext();
HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();
response.addHeader("Pragma", "no-cache");
response.addHeader("Cache-Control", "no-cache");
response.addHeader("Cache-Control", "must-revalidate");
response.addHeader("Expires", "Mon, 8 Aug 2006 10:00:00 GMT"); // some date in the past
}then in faces-config.xml i have added following entry
<lifecycle>
        <phase-listener>jsfnocache.CacheControlPhaseListener</phase-listener>
    </lifecycle>now in my application page flow is somethiing like this:
when user loggin one session bean gets created and it holds info. to show this user is logeed in..
when user clicks on sign out link all info will be destroyed and user will be redirected to the home page again to login..
BUT AFTER DOING ABOVE MENTIONED IMPLEMENTATION WHEN USER PRESSES BACK BUTTON HE GETS THE PAGES BACK AGAIN>>IS THERE ANY ADDITIONAL CONF. REQUIRED?