index.html change to index.xhtml - jsf-2

Question

When trying to logout my application I'm having the following error message :
com.sun.faces.context.FacesFileNotFoundException: /index.xhtml Not Found in ExternalContext as a Resource
To logout I'm going though the following steps inside PhaseListener.beforePhase(PhaseEvent phaseEvent) :
// Redirect to index.html
NavigationHandler nh = fctx.getApplication().getNavigationHandler();
String action_outcome = "/index.html";
nh.handleNavigation(fctx, null, action_outcome);
My web.xml is as follow :
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID"
version="3.0">
<context-param>
<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.xhtml</param-value>
</context-param>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<filter-mapping>
<filter-name>Seam Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>trinidad</filter-name>
<servlet-name>Faces Servlet</servlet-name>
<dispatcher>FORWARD</dispatcher>
<dispatcher>REQUEST</dispatcher>
</filter-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.seam</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<security-constraint>
<display-name>Restrict raw XHTML Documents</display-name>
<web-resource-collection>
<web-resource-name>XHTML</web-resource-name>
<url-pattern>*.xhtml</url-pattern>
</web-resource-collection>
<auth-constraint/>
</security-constraint>
<login-config>
<auth-method>BASIC</auth-method>
</login-config>
</web-app>
I do not have index.xhtml in my app, but I do have and want to keep it index.html file.
Why is my outcome_action given to NavigationHandler rename to index.xhtml ?
How could I avoid it ?

Answer 1

The NavigationHandler expects a JSF page, not a non-JSF page. Moreover, you're there actually not sending a real redirect at all, on the contrary to what the code comment says there. You're just performing a forward here.
Performing a real redirect would be the solution to your problem. It's to be done as below:
ExternalContext ec = FacesContext.getCurrentInstance().getExternalContext();
ec.redirect(ec.getRequestContextPath() + "/index.html");
See also:
What is the difference between redirect and navigation/forward and when to use what?
How to navigate in JSF? How to make URL reflect current page (and not previous one)
Unrelated to the concrete problem, doing authorization job in a phase listener stinks. Have you considered a servlet filter?
See also:
Limitations of using a PhaseListener instead of a Servlet Filter for authorization
Failing to redirect from JSF phaselistener
How to invalidate session in JSF 2.0?