I receive the attached null pointer exception when the session is expired , while it should direct to the log in page ,
when i removed the



<display-name>Ajax4jsf Filter</display-name>
<filter-name>ajax4jsf</filter-name>
<filter-class>org.ajax4jsf.Filter</filter-class>

<filter-mapping>
<filter-name>ajax4jsf</filter-name>
<servlet-name>Faces Servlet</servlet-name>
REQUEST
FORWARD
INCLUDE
</filter-mapping>

from the web.xml it has worked and it is redirecting me to the log in page without having the null pointer exception


javax.faces.FacesException: javax.servlet.ServletException: java.lang.NullPointerException at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:327) at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130) at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108) at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:233) at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108) at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:233) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87) at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.1) ].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)