How can I prevent filter from getting applies to .html page?

Question

Hi,
I have a MyFaces filter that I don't want applied to pages ending in ".html". However, upon visiting the "/myapp/index.html" page of my application, I get an internal server error, and the stack trace indicates that the filter is being invoked. How can I prevent such a filter from being applied to ".html" pages? The stack trace and the web.xml file are below.
Thanks, - Dave
Error I get when visiting index.html page
####<Oct 30, 2008 8:46:44 AM MDT> <Error> <HTTP> <rhonti> <nps-supp-gui-ms-1> <[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1225378004500> <BEA-101020> <[weblogic.servlet.internal.WebAppServletContext@4f2189 - appName: 'nps_history_gui', name: 'nps_history_gui.war', context-path: '/nps_history_gui'] Servlet failed with Exception
java.lang.IllegalStateException: ExtensionsFilter not correctly configured. JSF mapping missing. JSF pages not covered. Please see: http://myfaces.apache.org/tomahawk/extensionsFilter.html
at org.apache.myfaces.renderkit.html.util.AddResourceFactory.throwExtensionsFilterMissing(AddResourceFactory.java:389)
at org.apache.myfaces.renderkit.html.util.AddResourceFactory.checkEnvironment(AddResourceFactory.java:349)
at org.apache.myfaces.renderkit.html.util.AddResourceFactory.getInstance(AddResourceFactory.java:279)
at org.apache.myfaces.webapp.filter.TomahawkFacesContextWrapper.<init>(TomahawkFacesContextWrapper.java:115)
at org.apache.myfaces.webapp.filter.TomahawkFacesContextFactory.getFacesContext(TomahawkFacesContextFactory.java:85)
at javax.faces.webapp.FacesServlet.prepareFacesContext(FacesServlet.java:307)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:141)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:525)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:261)
at com.myco.nps.im.plugin.NPSIMIntercepter.doFilter(NPSIMIntercepter.java:101)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at com.myco.nps_history.filters.NoCachingFilter.doFilter(NoCachingFilter.java:30)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3229)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2002)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1908)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1362)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
=================Begin web.xml=======================
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
<display-name>
nps_history_gui</display-name>
<filter>
<filter-name>extensionsFilter</filter-name>
<filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
<init-param>
<description>Set the size limit for uploaded files.
Format: 10 - 10 bytes
10k - 10 KB
10m - 10 MB
1g - 1 GB</description>
<param-name>uploadMaxFileSize</param-name>
<param-value>100m</param-value>
</init-param>
<init-param>
<description>Set the threshold size - files
below this limit are stored in memory, files above
this limit are stored on disk.
Format: 10 - 10 bytes
10k - 10 KB
10m - 10 MB
1g - 1 GB</description>
<param-name>uploadThresholdSize</param-name>
<param-value>100k</param-value>
</init-param>
</filter>
<filter>
<filter-name>No Caching Filter</filter-name>
<filter-class>com.myco.nps_history.filters.NoCachingFilter</filter-class>
</filter>
<filter>
<filter-name>SSOFilter</filter-name>
<filter-class>com.myco.nps.im.plugin.NPSIMIntercepter</filter-class>
<init-param>
<param-name>filter_conf_file</param-name>
<param-value>/export/third-party/etsbea/application_conf/wls_9.2.2/nps_history_gui_conf/nps_im_plugIn.properties</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>extensionsFilter</filter-name>
<url-pattern>*.jsf</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>extensionsFilter</filter-name>
<url-pattern>/faces/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>No Caching Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>SSOFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<description>Sets properties of History UI app</description>
<display-name>HistoryInitServlet</display-name>
<servlet-name>HistoryInitServlet</servlet-name>
<servlet-class>com.myco.nps_history.servlets.HistoryInitServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>HistoryInitServlet</servlet-name>
<url-pattern>/HistoryInitServlet</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>HistoryInitServlet</servlet-name>
<url-pattern>/refresh</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
==================End web.xml=======================

Answer 1

I got that error when using the request URL /myapp/ or /myapp/index.html.
Regarding,
At any way, you should map the ExtensionsFilter on the FacesServlet rather than on any url-pattern. Could you elaborate on what you mean? Maybe with an example?
Thanks, - Dave