Error with JSF a4j + tomahawk + myfaces: Resources framework is not initialised, check web.xml for Filter configuration

Question

I am trying to use <a4j:commandLink> in my JSP and I get the following error that I don't understand at all:

Exception while calling encodeBegin on component : { Component-Path :
  [Class: org.ajax4jsf.framework.ajax.AjaxViewRoot,ViewId: /pages/clienteAM.jsp]
  [Class: javax.faces.component.html.HtmlForm,Id: clientesForm]
  [Class: javax.faces.component.html.HtmlDataTable,Id: cityList]
  [Class: javax.faces.component.UIColumn,Id: j_id88]
  [Class: javax.faces.component.html.HtmlDataTable,Id: telefonos]
  [Class: javax.faces.component.UIColumn,Id: j_id89]
  [Class: org.ajax4jsf.ajax.html.HtmlAjaxCommandLink,Id: j_id91]
}

Caused by: javax.faces.FacesException: 
Resources framework is not initialised, check web.xml for Filter configuration

My web.xml look like this:

<?xml version="1.0"?>
<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">

    <description>MyProject web.xml</description>

    <context-param>
        <param-name>org.jboss.jbossfaces.WAR_BUNDLES_JSF_IMPL</param-name>
        <param-value>true</param-value>
    </context-param>

    <!-- Configure tomahawk taglib -->
    <context-param>
        <param-name>facelets.LIBRARIES</param-name>
        <param-value>/WEB-INF/tomahawk.taglib.xml</param-value>
    </context-param>

    <!-- Use Documents Saved as *.xhtml -->
    <context-param>
        <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
        <param-value>.jsp</param-value>
    </context-param>

    <!-- Special Debug Output for Development -->
    <context-param>
        <param-name>facelets.DEVELOPMENT</param-name>
        <param-value>false</param-value>
    </context-param>

    <context-param>
        <param-name>facelets.BUILD_BEFORE_RESTORE</param-name>
        <param-value>true</param-value>
    </context-param>

    <context-param>
        <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
        <param-value>server</param-value>
    </context-param>

    <context-param>
        <param-name>org.apache.myfaces.SERIALIZE_STATE_IN_SESSION</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>org.apache.myfaces.COMPRESS_STATE_IN_SESSION</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>org.apache.myfaces.PRETTY_HTML</param-name>
        <param-value>true</param-value>
    </context-param>

    <context-param>
        <description>
            Validate managed beans, navigation rules and ensure that
            forms are not nested.
        </description>
        <param-name>org.apache.myfaces.VALIDATE</param-name>
        <param-value>true</param-value>
    </context-param>

    <context-param>
        <description>
            Treat readonly same as if disabled attribute was set for
            select elements.
        </description>
        <param-name>org.apache.myfaces.READONLY_AS_DISABLED_FOR_SELECTS</param-name>
        <param-value>true</param-value>
    </context-param>

    <context-param>
        <param-name>org.apache.myfaces.ADD_RESOURCE_CLASS</param-name>
        <param-value>org.apache.myfaces.component.html.util.StreamingAddResource</param-value>
    </context-param>

    <context-param>
        <description>
            Virtual path in the URL which triggers loading of resources
            for the MyFaces extended components in the ExtensionFilter.
        </description>
        <param-name>org.apache.myfaces.RESOURCE_VIRTUAL_PATH</param-name>
        <param-value>/faces/myFacesExtensionResource</param-value>
    </context-param>

    <context-param>
        <description>
            Check if the extensions-filter has been properly configured.
        </description>
        <param-name>org.apache.myfaces.CHECK_EXTENSIONS_FILTER</param-name>
        <param-value>true</param-value>
    </context-param>


    <!-- Extensions Filter -->
    <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>
      <display-name>Ajax4jsf Filter</display-name>
      <filter-name>ajax4jsf</filter-name>
      <filter-class>org.ajax4jsf.Filter</filter-class>
      <init-param>
       <param-name>forceparser</param-name>
       <param-value>false</param-value>
      </init-param>
    </filter>
    <filter-mapping>
      <filter-name>ajax4jsf</filter-name>
      <servlet-name>Faces Servlet</servlet-name>
      <dispatcher>REQUEST</dispatcher>
      <dispatcher>FORWARD</dispatcher>
      <dispatcher>INCLUDE</dispatcher>
    </filter-mapping>
    <filter-mapping>
        <filter-name>extensionsFilter</filter-name>
        <url-pattern>*.jsf</url-pattern>
    </filter-mapping>
    <listener>
        <listener-class>
            org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
    </listener>

    <!-- Faces Servlet -->
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <!-- Faces Servlet Mapping -->
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>

    <!-- Welcome files -->
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>
    <error-page>
        <exception-type>java.lang.Throwable</exception-type>
        <location>/index.jsp</location>
    </error-page>
</web-app>

Answer 1

Taken from RichFaces documentation :

There are some problems with different filters defined in the web.xml file clashing. To avoid these problems, the RichFaces filter must be the first one among other filters in the web.xml configuration file.

Try changing your web.xml file so that your RichFaces filter (aka Ajax4Jsf) comes before your extensionsFilter.