Seam without JSF + Servlet

[reind]

My application is deployed as an EAR with multiple webapps. One of the webapps has a single servlet within which I'd like to use a Seam component. Seam works on the other JSF webapp in the same ear, but I can't get it to work on the servlet.

I've added a context-filter for the same url-pattern as the servlet uses (as described in the Seam docs):

components.xml

<web:context-filter url-pattern="/request/*" />

web.xml

<servlet-mapping>
 <servlet-name>Controller</servlet-name>
 <url-pattern>/request/*</url-pattern>
 </servlet-mapping>

The seam components that are in the jar are getting picked up by the ComponentScanner but when I try to inject or use Components.getIntance(...), I get:

java.lang.IllegalStateException: No application context active
 org.jboss.seam.Component.forName(Component.java:1577)
 org.jboss.seam.Component.getInstance(Component.java:1627)
 org.jboss.seam.Component.getInstance(Component.java:1610)
 org.jboss.seam.Component.getInstance(Component.java:1604)

but I do have the listener configured in web.xml

<listener>
 <listener-class>org.jboss.seam.servlet.SeamListener</listener-class>
 </listener>

Any ideas?

[reind]

Needed the Seam Filter in web.xml...

 <filter>
 <filter-name>Seam Filter</filter-name>
 <filter-class>org.jboss.seam.web.SeamFilter</filter-class>
 </filter>
 <filter-mapping>
 <filter-name>Seam Filter</filter-name>
 <url-pattern>/request/*</url-pattern>
 </filter-mapping>

Works now.