I've now created an updated version of the context filter from an earlier blog post. This is now available as source code from my public subversion repository, and as a binary from my public maven repository.

The package name has changed slightly, so the web.xml configuration would now read:

<filter>
   <filter-name>contextFilter</filter-name>
   <filter-class>com.fatmoggy.ctx.ContextFilter</filter-class>
</filter>

<filter-mapping>
   <filter-name>contextFilter</filter-name>
   <url-pattern>/*</url-pattern>
</filter-mapping>

The Maven dependency information required to import this is:

<dependency>
   <groupId>com.fatmoggy.ctx</groupId>
   <artifactId>context-filter</artifactId>
   <version>0.3</version>
</dependency>

My public Maven repository is online at http://geeklondon.com/repository/. The subversion path to the filter source code is svn://fatmoggy.com/context-filter/