In a J2EE application, how do I create a global Filter that can access other webapps installed on that app server?
A:
There is no way to do this in a container/platform independent way. Your J2EE container might provide hooks for you to do this though.
Kevin
2010-01-20 22:15:34
+1
A:
The Servlet-API does not provide such a security leak. But some containers offer alike. Have a look at the <Valve> Configuration of Apache Tomcat. Maybe there is a similar functionality for webshere, but typically you need to hire a ibm consultant to "find" the configuration.
Arne Burmeister
2010-01-20 22:36:51
+1
A:
Some application servers/servlet containers (Tomcat, JBoss) provide the cross context feature. It does depend on what you're running your application within however, it's not a J2EE feature.
http://tomcat.apache.org/tomcat-5.5-doc/config/context.html
I'm not sure whether this will help you in what you want to do. What is it exactly? : )
Take a look at this response as well:
Jon
2010-01-20 22:42:20
Like JBoss, Websphere also uses Tomcat under the hoods and if I recall my rusty Websphere experiences correctly, the very similar `crossContext` setting is just available at Websphere. This way you could create a webapp which runs on the ROOT and run the filter on `/*`. But again, that's the theory, I can't confirm this from own experience. Alternatively you could declare the filter in appserver's own `web.xml`. +1 for the hint regardless :)
BalusC
2010-01-20 22:50:17