osgi - Cannot retrieve BundleContext in a web application -


i have added following bundles can deploy war (web application) osgi framework.i use "apache felix distribuable binary" :

   32|active     |   20|ops4j pax logging - api (1.7.0)    33|active     |   20|ops4j pax logging - service (1.7.1.snapshot)    34|active     |   20|ops4j pax url - mvn: (1.3.5)    35|active     |   20|ops4j pax url - war (1.3.5)    36|active     |   20|ops4j pax url - wrap: (1.3.5)    37|active     |   20|ops4j pax web - api (1.1.12)    38|active     |   20|ops4j pax web - fileinstall deployer (1.1.12)    39|active     |   20|ops4j pax web - extender - war (1.1.12)    40|active     |   20|ops4j pax web - extender - whiteboard (1.1.12)    41|active     |   20|ops4j pax web - jetty bundle (1.1.12)    42|active     |   20|ops4j pax web - jsp support (1.1.12)    43|active     |   20|ops4j pax web - runtime (1.1.12)    44|active     |   20|ops4j pax web - service spi (1.1.12)

so, used simple struts 2 application (hello world) test, created war , put in "file install" directory, , became active, , can see welcome page.
after this, tried retrieve bundlecontext can use registered services war, have added:

bundlecontext ctx = (bundlecontext) servletactioncontext.getservletcontext().getattribute("osgi-bundlecontext");

but, found exception:

"java.lang.classcastexception: org.apache.felix.framework.bundlecontextimpl cannot cast org.osgi.framework.bundlecontext"

what can problem ?

thanks

making answer discussion in comments:

you have mentioned class twice in classpath. ones exists in osgi container , ones included in jar file. pax modules import class osgi container while webapp imports external jar file.

in case jar included in web-inf/lib. using maven should set scope of osgi-core dependency provided.


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