Hi Tim, Jb, It's works,
Here the solution: Extension @Component(property = {"*osgi.jaxrs.extension=true*"}) @Produces(MediaType.APPLICATION_JSON) public class RestExceptionMapper implements ExceptionMapper<RestCommonException> { ...... ...... } Ressource @Component(property = { "*osgi.jaxrs.resource=true*" }, service=SayHelloRestService.class, immediate = true) @Produces(MediaType.APPLICATION_JSON) @Path("sayhello") public class SayHelloRestService { .... .... } The solution was, provides right property for ressources, and extension. Thx for your links, and help. Regards -- Sent from: http://karaf.922171.n3.nabble.com/Karaf-User-f930749.html