gistfile1.txt

not   
<jaxrs:server id="bookservice" address="/">
  <jaxrs:serviceBeans>
    <ref bean="bookstore"/>
    <ref bean="bookstoreInterface"/>
  </jaxrs:serviceBeans>
</jaxrs:server>

but 

<jaxrs:server id="bookservice" address="/">
  <jaxrs:serviceBeans all-beans="true">
    
  </jaxrs:serviceBeans>
</jaxrs:server>

All spring components marked with @Path as it will be exposed
@Path( "/userService/" )
@Service("userService#rest")
public class DefaultUserService
    implements UserService