It is a long time since I did anything with RMI. But I see your client successfully calls the server, which tries to return to you the instance of com.notehive.osgi.rubis.hibernate_osgi_rubis.web.browsereg.IServletRemote, and the client fails to create an object of this class since it can not access the class file. Is the package "com.notehive.osgi.rubis.hibernate_osgi_rubis.web.browsereg" visible on your client side? You also seem to be running some form of middleware (ch.ethz.iks.r_osgi.imp) that does reflection. So I guess it could be anywhere down that line that the OSGI classloader tricks you, when the middleware/RMI picks a wrong classloader to use for reflection.Just guessing.
2011/4/6 Nima Kaviani <[email protected]> > Hi all, > > I am trying to write an RMI client bundle on top of Felix to lookup and > import an object from an RMI registry; but my efforts fail with the > following error: > > java.rmi.UnmarshalException: error unmarshalling return; nested exception > is: > java.lang. > ClassNotFoundException: > com.notehive.osgi.rubis.hibernate_osgi_rubis.web.browsereg.IServletRemote > (no security manager: RMI class loader disabled) > at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source) > at > > com.notehive.osgi.rubis.hibernate_osgi_rubis.web.core.SpringHttpWrapperImpl.register(SpringHttpWrapperImpl.java:102) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > > ch.ethz.iks.r_osgi.impl.ChannelEndpointImpl.handleMessage(ChannelEndpointImpl.java:1140) > at > > ch.ethz.iks.r_osgi.impl.ChannelEndpointImpl$2.run(ChannelEndpointImpl.java:295) > at > > ch.ethz.iks.r_osgi.impl.ChannelEndpointImpl$1.run(ChannelEndpointImpl.java:258) > Caused by: java.lang.ClassNotFoundException: > com.notehive.osgi.rubis.hibernate_osgi_rubis.web.browsereg.IServletRemote > (no security manager: RMI class loader disabled) > at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:535) > at > java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:628) > at > java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:294) > at > > sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:238) > at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1530) > at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1492) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1731) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328) > at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350) > ... 9 more > > I am not sure if this is due to a classloading problem or a java security > issue. > > For class loading I am using utilities from Pax Swissbox Core combined with > parts of Pax Exam's client code: > > if( _remoteServlet == null ) > { > Throwable reason = null; > long startedTrying = System.currentTimeMillis(); > try { > ContextClassLoaderUtils.doWithClassLoader(null, new > Callable<Object>() { > public Object call() throws Exception { > try { > _registry = LocateRegistry.getRegistry( > SpringHttpWrapperImpl.PORT ); > }catch(Exception e){ > e.printStackTrace(); > } > return null; > } > }); > } catch (Exception e1) { > e1.printStackTrace(); > } > try > { > _remoteServlet = > (IServletRemote) _registry.lookup( > SpringHttpWrapperImpl.STUB_NAME ); > while( _remoteServlet == null > && System.currentTimeMillis() < startedTrying + 1000 > ); > } catch( ConnectException e ) { > reason = e; > } catch( NotBoundException e ) { > reason = e; > } catch( RemoteException e ) { > reason = e; > } > if( _remoteServlet == null ) > reason.printStackTrace(); > } > > I also have Felix Security Framework in place and the following policy file > configured. > > grant { > permission java.security.AllPermission; > }; > > The part that triggers the error is the code below where I try to lookup > for > the class from the RMI registry: > > _remoteServlet = (IServletRemote) _registry.lookup( > SpringHttpWrapperImpl.STUB_NAME ); > > very much would appreciate any hints on what could be wrong. > -Nima > > > -- > http://nima.magic.ubc.ca >
