Client Unmarshaling Eception

Question

when I run my client program:
public class ComputePi {
public static void main(String args[]) {
String name="";
System.setSecurityManager(new RMISecurityManager());
try {
name = java.net.InetAddress.getLocalHost().getHostName();
catch(Exception e) {
e.printStackTrace();
try {
name = "Compute";
Compute comp = (Compute) Naming.lookup(name);
Pi task = new Pi(Integer.parseInt("2"));
BigDecimal pi = (BigDecimal) (comp.executeTask(task));
System.out.println(pi);
} catch (Exception e) {
System.err.println("ComputePi exception: " + e.getMessage());
e.printStackTrace();
I get exception below:
omputePi exception: error unmarshalling return; nested exception is:
     java.lang.ClassNotFoundException: access to class loader denied
java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
     java.lang.ClassNotFoundException: access to class loader denied
     at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
     at java.rmi.Naming.lookup(Naming.java:84)
     at client.ComputePi.main(ComputePi.java:24)
Caused by: java.lang.ClassNotFoundException: access to class loader denied
     at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:424)
     at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:165)
     at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:631)
     at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:257)
     at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:200)
     at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1513)
     at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1435)
     at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1626)
     at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
     ... 3 more
Caused by: java.security.AccessControlException: access denied (java.io.FilePermission C:\engine\classes\- read)
     at java.security.AccessControlContext.checkPermission(AccessControlContext.java:269)
     at java.security.AccessController.checkPermission(AccessController.java:401)
     at java.lang.SecurityManager.checkPermission(SecurityManager.java:524)
     at sun.rmi.server.LoaderHandler$Loader.checkPermissions(LoaderHandler.java:1132)
     at sun.rmi.server.LoaderHandler$Loader.access$000(LoaderHandler.java:1086)
     at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:388)
     ... 12 more

Answer 1

David Aharoni <[email protected]> writes:
I have a Tuxedo client that calls a WLS EJB.The code is based on the samples\examples\iiop\ejb\entity WLS example. My Entity bean though, is not container managed. When an object cannot be found on the EJB side a javax.ejb.FinderException is raised. This causes the C unmarshaling code that was generated by the idl compiler to blowup in:
operator>>(OBB::MarshalBuf & {...}, javax::ejb::FinderEx & {...})
when calling
mb.UnMarshalValue(::javax::ejb::_tc_FinderException, obj);
I have followed the standards demonstrated in the sample for ObjectNotFoundException
still, ObjectNotFoundException works but FinderException does not!
Does anybody have any idea about what can be wrong?My guess is that the exception actually thrown is not
FinderException but some derived subtype. The problem with the C++
mapping is you need to register in the client all the concrete
implementations that might come on the wire.
So find out what the actual exception is and generate IDL for it and
then register it with the orb.
andy