It seems that your programs are within one package.
Try to ask yourself how the server or client can get your classes in the
http server.
The error "multipi.Interaction_Stub not found" says that in your code base,
there is
no multipi directory.
regards
yangyuexiang
James Sinnamon wrote:
> Dear Java Linux developers/users,
>
> (The following has already been sent to
> [EMAIL PROTECTED], but I am sending it here, on
> the off chance, that my problem might have something
> to do with the Blackdown java port. My apologies if
> it is not related to this list. BTW, is there a
> 'debug' mode for rmiregistry?) ....
>
> (Dear RMI users,)
>
> Can you please help me with this problem I am having trying to establish
> a connection between Server and client. The server process(es) seem to
> properly register with rmiregistry, the client process, succeeds in
> looking up the server process, but I get a ClassNotFoundException
> message.
>
> I am running RedHat linux ver 6.1, and am using the Blackdown ver 1.2.2
> SDK (or JDK - what is the correct term?)
>
> Included below are :
>
> 1. ClassNotFoundException error message
> 2. Naming.lookup() statement in client code
> 3. server shell script
> 4. security policy file (all permissions)
> 5. output when I run the RMI server shell script
> 6. output from httpd after startup of server process(es).
> 7. client shell script
> 8. codebase (httpd) directories.
>
> 1. When I run the client program. I get the message:
>
> java.rmi.UnmarshalException: error unmarshalling return; nested
> exception is:
> java.lang.ClassNotFoundException: multipi.Interaction_Stub
>
> 2. The code where the message is generated is :
>
> System.out.println("Contoller state : ST_INITIAL");
> for(i = 0;i < intnCount; i++) {
> try {
> System.out.println("[ here ]");
> InteractionI iInterface
> = (InteractionI)
> Naming.lookup("rmi://gothamcity.sci.usq.edu.au/" + intnList[i]);
>
> ... the client is trying to connect to a server processes which are
> registered with rmiregestry with the names 'interaction0', etc
> 'interaction1' etc. The class name of the interface is 'InteractionI'
> and the implementation name is 'Interaction'.
>
> Naming.lookup() call is clearly working, otherwise, I would
> get a java.rmi.NotBoundException message.
>
> 3. Here is the script to run the server process(es):
>
> #!/bin/sh
> ClassPath=$HOME/66401/classes/:$HOME/public_html/classes/
> CodeBase=http://smaug.sci.usq.edu.au:8080/~sinnamon/classes/
> java -cp ${ClassPath} -Djava.rmi.server.codebase=${CodeBase}
> -Djava.security.policy=./policy -Djava.rmi.server.logCalls=true
> multipi.Interaction $1
>
> 4. the (security) file, 'policy', is simply :
>
> grant {
> // Allow everything for now
> permission java.security.AllPermission;
> };
>
> 5. When I run the server script, I get the message:
>
> [sinnamon@gothamcity multipi]$ ./runServer.sh interaction0
> Tue May 23 00:28:21 GMT+10:00 2000:RMI:RMI TCP
> Connection(2)-139.86.101.55:[139.86.101.55:
> sun.rmi.transport.DGCImpl[0:0:0, 2]: java.rmi.dgc.Lease
> dirty(java.rmi.server.ObjID[], long, java.rmi.dgc.Lease)]
> interaction0 bound in registry
>
> 6. After this is run, I observe the following in the httpd log file :
>
> gothamcity.sci.usq.edu.au - - [23/May/2000:00:28:21 +1000] "GET
> /~sinnamon/classes/multipi/Interaction_Stub.class HTTP/1.0" 200 3559
>
> (This raises the question : why the _Stub class and not the _Skel class?
> Doesn't the server need to get hold of the Skel class at some point,
> since
> it is suppopsed to communicate through the _Skel class?)
>
> 7. here is the shell script to run the client process :
>
> --------------------------------------------------------------------
>
> ClassPath=$HOME/66401/classes/
> CodeBase=http://gothamcity.sci.usq.edu.au:8080/~sinnamon/classes/
>
> java -cp ${ClassPath} multipi.Interactor interaction0 interaction1
>
> ----------------------------------------------------------------------
>
> (I have left out the parameter,
> "-Djava.rmi.server.codebase=${CodeBase}",
> because it has no effect, and, besides, it doesn't seem to be necessry
> at the client end (am I right?))
>
> ----------------------------------------------------------------------
>
> 8. the codebase directories are :
>
> [sinnamon@gothamcity classes]$ pwd
> /home/sinnamon/public_html/classes
> [sinnamon@gothamcity classes]$ ls -al
> total 14
> drwxrwxr-x 9 sinnamon sinnamon 1024 May 21 15:00 .
> ...
> drwxrwxr-x 2 sinnamon sinnamon 1024 May 21 13:56 multipi
> [sinnamon@gothamcity classes]$ ls -al multipi/
> total 15
> drwxrwxr-x 2 sinnamon sinnamon 1024 May 21 13:56 .
> drwxrwxr-x 9 sinnamon sinnamon 1024 May 21 15:00 ..
> -rw-rw-r-- 1 sinnamon sinnamon 1873 May 21 14:27
> Interaction_Skel.class
> -rw-rw-r-- 1 sinnamon sinnamon 2288 May 21 14:27
> Interaction_Skel.java
> -rw-rw-r-- 1 sinnamon sinnamon 3559 May 21 14:27
> Interaction_Stub.class
> -rw-rw-r-- 1 sinnamon sinnamon 3518 May 21 14:27
> Interaction_Stub.java
>
> ------------------------------------------------------------------------
> --
>
> Could someone out there please tell me what I have missed, or where else
> to look for the problem.
>
> TIA
>
> James Sinnamon
>
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