Hi, I have a puzzler and hope someone on this group might be able to give me a few
pointers as to where to look for a solution.... I am running the Tomcat 4.1.18 server
on a Win2000 machine and am developing a servlet which will act as an RMI client and
makes remote calls to another machine. For the most part this RMI link is working,
especially for remote method calls which pass and/or return simple Java objects such
as ints or strings. However, I have one method which I call that passes and returns a
more complex object (which has been declared as serializable) and it is with this
method that I am having a problem/puzzler.
For development purposes, I am using the Eclipse IDE with the Tomcat plugin. When I
run the Tomcat server from within the Eclipse IDE, and test out my servlet, everything
works fine including all RMI calls, and in particular the call to this remote method
to which I am passing and returning a more complex Java object!
However, when I run the Tomcat server standalone, when the servlet makes this
particular RMI call, to this method passing and returning the complex Java object, I
get the following exception:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception
is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.net.MalformedURLException: no protocol: Group/Tomcat
Note, the servlet has made a number of RMI calls to the remote object, successfully,
prior to making this particular call. Why this particular call works when Tomcat is
running within the Eclipse IDE and fails when Tomcat is running standalone has got me
puzzled! It does not matter whether I turn debugging on or off for the Tomcat server
either. I thought maybe there could be some kind of race condition but these calls
all occur within the main servlet thread, so I don't understand how that could be the
case. Nor can I come up with anything that might be timing related.... I have also
checked all supporting Jar files and made sure they were the same... Any ideas on
what else might be different between the Eclipse IDE and the Tomcat standalone
environment?
Any thoughts appreciated.... Marc....
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Do you think the software industry will ever make software
that is as easy and reliable for a user to use
as the automobile industry makes a car easy and reliable
for a user to drive?
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A man said unto the universe - "Sir, I exist!"
"However," replied the universe "I do not see where that creates in me a sense of an
obligation."
- Stephen Crane
