Marco Waimer created DIRMINA-930:
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Summary: Problems with ObjectSerializationCodecFactory using MINA
in between Java 6 and Java 7
Key: DIRMINA-930
URL: https://issues.apache.org/jira/browse/DIRMINA-930
Project: MINA
Issue Type: Bug
Components: Core
Affects Versions: 2.0.7
Environment: Windows 7, Java 7, Java 6
Reporter: Marco Waimer
Priority: Critical
Fix For: 2.0.8
We use mina with the
*org.apache.mina.filter.codec.serialization.ObjectSerializationCodecFactory*
for our communication framework. Using Java 7 on one side (i.e. server) and
Java 6 on the other side (i.e. client) leads to problems with the
deserialisation, in our case with a *java.util.Locale* object, which has
additional fields in Java 7. See attached stack traces.
We tracked the problem to
*org.apache.mina.core.buffer.AbstractIoBuffer.putObject(Object)* and
*org.apache.mina.core.buffer.AbstractIoBuffer.getObject(ClassLoader)*, since
this part is overriding java serialisation and omitting some class information,
which will be needed for the deserialisation.
Using the attached example the stack traces could easily be reproduced, running
one part with Java 7 and the other with Java 6. The _MinaServer_ will simply
open a port and the _MinaClient_ will send a *java.util.Locale* object to that
port.
In MINA 1.1.7 _ObjectOutputStream_ and _ObjectInputStream_ were used without
overriding _writeClassDescriptor_, therefore the problem does not exist there.
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