JavaSerialiazation error with primitive types

[techexplorer0310]

When we use JavaSerialization and if the object being serialized has primitive fields like int, char etc then we can ClassNotFoundException for int.class. Earlier ObjectInputStream was used to resolveClass which was handling this.
In the latest version ObjectInputStreamWithKryoClassLoader is used which does not handle this

To Reproduce
Use java serialization and read an object which has int field type.

Environment:

• OS: All
• JDK Version: 17
• Kryo Version: 5.0

[theigl]

@techexplorer0310: Could you please create reproducer for this issue?

[theigl]

I briefly looked into this and it looks like that ObjectInputStreamWithKryoClassLoader should fall back on the default class loader instead of simply re-throwing the exception.

If you can't reproduce this issue in a simple test, could you register you own JavaSerializer that uses the following method to resolve class?

protected Class resolveClass (ObjectStreamClass type) {
	try {
		return Class.forName(type.getName(), false, kryo.getClassLoader());
	} catch (ClassNotFoundException ignored) {
		// ignored
	}
	try {
		return super.resolveClass(type);
	} catch (ClassNotFoundException ex) {
		throw new KryoException("Class not found: " + type.getName(), ex);
	} catch (IOException ex) {
		throw new KryoException("Could not load class: " + type.getName(), ex);
	}
}

[theigl]

Should be fixed. Please verify against the latest SNAPSHOT.