How to implement ObjectDecoder(ClassResolver) in Netty 3.2.7

Question

In netty version 3.2.5 in method

public ChannelPipeline getPipeline() throws Exception { ... }

have a decoder defined as follows:

pipeline.addLast("decoder", new ObjectDecoder());

I have upgraded to Netty version 3.2.7 which has the ObjectDecoder() deprecated and it now requires a ClassResolver. Does anyone have a code example of how to implement the new ObjectDecoder(ClassResolver) in the getPipeline() method in version 3.2.7?

Veebs · Accepted Answer · 2011-12-28 22:10:41Z

1

Here's the documentation on Netty ClassResolver.

http://netty.io/docs/stable/api/org/jboss/netty/handler/codec/serialization/ClassResolvers.html

Pick the class resolver that best meets your requirements.

I think you maybe able to do something like this:

new ObjectDecoder(ClassResolvers.weakCachingConcurrentResolver(null))

answered Dec 28, 2011 at 22:10

Veebs

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3 Comments

Ray Over a year ago

Veebs thanks for that solution which works. I now have an exception (which is not related to this solution). The exception occurs when the client sends the message to the server. I have posted the first part of this exception. Does anyone know how this can be resolved. java.io.InvalidClassException: failed to read class descriptor at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1567) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)

Veebs Over a year ago

Hi, this link may be of help: markmail.org/message/4ftws33dxehbzbwd. Try specifying a ClassLoader. You may want to mark this question as answered and open another question if you still have problems. Thanks.

Stephane Grenier Over a year ago

@Veebs: I see it in the code but not in the API (javadocs)... What exactly does this do and mean?

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