Hey Ben, Pretty sure you need to implement Serializable in the objects
in the collection. Don't think there's a way around it as serialized
objects is how the Hessian protocol works...
Ben Hood wrote:
Hi,
This is probably a newbie question but I couldn't google the solution.
If I try to serialize a List<WhateverType> using the writeObject()
method in the HessianOutput class, it throws an IllegalStateException
complaining that my WhateverType should be serializable (I've attached
a stack trace at the bottom).
By stepping through the code, it is apparent why this occurs, but I
find this a little bit counterintuitive - if Hessian defines the
binary encoding of arbitrary types, why do I need to use the Java
built in Serialization mechanism?
Surely this makes the List useless for cross-language purposes?
Or am I missing the point here?
Any help is appreciated,
Ben
----------------------
java.lang.IllegalStateException: Serialized class
org.mule.providers.hessian.MySummable does not implement
java.io.Serializable
at com.caucho.hessian.io.JavaSerializer.<init>(JavaSerializer.java)
at
com.caucho.hessian.io.SerializerFactory.getDefaultSerializer(SerializerFactory.java:200)
at
com.caucho.hessian.io.SerializerFactory.getSerializer(SerializerFactory.java)
at
com.caucho.hessian.io.HessianOutput.writeObject(HessianOutput.java:315)
at
com.caucho.hessian.io.CollectionSerializer.writeObject(CollectionSerializer.java)
at
com.caucho.hessian.io.HessianOutput.writeObject(HessianOutput.java:317)
at com.caucho.hessian.io.HessianOutput.call(HessianOutput.java:131)
at
com.caucho.hessian.client.HessianProxy.sendRequest(HessianProxy.java:225)
at com.caucho.hessian.client.HessianProxy.invoke(HessianProxy.java)
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