[Bug] NPE will occur when consumer lazy init and the consumer thread contextClassLoader is null

[Xwiam]

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Apache Dubbo Component

Java SDK (apache/dubbo)

Dubbo Version

3.2.0

Steps to reproduce this issue

1、consumer lazy init config
dubbo:consumer init=false
2、start your dubbo service
3、use arthas to invoke your dubbo service
you will get the NPE Exception

What you expected to happen

the invoke will be ok,not throw NPE Exception

Anything else

No response

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• Yes I am willing to submit a pull request on my own!

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[Xwiam]

#14478 (comment)

[Xwiam]

when mH2i.getSerializerFactory().getClassLoader() is null , the NPE exception will occur

https://github.com/apache/dubbo/blob/3.2/dubbo-serialization/dubbo-serialization-hessian2/src/main/java/org/apache/dubbo/common/serialize/hessian2/Hessian2ObjectInput.java#L113

public T readObject(Class cls, Type type) throws IOException, ClassNotFoundException {
if (!mH2i.getSerializerFactory().getClassLoader().equals(Thread.currentThread().getContextClassLoader())) {
mH2i.setSerializerFactory(hessian2FactoryManager.getSerializerFactory(Thread.currentThread().getContextClassLoader()));
}
return readObject(cls);
}