Add default namespace to an element within soap body - soap

Question

I have generated a web-service client (JAX-WS) and model from wsdl and xsd. I have problem with namespaces within soap body.
Lets assume we have two classes:
#XmlRootElement(namespace="aNamespace") class A {
#XmlAnyElement(lax = true) Object obj;
}
#XmlRootElement(namespace="bNamespace") class B {...}
The object I want to send is 'a':
A a = new A();
a.obj = new B();
The service I am calling expects either of V1 or V3 requests:
V1
...
<soapenv:Body>
<A xmlns="aNamespace">
<B xmlns="bNamespace">
<B1>...</B1>
<B2>...</B2>
</B>
</A>
</soapenv:Body>
...
V3
...
<soapenv:Body>
<a:A xmlns:a="aNamespace">
<b:B xmlns:b="bNamespace">
<b:B1>...</b:B1>
<b:B2>...</b:B2>
</b:B>
</a:A>
</soapenv:Body>
...
Trying to call the service I see following request generated:
V2
...
<soapenv:Body>
<a:A xmlns:a="aNamespace", xmlns:b="bNamespace">
<b:B>
<b:B1>...</b:B1>
<b:B2>...</b:B2>
</b:B>
</a:A>
</soapenv:Body>
...
And the service returns error.
Can I somehow set a default namespace to B(so that I will see <B xmlns="bNamespace">)?

Answer 1

I solved the problem by marshaling B into DOM object. Then I put the created DOM into A.
B b = new B();
Document bDocument = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
JAXBContext.newInstance(B.class).createMarshaller().marshal(b, bDocument);
A a = new A();
a.obj = bDocument;
It produces some weird result, however the web-service accepts it:
...
<soapenv:Body>
<a:A xmlns:a="aNamespace" xmlns:ab="bNamespace">
<b:B xmlns:b="bNamespace">
<b:B1>...</b:B1>
<b:B2>...</b:B2>
</b:B>
</a:A>
</soapenv:Body>
...