Weird problems when packaging my own web service implementation in my deployment (e.g. SpringWS and CXF)

Issue

• I'm getting the following error when trying to use Metro (JAX-WS RI) in my deployment:

java.lang.Error: javax.xml.soap.SOAPException: Unable to create SAAJ meta-factoryProvider org.jboss.ws.core.soap.SAAJMetaFactoryImpl not found

• My SOAP Responses are missing data when using Spring WS. For example, this response:

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
   <SOAP-ENV:Header/>
   <SOAP-ENV:Body>
      <ns2:HelloResponse xmlns:ns2="http://example.jboss.com/">
         <ns2:message>Hello, World!</ns2:message>
      </ns2:HelloResponse>
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Is actually sent like this:

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
   <SOAP-ENV:Header/>
   <SOAP-ENV:Body>
      <ns2:HelloResponse xmlns:ns2="http://example.jboss.com/"/>
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

• I am packaging CXF in my application, and I'm getting this error when invoking a JAX-WS client proxy:

org.w3c.dom.DOMException: WRONG_DOCUMENT_ERR: A node is used in a different document than the one that created it.
    at org.apache.xerces.dom.ParentNode.internalInsertBefore(Unknown Source)
    at org.apache.xerces.dom.ParentNode.insertBefore(Unknown Source)
    at org.apache.xerces.dom.CoreDocumentImpl.insertBefore(Unknown Source)
    at org.apache.xerces.dom.NodeImpl.appendChild(Unknown Source)
    at org.jboss.ws.core.soap.SOAPDocument.appendChild(SOAPDocument.java:222)
    at org.jboss.ws.core.soap.SOAPPartImpl.appendChild(SOAPPartImpl.java:297)
    at org.apache.cxf.staxutils.W3CDOMStreamWriter.setChild(W3CDOMStreamWriter.java:114)
    at org.apache.cxf.staxutils.W3CDOMStreamWriter.newChild(W3CDOMStreamWriter.java:104)
    at org.apache.cxf.staxutils.W3CDOMStreamWriter.writeStartElement(W3CDOMStreamWriter.java:132)
    at org.apache.cxf.binding.soap.interceptor.SoapOutInterceptor.writeSoapEnvelopeStart(SoapOutInterceptor.java:122)
    at org.apache.cxf.binding.soap.interceptor.SoapOutInterceptor.handleMessage(SoapOutInterceptor.java:81)
    at org.apache.cxf.binding.soap.interceptor.SoapOutInterceptor.handleMessage(SoapOutInterceptor.java:61)
    at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
    at org.apache.cxf.endpoint.ClientImpl.doInvoke(ClientImpl.java:533)
    at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:463)
    at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:366)
    at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:319)
    at org.apache.cxf.frontend.ClientProxy.invokeSync(ClientProxy.java:88)
    at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:134)