Major Description
The following line in JAXRSOutInterceptor.serializeMessage causes a ClassCastException if the headers are not of type MultivaluedMap.
MultivaluedMap<String, Object> responseHeaders =
(MultivaluedMap)message.get(Message.PROTOCOL_HEADERS);
We have an existing CXF out interceptor that we configure on the CXF bus which works with both SOAP and REST calls so when we add the protocol headers we use a standard HashMap. This worked fine in CXF 2.2 but when we tried upgrading to CXF 2.2.2 our REST services started failing. A few lines above that the code retrieves the headers and refers to them as a standard Map interface.