Jersey2 provides inbuilt support for Jackson and JAXB. But Jibx is not supported by default. To use Jibx in conjunction with Jersey2, we are taking the XML input as a stream and after receiving the request, we are parsing it using Jibx. But there is actually a better way of achieving the same using MessageBodyReader and MessageBodyWriter APIs. Here is how this can be achieved:
 
 
 
 
 
 

1. Define a new provider for consuming XML which uses Jibx
2. Register it with Jersey ResourceConfig

@Provider
public class JibxXmlProvider implements MessageBodyReader<Object>, MessageBodyWriter<Object> {

	public boolean isReadable(Class<?> type, Type genericType,
			Annotation[] annotations, MediaType mediaType) { 

		if(!MediaType.APPLICATION_XML_TYPE.equals(mediaType)){
			return false;
		}

		try {
			BindingDirectory.getFactory( type );
		} catch (JiBXException e) {
			return false;
		}
		return true;
	}
	
	public boolean isWriteable(Class<?> type, Type genericType,
			Annotation[] annotations, MediaType mediaType ) { 
		
		if(!MediaType.APPLICATION_XML_TYPE.equals(mediaType)){
			return false;
		}
		
		try {
			BindingDirectory.getFactory( type );
		} catch (JiBXException e) {
			return false;
		}
		return true;
	}

	public Object readFrom(Class<Object> type, Type genericType,
			Annotation[] annotations, MediaType mediaType,
			MultivaluedMap<String, String> httpHeaders, InputStream entityStream)
					throws IOException, WebApplicationException {
		try {
			IBindingFactory factory = BindingDirectory.getFactory( type );
			IUnmarshallingContext context = factory.createUnmarshallingContext();
			return context.unmarshalDocument( entityStream, null ); 
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}
	
	public void writeTo(Object obj, Class<?> type, Type genericType,
			Annotation[] annotations, MediaType mediaType,
			MultivaluedMap<String, Object> headers, OutputStream outputStream)
					throws IOException, WebApplicationException {
		try {
			IBindingFactory factory = BindingDirectory.getFactory( type );
			IMarshallingContext context = factory.createMarshallingContext();
			context.marshalDocument( obj, "UTF-8", null, outputStream );
		}
		catch ( Exception e ) {
			e.printStackTrace();
		} 
	}
	
	public long getSize(Object obj, Class<?> type, Type genericType,
			Annotation[] annotations, MediaType mediaType ) {
		return -1;
	}

}

Once this class is defined, register it with Jersey as follows:

public class JerseyResourceInitializer extends ResourceConfig {

 public JerseyResourceInitializer() {
 packages(true, "com.adaequare.processing.service");
		
		// This line registers JibxXmlProvider as a new provider.
 register(JibxXmlProvider.class, MessageBodyReader.class, MessageBodyWriter.class);
 }

}

After this configuration, when ever a new request comes, isReadable method of JibxXmlProvider is called. If it evaluates to true, then readFrom is called for object conversion.

Hope this helps!