according to our current implementation this is not possible and there's no workaround available to achieve that :-(
did you solve the problem?
i have the same...
We are currently writing an interceptor to add the xml declaration to the top of the response. I'll let you know how it goes. Hope to get it working later today or tomorrow.
does your interceptor work now?
There's no need for an interceptor. I believe what is needed is for SOAPMessageImpl to heed certain system properties. I created issue JBWS-2178 for this.