Handle Special Character in Interceptor

Hi
We are sending special character from request SOAP body in apache CXF service. when we are getting soap request in receive interceptor all special character coming as "????" mark instead of character we sent.
Please let us know how we can handle special character in apache cxf service. We have already tried with UTF-8 and UTF-16 but but still face same problem. We are handling special character in our existing service
we are new to Apache cxf service therefore need help if any thing need to do handle special character request in CXF internally .
Please find below example of special character

Одноместный
雙人房最
Я люблю тебя

Thanks in advance