about webservice exception process

[L. J.W]

Hi all,how can I process exception in tuscany,for example:service provide
throw BizRuntimeException when process bizMethod,service consumer(don't know
BizRuntimeException at all ) can only receive:

org.osoa.sca.ServiceRuntimeException:
org.apache.tuscany.sca.interfacedef.util.FaultException:
com.wiscom.tuscany.demo.baseinfo.BizException

any framework or util to process this common issue?

Thanks.