Could web services endpoint validate inbound request automatically?

[HankITSP]

I exposed a java class to be a web services. I take the document style Web services and input parameter of exposed method is an complex type defined in WSDL file. I wonder could we validate the inbound request XML against that complex type's schema automatically ? If inbound XML string don't match the defined schema, I don't want this SOAP message goes into business logic.
Any advices or suggestions are welcomed, thanks in advance!