Suggestion for best standard API protocol to be used in web services in a javaEE server?

We have not used Webservices yet(in fact we are new to JavaEE infrastructure), I am looking at JAX-WS as the webservice format, but I am not sure if there are still new开发者_运维技巧ly emerge better solutions out there that we may try instead. We can choose which standards we wanted to use, and clients that will be using the webservices will in a way also used that standard.

Any idea is very much appreciated.

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JAX-WS is good and mature. So stick with it, if you need SOAP services.
If you don't need the rigidness of SOAP, you can use RESTful services. JAX-RS is the standard for that.

Btw, it is no longer called "j2ee". It's JavaEE now.