Requirements of a JAX-WS Endpoint

JAX-WS endpoints must follow these requirements:

• The implementing class must be annotated with either the javax.jws.WebService or javax.jws.WebServiceProvider annotation.

• The implementing class may explicitly reference an SEI through the endpointInterface element of the @WebService annotation, but is not required to do so. If no endpointInterface is specified in @WebService, an SEI is implicitly defined for the implementing class.

• The business methods of the implementing class must be public, and must not be declared static or final.

• Business methods that are exposed to web service clients must be annotated with javax.jws.WebMethod.

• Business methods that are exposed to web service clients must have JAXB-compatible parameters and return types. See Default Data Type Bindings.

• The implementing class must not be declared final and must not be abstract.

• The implementing class must have a default public constructor.

• The implementing class must not define the finalize method.

• The implementing class may use the javax.annotation.PostConstruct or javax.annotation.PreDestroy annotations on its methods for life cycle event callbacks.

  The @PostConstruct method is called by the container before the implementing class begins responding to web service clients.

  The @PreDestroy method is called by the container before the endpoint is removed from operation.