The Java EE 5 Tutorial (PDF) - Oracle Software Downloads

Undeploying the cart Example
To undeploy cart.ear using NetBeans IDE:
1. Click the Services tab.
2. Expand the Servers node and locate the Application Server instance to which you deployed
cart.
3. Expand your Application Server instance node, then Applications→Enterprise
Applications.
4. Right-click cart and select Undeploy.
To undeploy cart.ear using Ant, enter the following command:
ant undeploy
AWeb Service Example: helloservice
This example demonstrates a simple web service that generates a response based on
information received from the client. HelloServiceBean is a stateless session bean that
implements a single method, sayHello. This method matches the sayHello method invoked by
the client described in “A Simple JAX-WS Client” on page 482.
TheWeb Service Endpoint Implementation Class
HelloServiceBean is the endpoint implementation class. The endpoint implementation class is
typically the primary programming artifact for enterprise bean web service endpoints. The web
service endpoint implementation class has the following requirements:
■ The class must be annotated with either the javax.jws.WebService or
javax.jws.WebServiceProvider annotations.
AWeb Service Example: helloservice
■ 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” on page 491.
■ The implementing class must not be declared final and must not be abstract.
Chapter 22 • Session Bean Examples 663