Getting Started with WebSphere Application Server

94 Getting Started with WebSphere Application Server Community Edition
public class TestServlet extends HttpServlet {
...
@EJB(name=”HelloEJB”)
private HelloInterfaceLocal helloejb;
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws
ServletException, IOException {
response.getWriter().println(ejb.sayHello());
}
...
}
Listing 5.6 - Using the @EJB annotation
With @EJB, helloejb will reference to an EJB named HelloEJB. If there is only one
implementation for HelloInterfaceLocal, the name value can be omitted in the @EJB
annotation.
5.3.1.2 Add the EJB into the dependency list of the servlet
As mentioned earlier, the deployment plan of an EJB project is called openejb-jar.xml
and all dependencies should be declared there. If you want to reference an EJB, add it as
a dependency in the deployment plan. Listing 5.7 provides an example.
...
default
TestWeb
1.0
car
default
TestEjb
1.0
car
...
Listing 5.7 - Adding an EJB as a dependency in the deployment plan
As you can see, the dependency declaration here is similar to the EJB definition in
openejb-jar.xml of Listing 5.5.