(the jws suggests to me that you are using Axis 1.x) Have a look at Creating Web Services with Apache Axis. In the later part it explains how to generate a client stub and then uses it in a command-line program. You should be able to use that stub directly in a servlet.
J2EE Tutorial; Web Services Clients; Application Client shows how to acquire the client stub though JNDI, provided that you have set up the <service-ref> deployment descriptor in the web.xml (Tomcat 5.5 probably doesn't support the <service-ref> descriptor). [ July 20, 2007: Message edited by: Peer Reynders ]