title: Spring Web Service Template: Add username token
body: <p>I have a web app that acts as a client to a Jax-WS web service implemented using Spring WS. The Spring WS is configured to require a username token in the SOAP header. In the web app I plan to use the Spring web service template but I can't seem to find any examples which show how to add a UsernameToken to the outgoing request.</p>
  
  <p>Can someone point me in the right direction?</p>
  
  <p>Thanks.</p>