title: How to add JAX-RS to an existing project
body: <p>I am using Java EE, Java 1.7, glassfish 3 and Eclipse Indigo. I have an existing web project that I built from this tutorial: <a href="http://www.tech-juice.org/2012/05/13/hello-world-with-jsf-2-0-glassfish-3-maven-svn-and-eclipse/#comment-10560" rel="nofollow">http://www.tech-juice.org/2012/05/13/hello-world-with-jsf-2-0-glassfish-3-maven-svn-and-eclipse/#comment-10560</a>.  Now, I want to add RESTful web services to the project.  I go to Project -> properties, Project Facets and check JAX-RS. I then click the link that says "Further configuration needed". I give a servlet class name. I am now told that "At least one user library must be selected."</p>
  
  <p>What does this mean?</p>
  
  <p>I have looked, but, not seen a tutorial on adding JAX-RS to an existing project.</p>
  
  <p>Thanks,
  Scott</p>