JSF query string parameters

Question

I've probably completely missed something foundational here coming from a classic ASP world, but I'm completely new to JSF and Java. I can't seem to be able to append a query string to my initial page request without it generating an error.

If I type http://localhost:8080/fooBean in my browser there's no error, however, if I use http://localhost:8080/fooBean/index.xhtml?param1=value&param2=value2 it generates the following error:

WELD-001303 No active contexts for scope type javax.enterprise.context.SessionScope

@Named(value = "fooBean")
@SessionScoped
public class fooBean implements Serializable {
    ...
}

Any help or clarification would be greatly appreciated.

Thank you.