JBoss AS 7 security: how to get currently logged username?

jakarta-ee, jboss, jboss7.x, security

Solution

You should be able to use JAAS. Which is what JBoss 7 ought to be using.

The calling principal will be stored in a `SessionContext` which you can obtain by telling JBoss it's a resource.

@Resource 
private SessionContext context;

public void myAwesomeMethod() {
    String currentUser = context.getCallerPrincipal().getName();
}

If for some reason the Injection doesn't work on a Stateless bean, you can look up the EJBContext direct.

@Stateless
public class HelloBean implements com.foo.ejb.HelloRemote {
    public void hello() {
        try {
            InitialContext ic = new InitialContext();
            SessionContext sctxLookup =
              (SessionContext) ic.lookup("java:comp/EJBContext");
            System.out.println("look up EJBContext by standard name: " + sctxLookup);
        } catch (NamingException ex) {
            throw new IllegalStateException(ex);
        }
    }
}

This snippet was obtained from 4 ways to obtain EJBContext.

Problem

I am in a Jboss AS 7 environment. My application's /admIn/* path is protected by a security-constraint which requires form based authentication. Security domain is database backed. It's ok but now I want to display a "good morning " in each page's header. I'm looking for some sort of getLoggedUsername() or getPrincipal() function but I can't find it. Please post a reference to the official docs if any. Thank you.

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