[jboss-user] [Security & JAAS/JBoss] - getCallerPrincipal throws NullPointerException

[sunnygrass]

I'am new in JAAS, so I wrote a simple EJB 3 bean to see how it works.

@Stateless
  | @Remote({IGetUserName.class})
  | public class GetUserName implements IGetUserName
  | {
  | 	SessionContext	sc;
  | 
  | 	@Resource
  | 	public	void	setSc(SessionContext sc)
  | 	{
  | 		this.sc = sc;
  | 	}
  | 
  | 	@Override
  | 	public String getUserName()
  | 	{
  | 		if ( sc==null ) return "Context is null";
  | 		
  | 		Principal	p = sc.getCallerPrincipal();
  | 		if ( p==null ) return "principal is null";
  | 		
  | 		return	p.getName();
  | 	}
  | }
  | 

But when I call previous bean NullPointerException was throwed.
The environment is : JBoss 5.0.0.GA, jboss was started with the configuration "default". No other changes to the jboss conf files.

Does any one have an idea? I have looked around for a long time, but still don't know how to resolve it.




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