Hello Stian, my reponse in blue below.

Did you actually add @SecurityDomain("keycloak")?

YES.

Does the request require authentication (does it have a security-constraint in web.xml)? 

YES; The request say http://ip:port/context/index.html will be routed to Keycloak for the rquester to login. On successful log-in the requester is redirected back to the index.html. It is at this point I want to retrieve or know who the User is.

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From: Stian Thorgersen
Sent: Friday, February 5, 2016 9:53 AM
To: PAA KOJO KONDUAH AMOS
Cc: keycloak-user@lists.jboss.org
Subject: Re: [keycloak-user] Retrieving Logged In User Information.

Did you actually add @SecurityDomain("keycloak")?

Does the request require authentication (does it have a security-constraint in web.xml)? 

On 5 February 2016 at 10:41, PAA KOJO KONDUAH AMOS <pkkamos@gmail.com> wrote:

Hello, I am trying to retrieve information about the User logged into the webapp via keycloak. I have seen around information on using the following;

@SecurityDomain("keycloak")

@Context
SecurityContext sc;

And

KeycloakPrincipal principal = (KeycloakPrincipal) sc.getUserPrincipal();
 
 
 

But the above line is returning a NullPointerException.

I must say, I have already done the required configuration; as in enabling the Keycloak Subsystem within my app server's server configuration: standalone.xml.

Please any lead on how to retrieve the logged in User via KeyCloak?

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