USING PUMA SERVICE


//You can call in your do view method,you can simply use the below code
import com.ibm.portal.portlet.service.PortletServiceHome;
import com.ibm.portal.portlet.service.PortletServiceUnavailableException;
import com.ibm.portal.um.PumaProfile;
import com.ibm.portal.um.portletservice.PumaHome;

private void getUserId(RenderRequest request)
            throws PortletServiceUnavailableException {
PortletServiceHome psh = null;
        try {
            javax.naming.Context ctx = new javax.naming.InitialContext();
            psh = (PortletServiceHome) ctx
                    .lookup("portletservice/com.ibm.portal.um.portletservice.PumaHome");
        } catch (NamingException e) {

        }
        PumaHome service = (PumaHome) psh.getPortletService(PumaHome.class);
        PumaProfile pp = service.getProfile(request); // get the use PumaProfile
                                                        // object
        try {

            System.out.println(pp.getCurrentUser());//gives the complete information
                } catch (com.ibm.portal.um.exceptions.PumaException e1) {
            e1.printStackTrace();
        }

}