If you want to output the user first name and last name in portlet jsp here how you can do it:
<c:set var="gName" value="${wp.user['givenName']}"/>
<c:if test="${gName ne null}">
<c:set var="givenName" value="${gName[0]}"/>
</c:if>
<span class="login"><c:out value="${givenName}" /> <c:out value="${wp.user['sn']}" /></span>
Portal provides the wp bean for access in theme and portlets.
