Add the following line to the top of the file:
<%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags" %>
Then, surround the desired component with <sec:authorize> tag:
<sec:authorize access="hasRole('ROLE_SUPERVISOR')">
<!-- Here goes what you want to controll the visibility of.
In this case, only the users with role 'ROLE_SUPERVISOR'
can see this component.-->
</sec:authorize>
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