JSTL c태그 c:choose

<c:choose>
	<c:when test="${sessionScope.roleObsvAuth == null}">
    	<c:set value="3" var="userRole" />
    </c:when>
	<c:when test="${sessionScope.user != null}">
		<c:choose>
			<c:when test="${sessionScope.roleObsvAuth eq  '0'}">
				<c:set value="0" var="userRole" />
			</c:when>
            <c:when test="${sessionScope.roleObsvAuth eq  '1'}">
                <c:set value="1" var="userRole" />
            </c:when>
			<c:when test="${sessionScope.roleObsvAuth eq  '2'}">
				<c:set value="2" var="userRole" />
			</c:when>
			<c:when test="${sessionScope.roleObsvAuth eq  '3'}">
				<c:set value="3" var="userRole" />
			</c:when>
			<c:otherwise>
				<c:set value="3" var="userRole" />
			</c:otherwise>
		</c:choose>
	</c:when>
	<c:otherwise>
		<c:set value="3" var="userRole" />
	</c:otherwise>
</c:choose>

jsp에서 c:if 문 안에 c:if문의 사용을 할수없다. 만약 그렇게 작동해야할경우, c::choose 문을 사용하는것을 권장