jsp获取list的长度

<%@ taglib uri="<a target=_blank target="_blank" rel="nofollow" href="http://java.sun.com/jsp/jstl/core" style="color: rgb(51, 102, 153); text-decoration: none;">http://java.sun.com/jsp/jstl/core</a>" prefix="c"%> 
<%@ taglib prefix="fn" uri="<a target=_blank target="_blank" rel="nofollow" href="http://java.sun.com/jsp/jstl/functions" style="color: rgb(51, 102, 153); text-decoration: none;">http://java.sun.com/jsp/jstl/functions</a>"%> 

<c:if test="${fn:length(list) == 1 }">

</c:if>