jsp文件头
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%@ taglib prefix="security" uri="http://www.springframework.org/security/tags" %>
<c:set var="ctx" value="${pageContext.request.contextPath}"/>