jstl fn

<%@ taglib uri="/WEB-INF/taglib/c.tld" prefix="c"%> <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %> ${fn:substring(wjcd.lrsj, 0, 16)} 使用functions函数来获取list的长度 ${fn:length(list)

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