将jstl.jar和standard.jar拷贝到/WEB-INF/lib下，*.tld拷贝到/WEB-INF下
代码中加入：
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt" %>
当出现以下错误
According to TLD or attribute directive in tag file, attribute value does not accept any expressions
代码中加入：
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %><%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt" %>
当出现以下错误
According to TLD or attribute directive in tag file, attribute value does not accept any expressions可以
把<web-app *****></web-app>中的*全部去掉
把<%@ taglib uri的http://java.sun.com/jsp/jstl/core" prefix="c"%>改为<%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c" %>
