According to TLD or attribute directive in tag file, attribute value does not accept any expressions

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi= http://www.w3.org/2001/XMLSchema-instance
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" >

</web-app>

jsp代码：

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

代码

<%@taglib prefix="c" uri="http://java.sun.com/jstl/core" %>

写成

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>