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

http://blog.csdn.net/learntech/article/details/34849019

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将jstl 的uri

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

换为：

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