According to TLD or attribute directive in tag file, attribute value does not accept any expressions
执行某jsp页面时，弹出如标题所示异常，jsp代码以下：html
<%@ page language="java" contentType="text/html;charset=gbk" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>java
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
</head>
<body>
This is the result:
<c:out value="${userInfo}" default="没有结果"/>
</body>
</html>express
异常的缘由是不能识别“${userInfo}”,解决办法有两种：
1、在page指令里，加入isELIgnored="true"属性，即
<%@ page language="java" contentType="text/html;charset=gbk" isELIgnored="true" %>
2、把<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>变为：
<%@ taglib prefix="c" uri=http://java.sun.com/jstl/core_rt %>
通过改动以后，jsp页面能正常执行了。jsp
正解：若是页面不能识别ＥＬ表达式，页页上会直接原样输出你写的ＥＬ表达式，这时使用方法１便可，第二种状况就跟tld有关了，必须与你的jstl.jar包定义的tld相一致，这时若是遇到“According to TLD or attribute directive in tag file, attribute value does not accept any expressions”这种异常，你能够打开本身的jstl.jar看一下它的meta-inf下相关的tld文件是如何定义相关标签的，通常都是引用prefix时出错，版本缘由。post
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