fn:split()分割字符
<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
${ header['accept'] }
<!-- 使用split将该字符以“，”为界分开，然后用forEach标签循环输出 -->
<c:set value="${ fn:split(header['accept'], ',') }" var="names" />
<br/>
header['accept']: <br/><br/>
<c:forEach items="${ names }" var="name">
${ name } <br/>
</c:forEach>
</body>
</html>
