String fn:toLowerCase(String sourceStr)其中，sourceStr 为指定的字符串。
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<!DOCTYPE html>
<html>
<head>
<title>编程帮(www.lmcjl.com)</title>
</head>
<body>
<c:set var="msg" value="WELCOME TO BIANCHENGBANG" />
${fn:toLowerCase(msg)}
</body>
</html>
welcome to bianchengbang
本文链接：http://task.lmcjl.com/news/17065.html