<%@ page language="java" contentType="text/html;charset=Windows-31J"%>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions"%>
<html><body>
<%
String[] str = {"aa","bb","cc"};
pageContext.setAttribute("data",str);
%>
${ fn:join( data , '=' ) } ・・・ 「aa=bb=cc」を返す
</body></html>
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