https://as5202t-5748.myasustor.com/ 2026-07-05T12:25:41+00:00 https://as5202t-5748.myasustor.com/ https://as5202t-5748.myasustor.com/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2010-07-02T08:27:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://as5202t-5748.myasustor.com/doku.php?id=study:jsp:jstl&rev=1278059226&do=diff Get size of Collection fn:lengthは「配列、コレクション、文字列」のサイズを返却する。 <%@ page import="java.util.*" %> <%@ page isELIgnored="false" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <% String s = "aaaaa"; pageContext.setAttribute("str",s); String[] ar = {"aa","bb"}; pageContext.setAttribute("array",ar); java.ut…