JSTL fn: join () function
fn: join () function to all the elements of an array using a specified delimiter into a string.
grammar
fn: () syntax join function is as follows:
${fn:join([数组], <分隔符>)}
Examples Demo
The following examples demonstrate the capabilities of this function:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<html>
<head>
<title>使用 JSTL 函数</title>
</head>
<body>
<c:set var="string1" value="www w3big com"/>
<c:set var="string2" value="${fn:split(string1, ' ')}" />
<c:set var="string3" value="${fn:join(string2, '-')}" />
<p>字符串为 : ${string3}</p>
</body>
</html>
Note: fn: split function returns a string with the specified delimiter split into a sub-string array.
Results are as follows:
字符串为 : www-w3big-com