출처: https://bumcrush.tistory.com/182 [맑음때때로 여름]

tomcat.apache.org/taglibs/standard/

 

서블렛과 JSP 버전에 맞는 JSTL 설치

내가쓰는 tomcat8.5는 1.2를 설치

 

 

if, forEach, Url을 많이 사용한다
ontains(x) >> contains

 

 

<c:out>태그

 

 

makeList.jsp

<%@page import="form.Member"%>
<%@page import="java.util.ArrayList"%>
<%@page import="java.util.List"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
 
<%
 
 
 List<Member> members = new ArrayList<Member>();
	members.add(new Member("cool1","1111","cool11","photo11.jpg"));
	members.add(new Member("cool2","2222","cool12","photo12.jpg"));
	members.add(new Member("cool3","3333","cool13",null));
	members.add(new Member("cool4","4444","cool14","photo14.jpg"));
	members.add(new Member("cool5","5555","cool15","photo15.jpg"));
	members.add(new Member("cool6","6666","cool16","photo16.jpg"));
	members.add(new Member("cool7","7777","cool17","photo17.jpg"));
	members.add(new Member("cool8","8888","cool18",null));
	members.add(new Member("cool9","9999","cool19",null));
	members.add(new Member("cool10","0000","cool10","photo10.jpg"));
	
	session.setAttribute("members", members);
	
 
 
%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
 
<!-- 코어태그사용을 위한 태그라이브러리 -->
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
 
<!-- 모듈화가능 -->
<%@ include file="makeList.jsp"%>
 
<%
	
%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
 
	<h1>회원리스트</h1>
 
	<table border="1">
		<tr>
			<th>ID</th>
			<th>PASS</th>
			<th>NAME</th>
			<th>PHOTO</th>
		</tr>
        
		<c:forEach items="${members}" var="member">
			<tr>
				<td>${member.userId}</td>
				<td>${member.pass}</td>
				<td>${member.userName}</td>
				
				<td>
					<c:out value="${member.userPhoto}" escapeXml="false">
						<span style="color:red">프로필 사진 없음</span>
					</c:out>				
				</td>
				
			</tr>
 
		</c:forEach>
	</table>
 
 
</body>
</html>

 

<c:if>태그

 

!!!!!!!!!!!!!!!!! 참고

eq : =

ne : !=

 

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
 
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
 
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
 
	<c:set var="msg" value="user1" />
	msg : ${msg}
	<!-- 기본으로 page 속성에 들어가있음 -->
	<br>
 
	<%-- <c:if test="논리값이 true일때 출력"></c:if> --%>
	<c:if test="${true}">
		1) test 속성값이 true일때 출력
	</c:if>
	<br>
 
	<c:if test="${msg=='user1'}">
		2) test 속성값이 true일때 출력
	</c:if>
	<br>
 
	<c:if test="${msg=='user1'}" var="result" scope="page">
		3) test 속성값이 true일때 출력 : ${result}
	</c:if>
	<br>
 
	<c:if test="${msg eq 'user1'}" var="result1" scope="page">
		4) test 속성값이 true일때 출력 : ${result1}
	</c:if>
	<br>
	
	<c:if test="${msg ne 'user1'}" var="result2" scope="page">
		5) test 속성값이 true일때 출력 : ${result2}
	</c:if>	${result2}
	
	<br>
	
</body>
</html>

 

<c:choose>,<c:when>,<c:otherwise> 태그

 

 

이들 태그는 함께 사용되며 자바의 if ~ else if 문, switch 문과 유사하다.
<c:choose> 태그 내에는 <c:when> 태그가 여러 개 올 수 있다.

 

	<c:set var="number" value="12"/>
	
	<c:choose>
		<c:when test="${number>0}">
			양수입니다.
		</c:when>
		<c:when test="${number<0}">
			음수입니다.
		</c:when>
		<c:otherwise>
			0입니다.
		</c:otherwise>	
	</c:choose>
	
	<br>

 

<c:forEach> 태그

 

반복문과 관련된 태그로 자바의 for 문과 유사하다. 

가장 중요하고 널리 쓰이는 JSTL 태그 중 하나임.
여러 옵션 활용법을 잘 익혀 두어야 한다.

 

 

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
 
<!-- 코어태그사용을 위한 태그라이브러리 -->
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
 
<!-- 모듈화가능 -->
<%@ include file="makeList.jsp"%>
 
<%
	
%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
 
	<h1>회원리스트</h1>
 
	<table border="1">
		<tr>
			<th>INDEX</th>
			<th>COUNT</th>
			<th>ID</th>
			<th>PASS</th>
			<th>NAME</th>
			<th>PHOTO</th>
		</tr>
		<!-- index, count -->
		<c:forEach items="${members}" var="member" varStatus="status">
			<tr>
				<td>${status.index}</td>
				<td>${status.count}</td>
				<td>${member.userId}</td>
				<td>${member.pass}</td>
				<td>${member.userName}</td>
				
				<td>
					<c:out value="${member.userPhoto}" escapeXml="false">
						<span style="color:red">프로필 사진 없음</span>
					</c:out>				
				</td>
				
			</tr>
			<!-- index, count -->
 
		</c:forEach>
	</table>
	
	<c:forEach var="num" begin="1" end="10" step="2">
		${num} <br>
	
	</c:forEach>
 
</body>
</html>

 

 

 

 

<c:forTokens> 태그

 

 

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
 
<c:forTokens var="phoneNum" items="010-9999-7777" delims="-">
	${phoneNum}
</c:forTokens>
 
 
<c:forTokens var="phoneNum" items="010-9999-7777" delims="-" varStatus="stat">
	<input type="text" name="phoneNum${stat.count}" value="${phoneNum}">
	<c:if test="${stat.count<3}">-</c:if>
</c:forTokens>
 
 
</body>
</html>

 

URL 관련 태그

 

잘안씀

<c:url> 태그

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
 
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
 
 
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
 
	<!-- context경로/index.jsp -->
	<c:url value="/index.jsp"/><br>
	
	<c:url value="/index.jsp"/><br>
	<c:url value="/index.jsp"/><br>
	<c:url value="/index.jsp" var="indexLink"/><br>
	
	${indexLink}
	
	<br>
	<c:url value="/index.jsp">
		<c:param name="pageNumber" value="1"/>
		<c:param name="keyword" value="jstl"/>
	</c:url>
	
	
</body>
</html>

 

그외 : <c:remove>태그

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