jstl 사용법

jstl 사용법

https://www.tutorialspoint.com/jsp/jsp_standard_tag_library.htm

JSP - Standard Tag Library (JSTL) Tutorial

jstl 라이브러리를 복사하여 원하는 jsp 상단에 붙여넣기

<%@ taglib prefix = "c" uri = "http://java.sun.com/jsp/jstl/core" %>

pom.xml 의존성 설정

<!-- JSTL -->
<dependency>
	<groupId>javax.servlet</groupId>
	<artifactId>jstl</artifactId>
</dependency>

---

jstl문법

<c:choose>
	<c:when test="${empty sessionScope.principal}">
		<ul class="navbar-nav">
			<li class="nav-item"><a class="nav-link" href="/loginForm">로그인</a></li>
			<li class="nav-item"><a class="nav-link" href="/joinForm">회원가입</a></li>
		</ul>
	</c:when>			
	<c:otherwise>
		<ul class="navbar-nav">
			<li class="nav-item"><a class="nav-link" href="/board/form">글쓰기</a></li>
			<li class="nav-item"><a class="nav-link" href="/user/form">회원정보</a></li>
			<li class="nav-item"><a class="nav-link" href="/logout">로그아웃</a></li>
		</ul>
	</c:otherwise>
</c:choose>