el_test1.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
session.setAttribute("test", "Session Test");
%>
<form action="el_test2.jsp" method="post">
이름 : <input type="text" name="name" value="홍길동">
<input type="submit" value="입력">
</form>
</body>
</html>
el_test2.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
%>
<h3><%=session.getAttribute("test") %></h3>
<h3><%=request.getParameter("name") %></h3>
<h3>${sessionScope.test }</h3>
<h3>${param.name }</h3>
<br>
\${5+7} = ${5+7}
</body>
</html>
jstl_core_ex1.jsp
<%@page import="java.util.List"%>
<%@page import="java.util.ArrayList"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
// * 영역객체 4가지
// page | request | session | application
// String test = "Hello String";
// pageContext.setAttribute("test", "Hello String");
// session.setAttribute("id", "admin");
// session.removeAttribute("id");
%>
<c:set var="test" value="Hello JSTL!" scope="page" />
<c:set scope="session" var="test" value="admin" />
<%
// Map으로 구현된 영역객체를 다음과 같은 순서로 검색함.
// *scope 속성에 올 수 있는 값
// page -> request -> session -> application
%>
<c:out value="${test}" /><br>
<c:out value="${sessionScope.test}" /><br>
--------<br><br>
<c:remove var="test" scope="session"/><br><%-- 4개의 영역객체 모두 해당이름 삭제 --%>
<c:out value="${test}" /><br>
<c:if test="${ 5 < 10 }">
<h3>5는 10보다 작다</h3>
</c:if>
<c:choose>
<c:when test="${5+10 == 50}">
<h3>5+10은 50이다.</h3>
</c:when>
<c:otherwise>
<h3>5+10은 50이 아니다.</h3>
</c:otherwise>
</c:choose>
<c:forEach begin="1" end="10" step="2" var="i">
${pageScope.i}
</c:forEach>
<br>
<c:forTokens items="a,b,c,d,e,f,g" delims="," var="alphabet">
<b>${alphabet}</b>
</c:forTokens>
<%
List<String> list = new ArrayList<>();
list.add(0, "aaa");
list.add(1, "bbb");
list.add(2, "ccc");
pageContext.setAttribute("strList", list);
request.setAttribute("strList", list);
%>
<%-- <c:out value="${strList}" /> --%>
<c:forEach items="${requestScope.strList}" var="str">
${str}
</c:forEach>
</body>
</html>
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