해당 게시물은 Udemy의 "JSP, Servlets and JDBC for Beginners" 강의를 정리한 내용입니다.
1. <c:if> 태그
- 식을 평가하고 식이 참으로 평가되는 경우에만 본문 내용을 표시
<%@ taglib uri="http://java.sun.com/jsp/jstl/xml" prefix="x" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page import="java.util.*,com.luv2code.jsp.tagdemo.Student" %>
<%
List<Student> data = new ArrayList<>();
data.add(new Student("Jian","Han", false));
data.add(new Student("Sangeun","Shin", false));
data.add(new Student("Wonny","Kim", true));
pageContext.setAttribute("myStudents", data);
%>
<html>
<body>
<table border="1">
<tr>
<th> First Name</th>
<th> Last Name</th>
<th> Gold Customer</th>
</tr>
<c:forEach var = "tempStudent" items= "${myStudents}">
<tr>
<td>${tempStudent.firstName} </td>
<td>${tempStudent.lastName}</td>
<td>
<c:if test ="${tempStudent.goldCustomer}">
Special Discount
</c:if>
</td>
</tr>
</c:forEach>
</table>
</body>
</html>cf) tag 라이브러리는 else는 없음!
대신 태그 라이브러리 안에 not 조건을 넣을 수 있음
<%@ taglib uri="http://java.sun.com/jsp/jstl/xml" prefix="x" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page import="java.util.*,com.luv2code.jsp.tagdemo.Student" %>
<%
List<Student> data = new ArrayList<>();
data.add(new Student("Jian","Han", false));
data.add(new Student("Sangeun","Shin", false));
data.add(new Student("Wonny","Kim", true));
pageContext.setAttribute("myStudents", data);
%>
<html>
<body>
<table border="1">
<tr>
<th> First Name</th>
<th> Last Name</th>
<th> Gold Customer</th>
</tr>
<c:forEach var = "tempStudent" items= "${myStudents}">
<tr>
<td>${tempStudent.firstName} </td>
<td>${tempStudent.lastName}</td>
<td>
<c:if test ="${not tempStudent.goldCustomer}">
-
</c:if>
</td>
</tr>
</c:forEach>
</table>
</body>
</html>
Slow and Steady