test3.jsp
<%@ page contentType="text/html; charset=UTF-8"%>
<%@ page trimDirectiveWhitespaces="true" %>
<%
String cp = request.getContextPath();
%>
<!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>
<form action="test3_ok.jsp" method="post">
수 : <input type="text" name="num">
<input type="submit" value="결과">
</form>
</body>
</html>
========================================================================================
test3_ok.jsp
<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page trimDirectiveWhitespaces="true" %>
<%
String cp = request.getContextPath();
request.setCharacterEncoding("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>
<c:choose>
<c:when test="${param.num%3==0 && param.num%2==0 }">
${param.num}은 2와 3의 배수입니다.
</c:when>
<c:when test="${ param.num%2==0 }">
${param.num}은 2와 3의 배수입니다.
</c:when>
<c:when test="${param.num%3==0 }">
${param.num}은 2와 3의 배수입니다.
</c:when>
<c:otherwise>
${param.num }은 2 또는 3의 배수가 아닙니다.
</c:otherwise>
</c:choose>
</body>
</html>
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