📄 logic-present.jsp
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@ page language="java" %>
<%@ taglib uri="/WEB-INF/struts-html-el.tld" prefix="html-el" %>
<%@ taglib uri="/WEB-INF/struts-bean-el.tld" prefix="bean-el" %>
<%@ taglib uri="/WEB-INF/struts-logic-el.tld" prefix="logic-el" %>
<%@ taglib uri="/WEB-INF/c.tld" prefix="c" %>
<html-el:html>
<head>
<title>Test Struts presence tags and Replacements</title>
</head>
<body bgcolor="white">
<div align="center">
<h1>Test Struts presence tags and Replacements</h1>
</div>
<jsp:useBean id="bean" scope="page" class="org.apache.struts.webapp.exercise.TestBean"/>
<table border="1">
<tr>
<th>Test Type</th>
<th>Correct Value</th>
<th>Test Result</th>
</tr>
<tr>
<td>Role</td>
<td>notPresent</td>
<td>
<logic-el:present role="fubar">
present
</logic-el:present>
<logic-el:notPresent role="fubar">
notPresent
</logic-el:notPresent>
</td>
</tr>
<tr>
<td>Bean</td>
<td>present</td>
<td>
<c:choose>
<c:when test="${not empty bean}">
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
</tr>
<tr>
<td>Bean</td>
<td>notPresent</td>
<td>
<c:choose>
<c:when test="${not empty FOOBAR}">
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
</tr>
<tr>
<td>Cookie</td>
<td>
<c:choose>
<c:when test="${pageContext.request.requestedSessionIdFromCookie}">
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
<td>
<c:choose>
<c:when test='${not empty cookie["JSESSIONID"]}'>
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
</tr>
<tr>
<td>Cookie</td>
<td>notPresent</td>
<td>
<c:choose>
<c:when test='${not empty cookie["FOOBAR"]}'>
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
</tr>
<tr>
<td>Header</td>
<td>present</td>
<td>
<c:choose>
<c:when test='${not empty header["User-Agent"]}'>
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
</tr>
<tr>
<td>Header</td>
<td>notPresent</td>
<td>
<c:choose>
<c:when test='${not empty header["FOOBAR"]}'>
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
</tr>
<tr>
<td>Parameter</td>
<td>present</td>
<td>
<c:choose>
<c:when test='${not empty param["param1"]}'>
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
</tr>
<tr>
<td>Parameter</td>
<td>notPresent</td>
<td>
<c:choose>
<c:when test='${not empty param["FOOBAR"]}'>
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
</tr>
<tr>
<td>Property</td>
<td>present</td>
<td>
<c:choose>
<c:when test="${not empty bean.stringProperty}">
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
</tr>
<tr>
<td>Property</td>
<td>notPresent</td>
<td>
<c:choose>
<c:when test="${not empty bean.nullProperty}">
present
</c:when>
<c:otherwise>
notPresent
</c:otherwise>
</c:choose>
</td>
</tr>
</table>
</body>
</html-el:html>
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