http://www.jexp.ru/index.php?action=history&feed=atom&title=Java%2FJSTL%2FIf
Java/JSTL/If - История изменений
2026-04-25T01:55:00Z
История изменений этой страницы в вики
MediaWiki 1.30.0
http://www.jexp.ru/index.php?title=Java/JSTL/If&diff=6705&oldid=prev
Admin: 1 версия
2010-06-01T06:17:23Z
<p>1 версия</p>
<table class="diff diff-contentalign-left" data-mw="interface">
<tr style="vertical-align: top;" lang="ru">
<td colspan="1" style="background-color: white; color:black; text-align: center;">← Предыдущая</td>
<td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 06:17, 1 июня 2010</td>
</tr><tr><td colspan="2" style="text-align: center;" lang="ru"><div class="mw-diff-empty">(нет различий)</div>
</td></tr></table>
Admin
http://www.jexp.ru/index.php?title=Java/JSTL/If&diff=6704&oldid=prev
в 18:01, 31 мая 2010
2010-05-31T18:01:44Z
<p></p>
<p><b>Новая страница</b></p><div>== If with Body ==<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="java"><br />
<br />
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %><br />
<html><br />
<head><br />
<title>If with Body</title><br />
</head><br />
<body><br />
<c:if test="${pageContext.request.method=="POST"}"><br />
<c:if test="${param.guess=="5"}">You guessed my number!<br />
<br /><br />
<br /><br />
<br /><br />
</c:if><br />
<c:if test="${param.guess!="5"}">You did not guess my number!<br />
<br /><br />
<br /><br />
<br /><br />
</c:if><br />
</c:if><br />
<form method="post">Guess what number I am thinking of?<br />
<input type="text" name="guess" /><br />
<input type="submit" value="Try!" /><br />
<br /><br />
</form><br />
</body><br />
</html><br />
<br />
<br />
</source><br />
<br />
<br />
<!-- end source code --><br />
<br />
<br />
<br />
<br />
<br />
<br />
== JSTL core tag: if ==<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="java"><br />
<br />
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %><br />
<html><br />
<head><title>Using the Core JSTL tags</title></head><br />
<body><br />
<h2>Here are the available Time Zone IDs on your system</h2><br />
<jsp:useBean id="zone" class="com.jexp.ZoneWrapper" /> <br />
<jsp:useBean id="date" class="java.util.Date" /> <br />
<c:if test="${date.time != 0}" ><br />
<c:out value="Phew, time has not stopped yet...<br /><br />" escapeXml="false" /><br />
</c:if><br />
<c:set var="zones" value="${zone.availableIDs}" scope="session" /><br />
<c:forEach var="id" items="${zones}"><br />
<c:out value="${id}<br />" escapeXml="false" /><br />
<br />
</c:forEach><br />
</body><br />
</html><br />
// Save the ZoneWrapper.class into WEB-INF/classes/com/jexp<br />
//ZoneWrapper.java<br />
package com.jexp; <br />
<br />
import java.util.TimeZone;<br />
public class ZoneWrapper {<br />
public ZoneWrapper() {<br />
}<br />
public String[] getAvailableIDs() {<br />
return TimeZone.getAvailableIDs();<br />
}<br />
}<br />
<br />
<br />
</source><br />
<br />
<br />
<!-- end source code --><br />
<br />
<br />
<br />
<br />
<br />
== JSTL: If Else ==<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="java"><br />
<br />
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %><br />
<html><br />
<head><br />
<title>Using Choose,Otherwise and When</title><br />
</head><br />
<body><br />
<c:if test="${pageContext.request.method=="POST"}">Ok, we"ll<br />
send <br />
<c:out value="${param.enter}" /><br />
<c:choose><br />
<c:when test="${param.enter=="1"}">pizza.<br />
<br /><br />
</c:when><br />
<c:otherwise>pizzas.<br />
<br /><br />
</c:otherwise><br />
</c:choose><br />
</c:if><br />
<form method="post">Enter a number between 1 and 5:<br />
<input type="text" name="enter" /><br />
<input type="submit" value="Accept" /><br />
<br /><br />
</form><br />
</body><br />
</html><br />
<br />
<br />
</source><br />
<br />
<br />
<!-- end source code --><br />
<br />
<br />
<br />
<br />
<br />
<br />
== JSTL If No Body ==<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="java"><br />
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %><br />
<html><br />
<head><br />
<title>If with NO Body</title><br />
</head><br />
<body><br />
<c:if test="${pageContext.request.method=="POST"}"><br />
<c:if test="${param.guess=="5"}" var="result" /><br />
I tested to see if you picked my number, the result was <br />
<c:out value="${result}" /><br />
</c:if><br />
<form method="post">Guess what number I am thinking of?<br />
<input type="text" name="guess" /><br />
<input type="submit" value="Try!" /><br />
<br /><br />
</form><br />
</body><br />
</html><br />
<br />
<br />
</source><br />
<br />
<br />
<!-- end source code --><br />
<br />
<br />
<br />
<br />
<br />
<br />
== JSTL: if tag ==<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="java"><br />
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %><br />
<HTML><br />
<HEAD><TITLE>JSTL "if" tag</TITLE></HEAD><br />
<BODY><br />
<c:if test="true">Hello world!</c:if><br />
</BODY><br />
</HTML><br />
<br />
<br />
</source><br />
<br />
<br />
<!-- end source code --><br />
<br />
<br />
<br />
<br />
<br />
== JSTL RT If ==<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="java"><br />
<br />
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %><br />
<%@ taglib uri="http://java.sun.ru/jstl/core-rt" prefix="c-rt" %><br />
<html><br />
<head><br />
<title>If Caseless</title><br />
</head><br />
<body><br />
<c:set var="str" value="jStL" /><br />
<jsp:useBean id="str" type="java.lang.String" /><br />
<c-rt:if test="<%=str.equalsIgnoreCase("JSTL")%>"> They are<br />
equal</c-rt:if><br />
</body><br />
</html><br />
<br />
<br />
</source><br />
<br />
<br />
<!-- end source code --></div>