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Java Tutorial/JSTL/Page Context - История изменений
2026-04-24T02:53:42Z
История изменений этой страницы в вики
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http://www.jexp.ru/index.php?title=Java_Tutorial/JSTL/Page_Context&diff=3405&oldid=prev
в 17:44, 31 мая 2010
2010-05-31T17:44:26Z
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<td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 17:44, 31 мая 2010</td>
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http://www.jexp.ru/index.php?title=Java_Tutorial/JSTL/Page_Context&diff=3406&oldid=prev
Admin: 1 версия
2010-05-31T15:23:30Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== Check Page Context Request Method ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %><br />
<html><br />
<head><br />
<title>Property Access</title><br />
</head><br />
<body><br />
<c:if test="${pageContext.request.method=="POST"}"><br />
<c:set var="idx" value="name" /><br />
param.name = <br />
<c:out value="${param.name}" /><br />
<br /><br />
param[name] = <br />
<c:out value="${param[idx]}" /><br />
<br /><br />
</c:if><br />
<br /><br />
<form method="post">Please enter your name? <br />
<input type="text" name="name" /><br />
<input type="Submit" /><br />
<br /><br />
</form><br />
</body><br />
</html></source><br />
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<!-- end source code --><br />
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== Query String ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
<%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %><br />
<html><br />
<head><br />
<title>Query String Example</title><br />
</head><br />
<body>Your favorite color is: <br />
<b><br />
<c:out value="${param.color}" /><br />
</b><br />
<br /><br />
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Choose your favorite color:<br />
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== Set Class to Page Context ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
<%@ taglib prefix="c" uri="http://java.sun.ru/jstl/core" %><br />
<%<br />
synchronized (pageContext) {<br />
Class thisClass = getClass();<br />
// session.setAttribute("thisClass", thisClass);<br />
pageContext.setAttribute("thisClass", thisClass, PageContext.PAGE_SCOPE);<br />
System.out.println("Stored reference");<br />
Class theClass = (Class) pageContext.getAttribute("thisClass", PageContext.PAGE_SCOPE);<br />
System.out.println("The retrieved reference is " + theClass);<br />
}<br />
%><br />
<html><br />
<body><br />
The class that instantiated this JSP is <c:out value="${pageScope.thisClass.name}" />.<br />
</body><br />
</html></source><br />
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<!-- end source code --><br />
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== Set Variable to Page Context ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
<%@ taglib prefix="c" uri="http://java.sun.ru/jstl/core" %><br />
<%<br />
synchronized (pageContext) {<br />
String[] names = {"A", "B", "C", "D"};<br />
pageContext.setAttribute("names", names, PageContext.PAGE_SCOPE);<br />
}<br />
%><br />
<html><br />
<head><br />
<title>forEach and status</title><br />
</head><br />
<body><br />
<c:forEach var="currentName" items="${pageScope.names}" varStatus="status"><br />
Family member #<c:out value="${status.count}" /> is<br />
<c:out value="${currentName}" /> <br /><br />
</c:forEach><br />
</body><br />
</html></source><br />
<br />
<br />
<!-- end source code --></div>
Admin