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| 变量范围：网页，会议及应用 |
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//File: index.jsp
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<c:set var="scopeVarPage" value="Page Value" scope="page" />
<c:set var="scopeVarRequest" value="Request Value"
scope="request" />
<c:set var="scopeVarSession" value="Session Value"
scope="session" />
<c:set var="scopeVarApplication" value="Application Value"
scope="application" />
<html>
<head>
<title>Scope Example</title>
</head>
<body>
<h3>Main File: index.jsp</h3>
<table border="1">
<tr>
<th>Scoped Variable</th>
<th>Current Value</th>
</tr>
<tr>
<td>
<b>Page Scope</b>
(scopeVarPage)</td>
<td> 
<c:out value="${scopeVarPage}" />
</td>
</tr>
<tr>
<td>
<b>Request Scope</b>
(scopeVarRequest)</td>
<td> 
<c:out value="${scopeVarRequest}" />
</td>
</tr>
<tr>
<td>
<b>Session Scope</b>
(scopeVarSession)</td>
<td> 
<c:out value="${scopeVarSession}" />
</td>
</tr>
<tr>
<td>
<b>Application Scope</b>
(applicationVarPage)</td>
<td> 
<c:out value="${scopeVarApplication}" />
</td>
</tr>
</table>
<br />
<br />
<jsp:include page="included.jsp" />
<br />
<br />
<a href="linked.jsp">[Click Here to View: linked.jsp]</a>
</body>
</html>
//////////////////////////////////////////////////////////////////////////////////////////
//File: linked.jsp
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<html>
<head>
<title>Scope Example</title>
</head>
<body>
<h3>Linked File: linked.jsp</h3>
<table border="1">
<tr>
<th>Scoped Variable</th>
<th>Current Value</th>
</tr>
<tr>
<td>
<b>Page Scope</b>
(scopeVarPage)</td>
<td> 
<c:out value="${scopeVarPage}" />
</td>
</tr>
<tr>
<td>
<b>Request Scope</b>
(scopeVarRequest)</td>
<td> 
<c:out value="${scopeVarRequest}" />
</td>
</tr>
<tr>
<td>
<b>Session Scope</b>
(scopeVarSession)</td>
<td> 
<c:out value="${scopeVarSession}" />
</td>
</tr>
<tr>
<td>
<b>Application Scope</b>
(applicationVarPage)</td>
<td> 
<c:out value="${scopeVarApplication}" />
</td>
</tr>
</table>
</body>
</html>
//////////////////////////////////////////////////////////////////////////////////////////
//File: included.jsp
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<table border="1">
<tr>
<th>Scoped Variable</th>
<th>Current Value</th>
</tr>
<tr>
<td>
<b>Page Scope</b>
(scopeVarPage)</td>
<td> 
<c:out value="${scopeVarPage}" />
</td>
</tr>
<tr>
<td>
<b>Request Scope</b>
(scopeVarRequest)</td>
<td> 
<c:out value="${scopeVarRequest}" />
</td>
</tr>
<tr>
<td>
<b>Session Scope</b>
(scopeVarSession)</td>
<td> 
<c:out value="${scopeVarSession}" />
</td>
</tr>
<tr>
<td>
<b>Application Scope</b>
(applicationVarPage)</td>
<td> 
<c:out value="${scopeVarApplication}" />
</td>
</tr>
</table>
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 JSTL-DataScope-Page-Session-Application.zip( 855 k) |
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