关于JSP中JavaBean的Scope属性

王朝学院·作者佚名  2009-10-28
窄屏简体版  字體: |||超大  

测试application和request:

1.包:

package ScopeTest;

/**

*

* @author lucifer

*/

public class TestScope {

private int i;

public TestScope(){

i = 0;

}

public int getNextInt(){

return ++i;

}

}

2.JSP代码:

<%--

Document : TestScope

Created on : 2009-10-3, 14:29:18

Author : lucifer

--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"

"http://www.w3.org/TR/html4/loose.dtd">

<jsp:useBean id="reqScope" class="ScopeTest.TestScope" scope="request"/>

<jsp:useBean id="appScope" class="ScopeTest.TestScope" scope="application"/>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>JSP Page</title>

</head>

<body>

Application Scope:

<jsp:getProperty name="appScope" property="nextInt"/>

<br>

Request Scope:

<jsp:getProperty name="reqScope" property="nextInt"/>

<form method="get" action="TestScope.jsp">

<input type="submit" value="Reget">

</form>

</body>

</html>

3.输出:

Application Scope: 1

Request Scope: 1

按下按钮后输出:

Application Scope: 2

Request Scope: 1

 
 
 
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