JSP的application对象

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一 简介


 
 
二 常用方法


 
 
三 实例
<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
   
    <title>My JSP 'index.jsp' starting page</title>
        <meta http-equiv="pragma" content="no-cache">
        <meta http-equiv="cache-control" content="no-cache">
        <meta http-equiv="expires" content="0">   
        <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
        <meta http-equiv="description" content="This is my page">
        <!--
        <link rel="stylesheet" type="text/css" href="styles.css">
        -->
  </head>
 
  <body>
    <h1>application内置对象</h1>
    <%
       application.setAttribute("city", "北京");
       application.setAttribute("postcode", "10000");
       application.setAttribute("email", "lisi@126.com");
      
    %>
         所在城市是:<%=application.getAttribute("city") %><br>
    application中的属性有:<%
         Enumeration attributes = application.getAttributeNames();
         while(attributes.hasMoreElements())
         {
            out.println(attributes.nextElement()+"&nbsp;&nbsp;");
         }
    %><br>
    JSP(SERVLET)引擎名及版本号:<%=application.getServerInfo() %><br>             
                  
  </body>
</html>
 
四 运行结果

 



 
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