JSP application对象及其常用方法

application对象及其常用方法

这里写图片描述

<%@page import="java.util.Enumeration"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>application内置对象</h1>
<%
  application.setAttribute("postcode", "100000");
  application.setAttribute("city", "北京");
  application.setAttribute("email", "lisi@126.com");
%>
所在的城市是：<%=application.getAttribute("city") %><br>
application中的属性有:<%
  Enumeration attributes = application.getAttributeNames();
  while(attributes.hasMoreElements()){
      out.println(attributes.nextElement()+"&nbsp;&nbsp;<br>");
  }
%><br>
JSP(SERVELET)引擎名及版本号:<%=application.getServerInfo() %>
</body>
</html>

这里写图片描述