常用方法：
<%@ page import="java.util.Enumeration" %><%-- Created by IntelliJ IDEA. User: Administrator Date: 2020/2/13 Time: 21:19 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>application对象</title> </head> <body> <p>application内置对象</p> <hr> <% application.setAttribute("city", "太原"); application.setAttribute("postcode", "1000"); application.setAttribute("email", "1234@163.com"); %> 所在城市是：<%=application.getAttribute("city")%><br> application中的属性有：<% Enumeration attributes = application.getAttributeNames(); //枚举 while (attributes.hasMoreElements()){ out.println(attributes.nextElement()+"  "); } %><br> jsp(servlet)引擎名及版本号：<%=application.getServerInfo()%><br> </body> </html>
结果：
