JSP的application对象

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