<%-- Created by IntelliJ IDEA. User: Administrator Date: 2019/6/25 Time: 8:27 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <% Object count = application.getAttribute("num"); if(count==null){ //如果为空则为第一次访问，将num值设置为1 application.setAttribute("num",1); }else { //将此值转换为string类型，再强转为int类型以进行自增运算 int i=Integer.parseInt(count+""); i++; application.setAttribute("num",i); } System.out.println("本网站访问次数为" + application.getAttribute("num")); %> <%=application.getAttribute("num")%> </body> </html>