代码 <%@ page language="java" contentType="text/html" pageEncoding="utf-8"%>< <html> <head><title>简单计数器</title> </head> <body> <%! //声明标识 int number=0; synchronized int count(){ number++; return number; } %> <center>第<%=count()%>个访问者</center> </body> </html>