求Java网站访问统计代码!
谁有这样的代码啊,借小弟用一用啊
------解决方案--------------------这个应该好做吧? 
 做一个静态变量,然后自动递增就行
------解决方案--------------------用servlet来计算吧
------解决方案--------------------import javax.servlet.http.*;  
 import javax.servlet.*;  
 import java.util.*;    
 public class onLineUser implements HttpSessionBindingListener {  
 public onLineUser(){  
 }    
 private Vector users=new Vector();  
 public int getCount(){  
 users.trimToSize();  
 return users.capacity();  
 }  
 public boolean existUser(String userName){  
 users.trimToSize();  
 boolean existUser=false;  
 for (int i=0;i <users.capacity();i++ )  
 {  
 if (userName.equals((String)users.get(i)))  
 {  
 existUser=true;  
 break;  
 }  
 }  
 return existUser;  
 }    
 public boolean deleteUser(String userName) {  
 users.trimToSize();  
 if(existUser(userName)){  
 int currUserIndex=-1;  
 for(int i=0;i <users.capacity();i++){  
 if(userName.equals((String)users.get(i))){  
 currUserIndex=i;  
 break;  
 }  
 }  
 if (currUserIndex!=-1){  
 users.remove(currUserIndex);  
 users.trimToSize();  
 return true;  
 }  
 }  
 return false;  
 }    
 public Vector getOnLineUser()  
 {  
 return users;  
 }  
 public void valueBound(HttpSessionBindingEvent e) {  
 users.trimToSize();  
 if(!existUser(e.getName())){  
 users.add(e.getName());  
 System.out.print(e.getName()+ "\t 登入到系统\t "+(new Date()));  
 System.out.println( " 在线用户数为: "+getCount());  
 }else  
 System.out.println(e.getName()+ "已经存在 ");  
 }    
 public void valueUnbound(HttpSessionBindingEvent e) {  
 users.trimToSize();  
 String userName=e.getName();  
 deleteUser(userName);  
 System.out.print(userName+ "\t 退出系统\t "+(new Date()));  
 System.out.println( " 在线用户数为: "+getCount());  
 }  
 }      
  <%@ page contentType= "text/html;charset=gb2312 " %>   
  <%@ page import= "onLineUser,java.util.* " %>   
  <jsp:useBean id= "onlineuser " class= "onLineUser " scope= "application "/>   
  <html>   
  <head>   
  <title> 搞定JSP在线人数 </title>   
  </head>   
  <body>   
  <center>   
  <p>  <h1> 登陆成功,欢迎您访问Java家! </h1>  </p>   
  </center>   
  <% session = request.getSession(false); %>   
  <%  
 String username=request.getParameter( "username ");  
 if (onlineuser.existUser(username)){  
 out.println( "用户 <font color=red>  "+username+ " </font> 已经登陆! ");  
 }else{  
 session.setMaxInactiveInterval(50); //Sesion有效时长,以秒为单位  
 session.setAttribute(username,onlineuser);  
 out.println( "欢迎新用户: <font color=red>  "+username+ " </font> 登陆到系统! ");  
 }  
 out.println( " <br> 当前在线用户人数: <font color=red>  "+onlineuser.getCount()+ " </font>  <br>  ");  
 Vector vt=onlineuser.getOnLineUser();  
 Enumeration e = vt.elements();  
 out.println( "在线用户列表 ");  
 out.println( " <table border=1>  ");  
 out.println( " <tr>  <td> 用户名 </td>  </tr>  ");  
 while(e.hasMoreElements()){  
 out.println( " <tr>  <td>  ");  
 out.println((String)e.nextElement()+ " <br>  ");  
 out.println( " </td>  </tr>