(基础)计算访问次数..

最新推荐文章于 2021-08-27 20:25:34 发布

Kipen

最新推荐文章于 2021-08-27 20:25:34 发布

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CC 4.0 BY-SA版权

文章标签： file import html

本文链接：https://blog.youkuaiyun.com/Kipen/article/details/1436513

<%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="java.io.*" %>
<html>
<body>
<%!
int number=0;
File file=new File("count.txt");
synchronized void countPeople()//计算访问次数的同步方法
{
 if(!file.exists())
 {
 number++;
 try{
 file.createNewFile();
 FileOutputStream out=new

FileOutputStream("count.txt");
DataOutputStream dataOut=new

DataOutputStream(out);
             dataOut.writeInt(number);
             out.close();
             dataOut.close();
          }
       catch(IOException ee){}
      }
       else
      {
       try{
          FileInputStream in=new

FileInputStream("count.txt");
DataInputStream dataIn=new

DataInputStream(in);
          number=dataIn.readInt();
          number++;
          in.close();
          dataIn.close();
          FileOutputStream out=new

FileOutputStream("count.txt");
DataOutputStream dataOut=new

DataOutputStream(out);
 dataOut.writeInt(number);
 out.close();
 dataOut.close();
 }
 catch(IOException ee){}
 }
 }%>
<% countPeople(); %>
你是第<%= number %>个访问本站的客户
</body>
</html>