计数器

<html>
<body>
<%@ page import="java.io.*"%>
<%  
  BufferedReader file;
  String countFile="c:\\count.txt";
 
  String readStr=null;
  int writeStr=1;
  try
     {
         file=new BufferedReader(new FileReader(countFile));
        readStr=file.readLine();
        }catch(IOException e)
         {
            System.out.println("read data error");
         }
if(readStr==null) readStr="no data";
else
   {
    writeStr=Integer.parseInt(readStr)+1;
   }try{
       PrintWriter pw;
        pw=new PrintWriter(new FileOutputStream(countFile));
        pw.println(writeStr);
        pw.close();
} catch(IOException e)
 {
   System.out.println(e.getMessage());
 }
   %>
<h1> you are the </h1>
<h3> <%=readStr%></h3>
<h1> vistor to the page</h1>
</body>
</html>