Java web网站访问量的统计

   
  <%! int number = 0; File file = new File("count.txt"); synchronized void countPeople() { if(!file.exists()) { number++; try{ file.createNewFile(); FileOutputStream out = new FileOutputStream("count.txt"); DataOutputStream dataOut = new DataOutputStream(out); dataOut.writeInt(number); dataOut.close(); }catch(IOException ex){} } 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 ex){} } %> <% countPeople(); %> 
 您是第 <%=number %> 个访问网站的客户。