老外写的一个jsp计数器

<!--This JSP hitcounter is released under the GNU GPL-license (BLA BLA) 
Copyright jsm@topmail.dk visit www.mycgiserver.com/~jsm222/start.jsp
for more info -->

<%@ page import="java.io.*;" %> 

<% 

BufferedReader inf = new BufferedReader(new FileReader
("/path/to/counter.txt"));
int tmp = Integer.parseInt(inf.readLine());
int i=0;

try {

i = Integer.parseInt(request.getSession().getValue("tal").toString());
} catch (NullPointerException t) {i=0; }

if (i==0) {
tmp++;

PrintWriter outf = new PrintWriter(new BufferedWriter
(new FileWriter("/path/to/counter.txt")));
outf.println(tmp);
outf.close();
inf.close();
request.getSession().putValue("tal", "1");
}

BufferedReader in = new BufferedReader(new FileReader("/path/to/counter.txt"));
%>
<%
String nuller="";
String kr = in.readLine();

for (int t=0; t < 8-kr.length(); t++) {
nuller=nuller+"0"; }
out.println(nuller + kr);
%>