PageCounterServlet.java
/*
* @(#)PageCounterServlet.java
*
* Copyright (c) 1998-2000 Servertec. All Rights Reserved.
*
* This software is the proprietary and confidential property of Servertec.
* Use only in accordance with the terms of the license agreement.
*
* SERVERTEC MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY
* OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT. SERVERTEC SHALL NOT BE LIABLE FOR ANY
* DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*
* THIS NOTICE MUST NOT BE ALTERED NOR REMOVED.
*
* CopyrightVersion 1.0
*/
import java.util.Properties;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletOutputStream;
import javax.servlet.ServletException;
import stec.iws.Utils;
import stec.iws.iws;
public class PageCounterServlet extends HttpServlet
{
public void service(HttpServletRequest _request, HttpServletResponse _response) throws ServletException, IOException
{
try
{
_response.setContentType("text/html");
ServletOutputStream out = _response.getOutputStream();
out.println("");
out.println("Page Counter Servlet");
out.println("");
out.println("Page Counter Servlet
");
out.println("This page was accessed " + pageCounter(_request) + " times.");
out.println("");
out.println("[ refresh ]");
out.println("");
out.println("");
out.close();
}
catch(Exception ex)
{
throw new ServletException(ex.getMessage());
}
}
private int pageCounter(HttpServletRequest _request) throws Exception
{
String url = _request.getServletPath();
if(url == null)
{
url = _request.getPathTranslated();
}
url = Utils.encodeURL(url);
Properties props = new Properties();
int pageCounter;
String basedir = iws.getWorkDirectory("./samples/servlets");
File fh = new File(basedir, "page_counters.dat");
if(fh.exists())
{
FileInputStream is = new FileInputStream(fh);
props.load(is);
is.close();
pageCounter = Integer.parseInt(props.getProperty(url, "0")) + 1;
}
else
{
pageCounter = 1;
}
props.put(url, String.valueOf(pageCounter));
FileOutputStream os = new FileOutputStream(fh);
props.save(os, "page counters");
os.close();
return pageCounter;
}
public String getServletInfo()
{
return "PageCounterServlet";
}
}