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0 :םויה תוסינכ
49 :שדוחה תוסינכ
1 :ןיילנוא םישלוג
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JSPב םיטפירקס
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טושפ םירקבמ הנומ
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םיזיע בלוח :רבחמה םש
http://www.builder.co.il :תיב-רתא
:תורעה\תויחנה
.םירקבמה רפסמ תא םושריש םיצורש הפיא הז תא םימש
>
servlet code=CounterServlet>
:דוק
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import javax.servlet.http.*;
import java.io.*;
import java.net.*;
//
//
// CounterServlet
//
// Description :
//
// Server-Side-Include servlet, tracking page hitcounts
//
// Written by : David Reilly
// Last modified : June 05, 1998
//
//
public class CounterServlet extends HttpServlet
{
public void service ( HttpServletRequest request, HttpServletResponse response ) throws IOException
{
doGet(request, response);
}
public void doGet ( HttpServletRequest request, HttpServletResponse response ) throws IOException
{
// Obtain an output writer for printing information
PrintWriter out = response.getWriter();
// Get request url
StringBuffer requestUrl = HttpUtils.getRequestURL ( request );
// Get request path
String requestPath;
try
{
// Convert to url
URL url = new URL (requestUrl.toString());
// Get path
requestPath = url.getFile();
}
// Was the url invalid
catch (MalformedURLException mue)
{
out.print ("[ERROR]");
return;
}
// Substitute all / characters for .
requestPath = requestPath.replace('/', '.');
// Get number for the counter
int num = getNumber(requestPath);
// Print number to screen
out.print (num);
// Increment number
num++;
// Write number to disk
writeNumber(requestPath, num);
out.flush();
}
public String getServletInfo()
{
return new String ("CounterServlet");
}
public void writeNumber(String counter, int number) throws IOException
{
FileWriter fwriter = new FileWriter(counter);
PrintWriter pwriter = new PrintWriter(fwriter);
pwriter.println (number);
fwriter.close();
}
public int getNumber(String counter) throws IOException
{
try
{
FileReader freader = new FileReader(counter);
BufferedReader breader = new BufferedReader (freader);
// Read a line
String line = breader.readLine();
// Close the file so others can access it
freader.close();
Integer integer = new Integer (line);
return integer.intValue();
}
catch (FileNotFoundException fnfe)
{
return 0;
}
}
}
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