Applet and IIS

[Roda Aing]

Hi there!

I have an applet calss that works fine with my html page. Now, I want this thing to work with IIS. I coppied the files to my web site home directory on my windows xp pro machine, which IIS 5.1 is installed. It works fine. Then I the files coppied to another machine, windows 2000 server with IIS 5.0 installed. It doesn't work. I go to Internet Explorer and type "http://localhost/myfile.html", then i got the message saying that "Connection refused: connect". I don't know why it doesn't work. Can anyone give me some idea or advise?

Thanks,
Roda

[Joe Ess]

Is applet or the browser is giving you the error message? If it is the applet, what does the applet do?

[Roda Aing]

Yes, the applet is giving me an error message saying that "Connection refused: connect". My applet class is to read data from files and build graph.

Below is my applet code.

import java.io.*;
import java.net.*;
import java.awt.*;
import java.applet.Applet;

public class CallsGraph extends Applet{

public void paint(Graphics g){
setBackground(Color.white);
String ncalls = "";
int minute = 0;
String hour = "";
int count = 100;
int inthour;
int j = 0;
int y1 = 0;
int y2 = 0;
int y = 0;
try{
URL documentBase = getDocumentBase();
String path = documentBase.getPath();
path = path.substring(0, path.lastIndexOf("/"));

URL logfileURL1 = new URL(documentBase.getProtocol(), documentBase.getHost(), path + "/Total.log");
URLConnection connection1 = logfileURL1.openConnection();
InputStreamReader isr1 = new InputStreamReader(connection1.getInputStream());
BufferedReader br1 = new BufferedReader(isr1);
String lineRead1 = "";
g.setColor(Color.green);
while ((lineRead1 = br1.readLine()) != null){
ncalls = lineRead1.substring(7, 10);
y = Integer.parseInt(ncalls);
g.drawLine(count, 320-y, count, 320);
count++;
}
count = 100;

URL logfileURL2 = new URL(documentBase.getProtocol(), documentBase.getHost(), path + "/Record.log");
URLConnection connection2 = logfileURL2.openConnection();
InputStreamReader isr2 = new InputStreamReader(connection2.getInputStream());
BufferedReader br2 = new BufferedReader(isr2);
String lineRead2 = "";
while ((lineRead2 = br2.readLine()) != null){
ncalls = lineRead2.substring(7, 10);
minute = Integer.parseInt(lineRead2.substring(3, 5));
if (minute == 0)
{
hour = lineRead2.substring(0, 2);
inthour = Integer.parseInt(hour);
if (inthour%2 == 0)
{
hour = Integer.toString(inthour);
g.setColor(Color.black);
g.drawString(hour, count-3, 340);
for (int i = 20; i <= 320; i+=5)
{
g.drawString(".", count, i);
}
}
}
y = Integer.parseInt(ncalls);
if (count==100)
{
y1 = y;
}
else if (y2 > y1)
{
if ((y > y1) && (y > y2) )
{
y1 = y2;
}
else if ((y > y1) && (y < y2))
{
y1 = y;
}
}
else if (y1 > y2)
{
if ((y > y2) && (y < y1))
{
y1 = y;
}
else if ((y < y1) && (y < y2))
{
y1 = y2;
}
}
g.setColor(Color.red);
g.drawLine(count, 320-y, count, 320-y1);
y2 = y1;
y1 = y;
count++;
}
g.setColor(Color.black);
for (int i=20; i<320; i+=20){
ncalls = Integer.toString(i);
g.drawString(ncalls,70, 322-i);
g.drawString(". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .", 100, 320-i);
}
g.drawLine(100, 20, 100, 320);
g.drawLine(100, 320, 485, 320);
g.drawString(">", 485, 325);
g.setColor(Color.green);
g.drawString("All Operators",585, 100);
g.setColor(Color.red);
g.drawString("Mobitel (012)", 585, 130);
}catch(MalformedURLException murle){
g.drawString(murle.getMessage(), 100, 100);
getAppletContext().showStatus(murle.getMessage());
}catch(IOException ioe){
g.drawString(ioe.getMessage(), 100, 100);
getAppletContext().showStatus(ioe.getMessage());

}
}
}


Thanks anyway.
Roda

[Joe Ess]

The only thing I can think of is that this URL:

 
 URL logfileURL1 = new URL(documentBase.getProtocol(), documentBase.getHost(), path + "/Total.log");

does not match the original. Is IIS running on port 80 (standard HTTP port)?

[Roda Aing]

No, my IIS is running on port 8080. I failed to make it run on port 80. The error message is "Address is already in use". If the problem is with the port, how can I make it run on port 8080? Or, how can I make my IIS run on port 80?

Thanks,

Roda

[meimei li]

If your port is at 8080, then your url should be like this "http://localhost:8080/myfile.html". Without the port explicitly specified in URL, it defaults to 80.

[Roda Aing]

Yes, I typed this url, "http://localhost:8080/myfile.html", in the address box. The page was loaded, but the applet doesn't work. It shows the message saying that "Connection refused: connect".

Thanks anyway.

---------------
Roda

[Roda Aing]

Now, I have found that my code is working with standard http port, 80. But I have another service running on that port. That's why I use port 8080 instead. So, how can I make it work with port 8080? Does this relate to the following line of code?

URL logfileURL1 = new URL(documentBase.getProtocol(), documentBase.getHost(), path + "/Total.log");

If it does, can you correct the code for me? I don't know how to correct it. I am new to java.

Thanks in advance.

====================
Roda

[Joe Ess]

If you look at the documentation for java.net.URL, you will see that it has a number of constructors. You are using the 3-String constructor (String protocol, String host, String file). There is another one that takes 3 strings and a port number. You could also create a URL using a single String object and just concatenate all the parts together (i.e. protocol+host+port+path+file.

[Roda Aing]

Yes, your advice is really helpfull. I looked at the documentation and changed my code

From:

URL logfileURL1 = new URL(documentBase.getProtocol(), documentBase.getHost(), path + "/Total.log");

To:

URL logfileURL1 = new URL(documentBase.getProtocol(), documentBase.getHost(), 8080, path + "/Total.log");

It is now working fine with port 8080. So, my problem is fixed.

I appreciate all of your help very much, Joe Ess and meimei li.

Thanks alot.

===============
Roda