Danny,
Yes, you can execute a system command. For example:
Runtime shell = Runtime.getRuntime();
File mappedDrive;
int tries = 3; // try the connection 3 times before reporting
an error
while (tries-- > 0)
{
// create the drive mapping
shell.exec("net use s: //Lab1");
// check mapping
mappedDrive = new File("S:\\");
if (mappedDrive.isDirectory())
{
// you're good to go
// break the loop
break;
}
}
if (tries == -1)
{
// report connection errors
}
Tim Gallagher
-----Original Message-----
From: Danny Rubis [mailto:[EMAIL PROTECTED]]
Sent: Friday, February 26, 1999 7:20 PM
To: [EMAIL PROTECTED]
Subject: Re: Servlet/ftp Design ?
Hey!
Timothy I thought of doing that but with NT's files system I can only
map to a
maximum of 26 drives until I run out of map letters. I think other
files
system and not restricted as such.
I could map a drive to say:
net use s: //Lab1
Then do my file transfer and when finished do this:
net use s: /delete /yes
But can I execute a system command from a servlet?
Timothy Gallagher wrote:
> Looks like a very good approach. Your other options, if you stay with
> the central collection, would be to map-a-drive / mount-a-directory.
>
> Tim Gallagher
>
> -----Original Message-----
> From: Danny Rubis [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, February 25, 1999 9:22 PM
> To: [EMAIL PROTECTED]
> Subject: Servlet/ftp Design ?
>
> Hey!
>
> Given more than 100 computers collecting test lab data. Each has a
> directory named C shared-out to the network, where log files are
written
> out to flat files. Another computer collects all of the data from
each
> of the lab computers and stores it in a database. A servlet provides
> access to the data to the Web browser. The log files are not sent to
> the database computer, but reside on the test lab computers.
>
> Does it make sense to do this:
> Install a TFTP server on each of the test lab computers.
> Instantiate a URL connection.
> Get the log file.
>
> The servlet code to get the log files like this:
>
> ...
> String host ="Lab1"; // the name of the lab
> computer
> String log="Log1.log"; //the log file
> String url = "ftp://" +host+ "/" +log";
> try { this.theURL = new URL(url); }
> catch ( MalformedURLException e) {
> System.out.println("Bad URL: " + theURL);
> }
> ...
> ...
> URLConnection conn = null;
> DataInputStream data = null;
> String line;
> StringBuffer buf = new StringBuffer();
>
> try {
> conn = this.theURL.openConnection();
> conn.connect();
>
> //Connection opened...
> data = new DataInputStream(new BufferedInputStream(
> conn.getInputStream()));
>
> // get the log file
> while ((line = data.readLine()) != null) {
> buf.append(line + "\n");
> }
> }
> catch (IOException e) {
> System.out.println("IO Error:" + e.getMessage());
> }
>
>
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