Processing 1.0 - Processing Discourse

megamu YaBB Newbies Offline Posts: 15	FTP Upload Nov 5^th, 2005, 2:03am Is it possible to create a sort of ftp file upload program in processing? How might you go about opening a dialog to have a user browse their computer for a file? How might processing connect and upload to an ftp server? I don't think I've seen either of these done, how might I start going about it?

watz

Re: FTP Upload
Reply #1 - Nov 5^th, 2005, 1:57pm

You can find some links to open source FTP libraries for Java here: http://del.icio.us/garuda/ftp

Personally I have used edtFTPj with success, it's not very complicated and seems to do the job. Just make sure you capture Exceptions appropriately, it's generally a bad idea to send a few hundred connection attempts per second...

This is the URL for edtFTPj:
http://www.enterprisedt.com/products/edtftpj/overview.html

marius watz // unlekker // code & form // Generator.x

peony3000 YaBB Newbies Offline Posts: 5	Re: FTP Upload Reply #2 - Mar 13^th, 2006, 10:51pm Hey guys What happened? Did you get it to work? How about a code sample and some easy to follow library type instructions? Cheers Andy

mark hill

Re: FTP Upload
Reply #3 - Mar 20^th, 2006, 11:18am

Thanks for the heads up Marius!

I've just set this up and have a source file that I'll post when I get home that demonstrates the usage.

Here goes:

Make sure you download the code as references above. pop the .jar into your directory and then do this to test:

All logs are printed to the Procssing monitor.

Any probs just post here!

Good luck.
Code:




FTPClient ftp;

void setup () {

  try {
    // set up client
    ftp = new FTPClient();
    ftp.setRemoteHost("YourFtp"); // ie. ftp.site.com
    FTPMessageCollector listener = new FTPMessageCollector();
    ftp.setMessageListener(listener);

    // connect
    println ("Connecting");
    ftp.connect();

    // login
    println ("Logging in");
    ftp.login("yourUsername", "yourPassword");

    // set up passive ASCII transfers
    println ("Setting up passive, ASCII transfers");
    ftp.setConnectMode(FTPConnectMode.PASV);
    ftp.setType(FTPTransferType.ASCII);

    // get directory and print it to console
    println ("Directory before put:");

    String[] files = ftp.dir(".", true);
    for (int i = 0; i < files.length; i++)
	println (files[i]);

    // copy file to server
    println ("Putting file");
    ftp.put("/localPath/test.txt", "/remotePath/test.txt");

    // get directory and print it to console
    println ("Directory after put");

    files = ftp.dir(".", true);
    for (int i = 0; i < files.length; i++)
     println (files[i]);

    // copy file from server

    println ("Getting file");

    ftp.get("/localPath/test.txt" + ".copy", "/remotePath/test.txt");

    // delete file from server
    println ("Deleting file");
    ftp.delete("/remotePath/test.txt");

  
    // get directory and print it to console
    println ("Directory after delete");
    files = ftp.dir("", true);
    for (int i = 0; i < files.length; i++)
	println (files[i]);

    // Shut down client
    println ("Quitting client");
    ftp.quit();

    String messages = listener.getLog();
    println ("Listener log:");

    println(messages);
    println ("Test complete");

  } catch (Exception e) {

    println ("Demo failed");

  }

}

Bob's your uncle!

watz Full Member Offline Posts: 202	Re: FTP Upload Reply #4 - Mar 20^th, 2006, 5:02pm Excellent, Mark. I was meaning to write this up, but didn't get around to it. If you posted this tip on processinghacks.com too I'm sure everybody would be eternally grateful...
	marius watz // unlekker // code & form // Generator.x

mark hill Senior Member Offline Posts: 316	Re: FTP Upload Reply #5 - Mar 21^st, 2006, 9:17am Sure thing! I'll get around to it in the next day or two. Seems to be working nicely off of threads too! So you don't have to hang the cpu when transfering files. Thanks to JohnG for having posted an threadedImageLoader elsewhere on the forum for giving me the idea!
	« Last Edit: Mar 21^st, 2006, 12:39pm by mark hill »

watz

Re: FTP Upload
Reply #6 - Mar 21^st, 2006, 5:30pm

It's definitely a good idea to use threads for comm stuff like that. Just implement a proper way of keeping track of what tasks have been completed etc.

Proper exception-handling with timeouts and delay-before-retry is also good, you might want to mention that. I got banned from my own web hosting server for trying to access my own site a few thousand times a second. I believe they call that a denial-of-service attack...

marius watz // unlekker // code & form // Generator.x

mark hill

Re: FTP Upload
Reply #7 - Mar 21^st, 2006, 5:51pm

I've got a simple local and remote index system in place that just synchronizes the folders, so if you walk out of range or lose the connection, once it's re-established uploading/ downloading recommences.

I had guessed a bit about hammering the server, and so have a timeout after 10 errors, to leave things off for a while before retrying.

Does anyone know what the standards are for ftp in terms of no of tries, timeouts etc., so that one can be sure to conform and avoid your misfortune.

peony3000

Re: FTP Upload
Reply #8 - Mar 29^th, 2006, 11:56am

Hi

This works great, I've added some notes and some more methods so it's a bit easier to follow (perhaps!)

Do this:

Download edtftpj-1.5.2.zip from http://www.enterprisedt.com/products/edtftpj/download/edtftpj-1.5.2.zip

Create a "code" folder in the Sketch Folder

Unzip and copy the file edtftpj-1.5.2.jar into the code folder

Run this (needs editing for web site login):

// Declare a new FTPClient
FTPClient ftp;

// Declare an array to hold directory listings
String[] files;

void setup ()
{

try
{

// set up a new ftp client
ftp = new FTPClient();
ftp.setRemoteHost("www.whatever.webhosting.com"); // ie. ftp.site.com

// set up listener
FTPMessageCollector listener = new FTPMessageCollector();
ftp.setMessageListener(listener);

// connect to the ftp client
println ("Connecting");
ftp.connect();

// login to the ftp client
println ("Logging in");
ftp.login("whateverAdmin", "whateverPassword");

// set up in passive mode
println ("Setting up passive, ASCII transfers");
ftp.setConnectMode(FTPConnectMode.PASV);

// set up for ASCII transfers
ftp.setType(FTPTransferType.ASCII);

// get the directory contents and print it to console
println ("Directory before put:");
files = ftp.dir(".", true);
for (int i = 0; i < files.length; i++)
{
println (i+" "+files[i]);
}

// copy ASCII file to server and overwrite the existing file
println ("Putting file");
ftp.put("C:\\Desktop\\test.txt", "test.txt", false);

// get directory and print it to console
println ("Directory after put");
files = ftp.dir(".", true);
for (int i = 0; i < files.length; i++)
{
println (i+" "+files[i]);
}

// copy ASCII file from server
println ("Getting file");
ftp.get("C:\\Desktop\\test.txt" + ".copy", "test.txt");

// delete file from server
println ("Deleting file");
ftp.delete("test.txt");

// get directory and print it to console
println ("Directory after delete");
files = ftp.dir("", false);
for (int i = 0; i < files.length; i++)
{
println (i+" "+files[i]);
}

// change directory
println("Moving up a directory");
ftp.cdup();

// change directory in a different way
println("Moving up a directory");
ftp.cdup();

// change directory in a different way
println("Moving up a directory");
ftp.chdir("..");

// get directory and print it to console
println ("Directory listing after move");
files = ftp.dir("", true);
for (int i = 0; i < files.length; i++)
{
println (i+" "+files[i]);
}

println("Moving into a directory");
ftp.chdir(files[2].substring(55));

try
{
// try to make a directory
println("Make a new directory");
ftp.mkdir("tempDir");
}
catch (Exception e)
{
//Print out the type of error
println("Error "+e);
}

//println("Delete a directory");
//ftp.rmdir("tempDir");

println("Moving into a directory");
ftp.chdir("tempDir");

// change directory in a different way
println("The current directory");
println(ftp.pwd());

// get a directory listing and print it to console
println ("Directory listing after making a new directory");
files = ftp.dir("", true);
for (int i = 0; i < files.length; i++)
{
println (i+" "+files[i]);
}

// set up for ASCII transfers
ftp.setType(FTPTransferType.BINARY);

// copy BINARY file to server and overwrite the existing file
println ("Putting file");
ftp.put("C:\\Desktop\\bath-time.jpg", "bath-time.jpg", false);

// run a raw FTP command on the server
try
{
println("Run a FTP command");
// add some commands if required
String[] ftpParams = { "" };
// send the FTP command followed by params
ftp.quote( "SITE CHMOD 755 /web/tempDir/bath-time.jpg", ftpParams);
}
catch (Exception e)
{

//Print out the type of error
println("Message "+e);

}

// Shut down client
println ("Quitting client");
ftp.quit();

// Print out the listener messages
String messages = listener.getLog();
println ("Listener log:");

// End message - if you get to here it must have worked
println(messages);
println ("Test complete");

}
catch (Exception e)
{

//Print out the type of error
println("Error "+e);

}

}

TM

Re: FTP Upload
Reply #9 - Apr 4^th, 2008, 1:10am

Hi,

I was experimenting this ftp code on my pc. It works but the image has to be really small. like 4.00 KB.
Is it normal?
I get this error message after a minute or two of trying 'putting file':

Error java.net.SocketException: Connection reset by peer: socket write error

The file appears on the server when I look with filezilla but is 0kb.

If you have any ideas or other solutions. I found this from the alpha board. It seems to be a solution that fjen came up with but the link is broken.
http://processing.org/discourse/yabb/YaBB.cgi?board=Integrate;action=display;num=1106908696
(reply#2 from fjen).

I don't really want to faff around with php as I don't know much about it and knowing how to do this with processing could bring me to more experimentations.

))<>(( www.f u c k-dance-lets-art.com

TM

Re: FTP Upload
Reply #10 - Apr 4^th, 2008, 11:51am

hello again.
'la nuit m'a porte conseil' obviously.

My firewall ( kerio ) was somehow blocking big files transfers. This firewall was also blocking me from accessing my email and blocking windows update.
I now use the windows' build in firewall and it works great!!

Thanks for finding a way to use ftp transfers on processing.
Is there a way to monitor the advancement of the upload?

))<>(( www.f u c k-dance-lets-art.com

angelo YaBB Newbies Offline Posts: 16	Re: FTP Upload Reply #11 - Mar 23^rd, 2009, 10:55pm thanks! work great

marieidat YaBB Newbies Offline Posts: 7	Re: FTP Upload Reply #12 - Apr 28^th, 2009, 12:06pm Thanks. This is great.

codecoaster

Re: FTP Upload
Reply #13 - May 29^th, 2009, 7:50am

This works great for me when I use on local machine. Thank you!
When a user places an order their choices are sent to the orders directory on my server.
I was very disappointed when I uploaded the application to the server, however.
I get errors like this:
"java.lang.NoClassDefFoundError: com/enterprisedt/net/ftp/FTPMessageListener"
After a little research I got the impression that its something to do with using extra libraries in an exported application. I'm not sure how to deal with this any help would really be appreciated!
I cant post code as this is my first post

action_owl

Re: FTP Upload
Reply #14 - May 31^st, 2009, 2:47pm

I dunno if this helps anyone but I have been using the follwing method for FTP in processing:

1) Create ftp batch file with printwriter
2) run it with open()
3) delete all text in the batch file OR have a script that deletes the batchfile(to remove sensitive username/password info)

it's a quick kludge that has been working for me, hope it helps someone out there.

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