Attach a file to HttpURLConnection

[Dave Robbins]

Hello All,
I've got an applet that talks to a webserver using an HttpURLConnection
I need to send a binary file to the server (an exe)
I've succeded in sending a text file as POST data but I believe sending a binary file is a bit more complex
Can anyone point me to some info or an example?

Thanx
Dave

[Joe Ess]

Yes it is. Binary data should be sent as a multi-part form so you don't have to encode every byte. Use the Jakarta Commons File Upload package so you don't have to reinvent the wheel.

[Dave Robbins]

Thanks for the quick reply Joe
If I'm not mistaken, the fileupload package if for use in handling the upload on the server side. My problem is handling things on the applet/client side. Am I missing something??
Unfortunately I gotta use ASP on the server side
(insert tearful smile here)

So I've got something like this

 URL url = new URL("http://www.foobar.com/send.asp");
 HttpURLConnection m_connection;
 m_connection = (HttpURLConnection)url.openConnection();
 String parameters = "data=some_post_data";
 m_connection.setDoOutput(true);
 m_connection.setRequestMethod("POST");                 m_connection.setRequestProperty("Content-Type", "MultiPart/Form-Data");
  byte bytes[] = parameters.getBytes();
  m_connection.setRequestProperty("Content-length", "" + bytes.length);
  m_connection.connect();
  OutputStream out = m_connection.getOutputStream();
  out.write(bytes);
  out.flush();
 

And want to attach a file
Prior to this if poped a JFileChooser dialog and let the user select the file

Dave

[Joe Ess]

Whoops. Your post was a little vague as to which end you were interested in. The client side as implemented by the Jakarta Project is HttpClient. Have a look at the multipart post method doc.

[Dave Robbins]

Thanx Joe
You Da Man!!

Dave

[Dave Robbins]

Thanx Joe
You Da Man!!

Dave