Post a file to servlet from application

[Phillip Rhodes]

Hi.

I am trying very hard to post a binary file and some other parameters to a
servlet from a java application.  The servlet will look at the parameters
and the associated file and write it to disk.  I am having problems getting
it in the right format.

I can post any number of name=value pairs fine.  However, when I add my
file byte array after my name=value pairs, it will generate an illegal
argument exception in my servlet when I call req.getParameter("name").
 This means that I have the format wrong.

Another question:  When I send the binary data, do I have to encode that
also?

Here's the Java application code that posts to the servlet.  The servlet
stuff is pretty simple.

Thanks.  It's close to 1AM and I can't get this fixed!!
Phillip

    URL url;
    URLConnection urlConn;
    DataOutputStream printout;
    DataInputStream input;
    // URL of CGI-Bin script.
    url = new URL ("http://localhost/servlet/FolderServlet");

    // URL connection channel.
    urlConn = url.openConnection();

    // Let the run-time system (RTS) know that we want input.
    urlConn.setDoInput (true);

    // Let the RTS know that we want to do output.
    urlConn.setDoOutput (true);

    // No caching, we want the real thing.
    urlConn.setUseCaches (false);

    // Specify the content type.
    urlConn.setRequestProperty ("Content-Type",
"application/x-www-form-urlencoded");

    // Send POST output.
    printout = new DataOutputStream (urlConn.getOutputStream ());

    String content = "username=" + URLEncoder.encode ("user") +
"&password=" + URLEncoder.encode ("pass");
    content += "&todo=sendfile";
    printout.writeBytes (content);
    File zipfile_to_send = new File("file.zip");
      //in
    final int iBufLen = 512;  // default, change as needed
    int iCount = 0;
    BufferedInputStream filein = new BufferedInputStream(new
FileInputStream(zipfile_to_send), iBufLen );
    byte[] bytes = new byte[ iBufLen ];
    while( true )
    {
      try{
          iCount = filein.read( bytes, 0, iBufLen );
        if( iCount == -1 )
        {
          break;        // EOS
        }

//Should I be encoding the bytes that I am sending???

        printout.write(bytes,0,iCount);
      }         catch( IOException ioe ){
        ioe.printStackTrace();
            break;
      }
            } // end while
    filein.close();
    printout.flush ();
    printout.close ();
    }
    String inputLine;
          BufferedReader in = new BufferedReader(new
InputStreamReader(urlConn.getInputStream()));
    StringBuffer sb = new StringBuffer();
          while ((inputLine = in.readLine()) != null)
    {
      System.out.println("inputLine=" + inputLine);
      sb.append(inputLine);
    }
          in.close();

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