uploading file in JNLP application

//Servlet

   public void doPost(HttpServletRequest req, HttpServletResponse res) {

      System.out.println("... In Upload.doPost() ...");

      try {   
         DiskFileItemFactory factory = new DiskFileItemFactory();
         ServletFileUpload upload = new ServletFileUpload(factory);
         upload.setSizeMax(100000000);

         // maximum size that will be stored in memory
         //factory.setSizeThreshold(1096);
         // the location for saving data that is larger than getSizeThreshold()
         //factory.setRepository(new File("/tmp"));

         List items = upload.parseRequest(req);

         String fileName = "";
         long maxSize = 0;
 
         Iterator iter = items.iterator();
         while (iter.hasNext()) {
            DiskFileItem item = (DiskFileItem) iter.next();

            // filename on the client
            fileName = item.getName();
            maxSize = item.getSize();

            // write the file
            item.write(new File("/tmp", fileName));
          }       
      }
      catch(Exception e) {
         System.out.println("<br>\nError: "+e.getMessage());
      }       
   }

// test app

import java.io.*;
import java.net.*;

public class UploadTest  {
  public static void main(String[] args) throws Exception { 
    HttpURLConnection conn = null; 
    BufferedReader br = null; 
    DataOutputStream dos = null; 
    DataInputStream inStream = null; 

    InputStream is = null; 
    OutputStream os = null; 
    boolean ret = false;
    String StrMessage = "";
    String fileName = "C:\\test.zip";

    String lineEnd = "\r\n"; 
    String twoHyphens = "--"; 
    String boundary =  "*****";

    int bytesRead, bytesAvailable, bufferSize;
    byte[] buffer; 
    int maxBufferSize = 1*1024*1024;
    String responseFromServer = "";
    String urlString = "http://localhost:8080/FileUpload/requestupload";

    try {   
      //------------------ CLIENT REQUEST 
      FileInputStream fileInputStream = new FileInputStream(new File(fileName));

      // open a URL connection to the Servlet 
      URL url = new URL(urlString);
      System.out.println("url = " +url);

      // Open a HTTP connection to the URL 
      conn = (HttpURLConnection) url.openConnection();
      System.out.println("conn = " + conn);

      // Allow Inputs
      conn.setDoInput(true);

      // Allow Outputs 
      conn.setDoOutput(true);

      // Don't use a cached copy.
      conn.setUseCaches(false);

      // Use a post method. 
      conn.setRequestMethod("POST");
      conn.setRequestProperty("Connection", "Keep-Alive");
      conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);

      dos = new DataOutputStream( conn.getOutputStream() );
      dos.writeBytes(twoHyphens + boundary + lineEnd);
      dos.writeBytes("Content-Disposition: form-data; name=\"upload\";"
         + " filename=\"" + fileName +"\"" + lineEnd);
      dos.writeBytes(lineEnd);

      bytesAvailable = fileInputStream.available();
      bufferSize = Math.min(bytesAvailable, maxBufferSize);
      buffer = new byte[bufferSize];

      bytesRead = fileInputStream.read(buffer, 0, bufferSize);

      while (bytesRead > 0) {
        dos.write(buffer, 0, bufferSize);
        bytesAvailable = fileInputStream.available();
        bufferSize = Math.min(bytesAvailable, maxBufferSize);
        bytesRead = fileInputStream.read(buffer, 0, bufferSize);
      }

      // send multipart form data necesssary after file data... 

      dos.writeBytes(lineEnd);
      dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

      fileInputStream.close();
      dos.flush();
      dos.close();
    }
    catch (MalformedURLException ex) {
      System.out.println("From ServletCom CLIENT REQUEST:"+ex);
    }

   catch (IOException ioe) {

     System.out.println("From ServletCom CLIENT REQUEST:"+ioe);
   }

   //------------------ read the SERVER RESPONSE

   try {
     inStream = new DataInputStream ( conn.getInputStream() );
     String str;
     while (( str = inStream.readLine()) != null) {
       System.out.println("Server response is: "+str);
       System.out.println("");
     }
     inStream.close();
   }
   catch (IOException ioex) {
     System.out.println("conn = " + conn);
     System.out.println("From (ServerResponse): "+ioex);
   }
 }
}

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