(Java) Asynchronous HTTP Upload

Demonstrates how to do an HTTP upload asynchronously in a background thread.

A server-side C# example showing how to receive an upload is located at C# ASP.NET Code to Receive Upload

Chilkat Java Downloads Java Libs for Windows, MacOS, Linux, Alpine Linux, Solaris Java Libs for Android

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    CkUpload upload = new CkUpload();

    // Specify the page (ASP, ASP.NET, Perl, Python, Ruby, CGI, etc)
    // that will process the HTTP Upload.
    upload.put_Hostname("www.mywebserver.com");
    upload.put_Path("/receiveUpload.aspx");

    // Add one or more files to be uploaded.
    upload.AddFileReference("file1","dude.gif");
    upload.AddFileReference("file2","pigs.xml");
    upload.AddFileReference("file3","sample.doc");

    // Begin the HTTP upload in a background thread:
    boolean success = upload.BeginUpload();
    if (success != true) {
        System.out.println(upload.lastErrorText());
        }
    else {
        System.out.println("Upload started...");
        }

    // Wait for the upload to finish.
    // Print the progress as we wait...
    while ((upload.get_UploadInProgress() == true)) {
        // We can abort the upload at any point by calling:
        // upload.AbortUpload();

        // Display the percentage complete and the number of bytes uploaded so far..
        // The total upload size will become set after the upload begins:
        System.out.println(upload.get_PercentUploaded() + "% " + upload.get_NumBytesSent() + "/" + upload.get_TotalUploadSize());

        // Sleep 2/10ths of a second.
        upload.SleepMs(200);

        }

    // Did the upload succeed?
    if (upload.get_UploadSuccess() == true) {
        System.out.println("Files uploaded!");
        }
    else {
        System.out.println(upload.lastErrorText());
        }
  }
}