(Java) multipart/form-data HTTP POST

Demonstrates how to construct and send a multipart/form-data HTTP POST.

For more information, see https://chilkatsoft.com/http_multipart_form_data_post.asp

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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[])
  {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Sends the following multipart/form-data POST:

    // POST /xyz/something HTTP/1.1
    // Host: domain
    // Content-Type: multipart/form-data; boundary=------------090708030009010000030901
    // Content-Length: 2220
    // 
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="param1"
    // 
    // value1
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="param2"
    // 
    // value2
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="starfish20"; filename="starfish20.jpg"
    // Content-Type: image/jpeg
    // 
    // JPEG DATA HERE...
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="helloWorld"; filename="helloWorld.pdf"
    // Content-Type: application/pdf
    // 
    // PDF DATA HERE...
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="tinyA"; filename="tinyA.xml"
    // Content-Type: text/xml
    // 
    // XML DATA HERE...
    // --------------090708030009010000030901--
    // 

    CkHttpRequest req = new CkHttpRequest();
    req.put_HttpVerb("POST");
    req.put_ContentType("multipart/form-data");
    req.put_Path("/xyz/something");

    req.AddParam("param1","value1");
    req.AddParam("param2","value2");

    // Add some small files to the request. (Small so we can see what the full request looks like without too much data..)
    CkBinData bd = new CkBinData();
    boolean success = bd.LoadFile("qa_data/jpg/starfish20.jpg");
    req.AddBdForUpload("starfish20","starfish20.jpg",bd,"image/jpeg");

    success = bd.LoadFile("qa_data/pdf/helloWorld.pdf");
    req.AddBdForUpload("helloWorld","helloWorld.pdf",bd,"application/pdf");

    success = bd.LoadFile("qa_data/xml/tinyA.xml");
    req.AddBdForUpload("tinyA","tinyA.xml",bd,"text/xml");

    CkHttp http = new CkHttp();

    CkHttpResponse resp = http.SynchronousRequest("example.com",443,true,req);
    if (http.get_LastMethodSuccess() != true) {
        System.out.println(http.lastErrorText());
        return;
        }

    System.out.println("HTTP response status: " + resp.get_StatusCode());

    System.out.println("Received:");
    System.out.println(resp.bodyStr());
  }
}