(Java) Facebook Upload Photo from Local File

Uploads a new photo with a caption from a local file.

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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 assumes Chilkat HTTP to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http = new CkHttp();

    CkHttpRequest req = new CkHttpRequest();
    req.put_HttpVerb("POST");
    req.put_ContentType("multipart/form-data");
    req.put_Path("/v2.7/me/photos");

    // Use the previously obtained access token.
    // Note: The publish_actions scope is required to upload a photo.
    req.AddHeader("Authorization","Bearer FACEBOOK-ACCESS-TOKEN");

    // Send an "Expect: 100-continue" header in the request.
    // This causes the HTTP server to end a 100-continue response
    // immediately after receiving the HTTP header.  The client
    // (Chilkat) will receive this intermediate response, and if
    // it's not an error response, it knows that the HTTP server will
    // accept the data that is forthcoming.
    // The alternative is to get an error response after trying to upload
    // the entire contents of the files.
    req.AddHeader("Expect","100-continue");

    // Set a photo caption.
    req.AddParam("caption","Here are some penguins!");

    // Additional parameters can be added to the request by 
    // calling AddParam once per parameter.  
    // See https://developers.facebook.com/docs/graph-api/reference/user/photos
    // for more information about other optional parameters.

    // Indicate the local file to be uploaded.
    boolean success = req.AddFileForUpload("source","qa_data/jpg/penguins2.jpg");
    if (success != true) {
        System.out.println(req.lastErrorText());
        return;
        }

    // Upload the image file..
    CkHttpResponse resp = http.SynchronousRequest("graph.facebook.com",443,true,req);
    if (http.get_LastMethodSuccess() != true) {
        System.out.println(http.lastErrorText());
        return;
        }

    // Examine the response body:
    String responseJson = resp.bodyStr();
    System.out.println(responseJson);

    // The response contains JSON, such as this:
    // {"id":"10210224963435862","post_id":"10224048320139890_10210224963435862"}
  }
}