(Java) WhatsApp Cloud API Send Message

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Demonstrates how to send a message using the WhatsApp Cloud API (Business App)

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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.

    CkHttp http = new CkHttp();
    boolean success;

    // The following JSON is sent in the request body.

    // {
    //   "messaging_product": "whatsapp",
    //   "to": "16302581871",
    //   "type": "template",
    //   "template": {
    //     "name": "hello_world",
    //     "language": {
    //       "code": "en_US"
    //     }
    //   }
    // }

    CkJsonObject json = new CkJsonObject();
    json.UpdateString("messaging_product","whatsapp");
    json.UpdateString("to","15555555555");
    json.UpdateString("type","template");
    json.UpdateString("template.name","hello_world");
    json.UpdateString("template.language.code","en_US");

    http.put_AuthToken("EAANrS5....yFB9Ma");
    http.SetRequestHeader("Content-Type","application/json");

    CkHttpResponse resp = http.PostJson3("https://graph.facebook.com/v18.0/111111111111111/messages","application/json",json);
    if (http.get_LastMethodSuccess() == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    System.out.println(resp.get_StatusCode());
    System.out.println(resp.bodyStr());

    // Here's a screenshot of our WhatsApp test app.

    // 
  }
}