Java

WhatsApp - Send a Linked Media Message

Demonstrates how to send a media message where the media content is a link to an external URL. This example demonstrates sending an image (JPG) media message. Java

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[])
  {
    boolean success = false;

    //  This example assumes the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkHttp http = new CkHttp();

    //  Implements the following CURL command:

    //  curl -X POST https://example.com/v1/messages \
    //    -H "Authorization: Bearer your-auth-token" \
    //    -d '
    //  {
    //      "recipient_type": "individual-or-group",
    //      "to": "whatsapp-id-or-group-id",
    //      "type": "image",
    //      "image": {
    //        "link": "http(s)://the-url",
    //        "provider": {
    //          "name" : "provider-name"
    //        },
    //      "caption": "your-image-caption"
    //    }
    //  }'

    //  Use the following online tool to generate HTTP code from a CURL command
    //  Convert a cURL Command to HTTP Source Code

    //  Use this online tool to generate code from sample JSON:
    //  Generate Code to Create JSON

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

    //  {
    //    "recipient_type": "individual-or-group",
    //    "to": "whatsapp-id-or-group-id",
    //    "type": "image",
    //    "image": {
    //      "link": "http(s)://the-url",
    //      "provider": {
    //        "name": "provider-name"
    //      },
    //      "caption": "your-image-caption"
    //    }
    //  }

    CkJsonObject json = new CkJsonObject();
    json.UpdateString("recipient_type","individual-or-group");
    json.UpdateString("to","whatsapp-id-or-group-id");
    json.UpdateString("type","image");
    json.UpdateString("image.link","http(s)://the-url");
    json.UpdateString("image.provider.name","provider-name");
    json.UpdateString("image.caption","your-image-caption");

    //  Adds the "Authorization: Bearer your-auth-token" header.
    http.put_AuthToken("your-auth-token");

    CkHttpResponse resp = new CkHttpResponse();
    success = http.HttpJson("POST","https://example.com/v1/messages",json,"application/json",resp);
    if (success == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    CkStringBuilder sbResponseBody = new CkStringBuilder();
    resp.GetBodySb(sbResponseBody);
    CkJsonObject jResp = new CkJsonObject();
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    System.out.println("Response Body:");
    System.out.println(jResp.emit());

    int respStatusCode = resp.get_StatusCode();
    System.out.println("Response Status Code = " + respStatusCode);
    if (respStatusCode >= 400) {
        System.out.println("Response Header:");
        System.out.println(resp.header());
        System.out.println("Failed.");
        return;
        }

    //  Sample JSON response:
    //  (Sample code for parsing the JSON response is shown below)

    //  {
    //    "messages": [
    //      {
    //        "id": "gBEGkYiEB1VXAglK1ZEqA1YKPrU"
    //      }
    //    ]
    //  }

    //  Sample code for parsing the JSON response...
    //  Use the following online tool to generate parsing code from sample JSON:
    //  Generate Parsing Code from JSON

    String id;

    int i = 0;
    int count_i = jResp.SizeOfArray("messages");
    while (i < count_i) {
        jResp.put_I(i);
        id = jResp.stringOf("messages[i].id");
        i = i+1;
        }
  }
}