Cómo enviar una API de WhatsApp con Java

Introducción

En este tutorial, crearemos ejemplos simples para enviar mensajes a través de la API de WhatsApp usando Java.

Inicialmente, debe asegurarse de que el okhttp3 la biblioteca está lista Porque usaremos esta biblioteca en este artículo para enviar mensajes a Ultramsg Gateway.

Primer mensaje de la API de WhatsApp usando Java

package com.mycompany.mavenproject1;
import java.io.IOException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;

/**
 *
 * @author Ultramsg team
 */
public class newJavaFile {

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) throws IOException {
  //////////////////////////////////////
OkHttpClient client = new OkHttpClient();
MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "token=JATafg4422g0K54&to=14155552671&body=WhatsApp API on UltraMsg.com works good&priority=10&referenceId=");
Request request = new Request.Builder()
  .url("https://api.ultramsg.com/instance19/messages/chat")
  .post(body)
  .addHeader("content-type", "application/x-www-form-urlencoded")
  .build();
Response response = client.newCall(request).execute();
//////////////////////////////////////
     System.out.println("===================");
     System.out.println(response.body().string());
    }
}

Cuando se ejecuta el código anterior, y si el mensaje se envía con éxito, la respuesta será así:

{"sent":"true","message":"ok","id":43007}

Enviar imagen

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "token=JATafg4422g0K54&to=14155552671&image=https://file-example.s3-accelerate.amazonaws.com/images/test.jpg&caption=image Caption&referenceId=");
Request request = new Request.Builder()
  .url("https://api.ultramsg.com/instance19/messages/image")
  .post(body)
  .addHeader("content-type", "application/x-www-form-urlencoded")
  .build();

Response response = client.newCall(request).execute();

Enviar documento

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "token=JATafg4422g0K54&to=14155552671&filename=hello.pdf&document=https://file-example.s3-accelerate.amazonaws.com/documents/cv.pdf&referenceId=");
Request request = new Request.Builder()
  .url("https://api.ultramsg.com/instance19/messages/document")
  .post(body)
  .addHeader("content-type", "application/x-www-form-urlencoded")
  .build();

Response response = client.newCall(request).execute();

Enviar sonido

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "token=JATafg4422g0K54&to=14155552671&audio=https://file-example.s3-accelerate.amazonaws.com/audio/2.mp3&referenceId=");
Request request = new Request.Builder()
  .url("https://api.ultramsg.com/instance19/messages/audio")
  .post(body)
  .addHeader("content-type", "application/x-www-form-urlencoded")
  .build();

Response response = client.newCall(request).execute();

Enviar voz

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "token=JATafg4422g0K54&to=14155552671&audio=https://file-example.s3-accelerate.amazonaws.com/voice/oog_example.ogg&referenceId=");
Request request = new Request.Builder()
  .url("https://api.ultramsg.com/instance19/messages/voice")
  .post(body)
  .addHeader("content-type", "application/x-www-form-urlencoded")
  .build();

Response response = client.newCall(request).execute();

Enviar vídeo

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "token=JATafg4422g0K54&to=14155552671&video=https://file-example.s3-accelerate.amazonaws.com/video/test.mp4&referenceId=");
Request request = new Request.Builder()
  .url("https://api.ultramsg.com/instance19/messages/video")
  .post(body)
  .addHeader("content-type", "application/x-www-form-urlencoded")
  .build();

Response response = client.newCall(request).execute();

Enviar enlace

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "token=JATafg4422g0K54&to=14155552671&link=https://en.wikipedia.org/wiki/COVID-19&referenceId=");
Request request = new Request.Builder()
  .url("https://api.ultramsg.com/instance19/messages/link")
  .post(body)
  .addHeader("content-type", "application/x-www-form-urlencoded")
  .build();

Response response = client.newCall(request).execute();

Enviar contacto

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "token=JATafg4422g0K54&to=14155552671&[email protected]&referenceId=");
Request request = new Request.Builder()
  .url("https://api.ultramsg.com/instance19/messages/contact")
  .post(body)
  .addHeader("content-type", "application/x-www-form-urlencoded")
  .build();

Response response = client.newCall(request).execute();

Enviar ubicación

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "token=JATafg4422g0K54&to=14155552671&address=ABC company \n Sixth floor , office 38&lat=25.197197&lng=55.2721877&referenceId=");
Request request = new Request.Builder()
  .url("https://api.ultramsg.com/instance19/messages/location")
  .post(body)
  .addHeader("content-type", "application/x-www-form-urlencoded")
  .build();

Response response = client.newCall(request).execute();

Enviar tarjeta virtual

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "token=JATafg4422g0K54&to=14155552671&vcard= BEGIN:VCARD\nVERSION:3.0\nN:lastname;firstname\nFN:firstname lastname\nTEL;TYPE=CELL;waid=14000000001:14000000002\nNICKNAME:nickname\nBDAY:01.01.1987\nX-GENDER:M\nNOTE:note\nADR;TYPE=home:;;;;;;\nADR;TYPE=work_:;;;;;;\nEND:VCARD&referenceId=");
Request request = new Request.Builder()
  .url("https://api.ultramsg.com/instance19/messages/vcard")
  .post(body)
  .addHeader("content-type", "application/x-www-form-urlencoded")
  .build();

Response response = client.newCall(request).execute();

finalmente, puede ver la documentación completa de la API de Whatsapp y las preguntas frecuentes .