SendFileByUpload#

import requests

url = "{{MediaUrl}}/waInstance{{idInstance}}/sendFileByUpload/{{apiTokenInstance}}"

payload = {'chatId': '11001234567@c.us',
'caption': 'Описание'}
files = [
  ('file', ('window.jpg', open('C:/window.jpg','rb'),'image/jpeg'))
]
headers= {}

response = requests.request("POST", url, headers = headers, data = payload, files = files)

print(response.text.encode('utf8'))

curl --location '{{MediaUrl}}/waInstance{{idInstance}}/sendFileByUpload/{{apiTokenInstance}}' \
--form 'chatId="12345678910@c.us"' \
--form 'file=@"/Users/you/files/file.jpeg"' \
--form 'fileName="file.jpg"'

var restTemplate = new RestTemplate();
var requestUrl = new StringBuilder();
requestUrl
    .append("https://media.greenapi.com")
    .append("/waInstance").append({{idInstance}})
    .append("/sendFileByUpload/")
    .append({{apiTokenInstance}});

var headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);

var form = new LinkedMultiValueMap<>();
    form.add("chatId", "12345678910@c.us");
    form.add("file", new FileSystemResource(new File("/Users/you/files/file.jpeg")));
    form.add("fileName", file.jpg);
    form.add("caption", "Описание");
    form.add("quotedMessageId", "BAE5F4886F6F2D05");

var requestEntity = new HttpEntity<>(form, headers);

var response = restTemplate.exchange(requestUrl.toString(), HttpMethod.POST, requestEntity, String.class);
System.out.println(response);

var file = new File("/Users/user/Desktop/fileExample.jpeg");
var requestUrl = new StringBuilder();
requestUrl
    .append("https://media.greenapi.com")
    .append("/waInstance").append({{idInstance}})
    .append("/sendFileByUpload/")
    .append({{apiTokenInstance}});

var form = new HashMap<String, Object>();
    form.put("chatId", dto.getChatId());
    form.put("file", dto.getFile());
    form.put("fileName", dto.getFileName());
    form.put("caption", dto.getCaption());
    form.put("quotedMessageId", dto.getQuotedMessageId());

var response = Unirest.post(requestUrl.toString())
    .fields(form)
    .asString();

System.out.println(response);

program sendFileByUpload;

{$APPTYPE CONSOLE}

uses
  System.SysUtils,
  System.Classes, System.Net.HttpClient, System.Net.Mime, System.Net.URLClient, System.Net.HttpClientComponent;

var
  HttpClient: TNetHTTPClient;
  Response: IHTTPResponse;
  FormData: TMultipartFormData;
  EndpointURL, ID_INSTANCE, API_TOKEN_INSTANCE: string;

begin
  ID_INSTANCE := '110100001';
  API_TOKEN_INSTANCE := 'd75b3a66374942c5b3c019c698abc2067e151558acbd451234';

  EndpointURL := MEDIA_URL +'/waInstance' + ID_INSTANCE + '/sendFileByUpload/' + API_TOKEN_INSTANCE;

  HttpClient := TNetHTTPClient.Create(nil);

  FormData := TMultipartFormData.Create();
  FormData.AddField('chatId', '71234567890@c.us');
  FormData.AddField('caption', 'test');
  FormData.AddFile('file', 'C:\tmp\bp.png');

  try
    Response := HTTPClient.Post(EndpointURL, FormData, nil);

    if Response.StatusCode = 200 then
      Writeln('[Response]: ' + Response.ContentAsString)
    else
      Writeln('[ERROR ' + IntToStr(Response.StatusCode) + ']:' + Response.StatusText + '' + Response.ContentAsString);

    readln;
  except
    on E: Exception do
      Writeln(E.ClassName, ': ', E.Message);
  end;

  HttpClient.Free;
  FormData.Free;

end.