SendFileByUpload#

import requests

url = "{{mediaUrl}}/v3/waInstance{{idInstance}}/sendFileByUpload/{{apiTokenInstance}}"

payload = {'chatId': '10000000',
'caption': 'Описание'}
files = [
  ('file', ('window.jpg', open('C:/window.jpg','rb'),'image/jpeg'))
]
headers= {}

response = requests.post(url, data=payload, files=files)

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

curl --location '{{mediaUrl}}/v3/waInstance{{idInstance}}/sendFileByUpload/{{apiTokenInstance}}' \
--form 'chatId="10000000"' \
--form 'file=@"/Users/you/files/file.jpeg"' \
--form 'fileName="file.jpg"'

var restTemplate = new RestTemplate();
var requestUrl = new StringBuilder();
requestUrl
    .append({{mediaUrl}})
    .append("/v3/waInstance").append({{idInstance}})
    .append("/sendFileByUpload/")
    .append({{apiTokenInstance}});

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

var form = new LinkedMultiValueMap<>();
    form.add("chatId", "10000000");
    form.add("file", new FileSystemResource(new File("/Users/you/files/file.jpeg")));
    form.add("fileName", file.jpg);
    form.add("caption", "Описание");

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({{mediaUrl}})
    .append("/v3/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());

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

System.out.println(response);