Odeslat soubor prostřednictvím chatu s jazykem Java

String afilnet_class="chat";
String afilnet_method="sendfile";
String afilnet_user="user";
String afilnet_password="password";
String afilnet_platform="whatsapp";
String afilnet_platformid="100";
String afilnet_destination="3460000000";
String afilnet_type="image";
String afilnet_fileurl="https://www.example.com/image.jpg";
String afilnet_thumburl="https://www.example.com/thumb.jpg";
String afilnet_message="test+message";

// Create the POST request
String post = "class="+afilnet_class+"&method="+afilnet_method+"&user="+afilnet_user+"&password="+afilnet_password+"&platform="+afilnet_platform+"&platformid="+afilnet_platformid+"&destination="+afilnet_destination+"&type="+afilnet_type+"&fileurl="+afilnet_fileurl+"&thumburl="+afilnet_thumburl+"&message="+afilnet_message;
	  
// We generate the URL
URL myurl = new URL("https://www.afilnet.com/api/http/");

// We create the connection
HttpURLConnection con = (HttpURLConnection) myurl.openConnection();
con.setDoOutput(true);
con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
con.setRequestProperty("Content-Length", String.valueOf(post.length()));
con.setRequestMethod("POST");

// We build the 
OutputStream os = con.getOutputStream();
os.write(post.getBytes());
os.close();	 

StringBuilder sb = new StringBuilder();  
int HttpResult = con.getResponseCode();
if(HttpResult == HttpURLConnection.HTTP_OK)
{
	BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(),"utf-8"));  

	String line = null;
	while ((line = br.readLine()) != null) {  
		sb.append(line + "\n");  
	}

	br.close(); 
	System.out.println(""+sb.toString());  

} else { 
	System.out.println(con.getResponseCode());
	System.out.println(con.getResponseMessage());  
}

String afilnet_class="chat";
String afilnet_method="sendfile";
String afilnet_user="user";
String afilnet_password="password";
String afilnet_platform="whatsapp";
String afilnet_platformid="100";
String afilnet_destination="3460000000";
String afilnet_type="image";
String afilnet_fileurl="https://www.example.com/image.jpg";
String afilnet_thumburl="https://www.example.com/thumb.jpg";
String afilnet_message="test+message";

// Create the POST request
String post = "class="+afilnet_class+"&method="+afilnet_method+"&platform="+afilnet_platform+"&platformid="+afilnet_platformid+"&destination="+afilnet_destination+"&type="+afilnet_type+"&fileurl="+afilnet_fileurl+"&thumburl="+afilnet_thumburl+"&message="+afilnet_message;
	  
// We generate the URL
URL myurl = new URL("https://www.afilnet.com/api/basic/");

// We create the connection
HttpURLConnection con = (HttpURLConnection) myurl.openConnection();
String encoded = Base64.getEncoder().encodeToString((afilnet_user+":"+afilnet_password).getBytes(StandardCharsets.UTF_8));
con.setRequestProperty("Authorization", "Basic "+encoded);
con.setDoOutput(true);
con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
con.setRequestProperty("Content-Length", String.valueOf(post.length()));
con.setRequestMethod("POST");

// We build the 
OutputStream os = con.getOutputStream();
os.write(post.getBytes());
os.close();	 

StringBuilder sb = new StringBuilder();  
int HttpResult = con.getResponseCode();
if(HttpResult == HttpURLConnection.HTTP_OK)
{
	BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(),"utf-8"));  

	String line = null;
	while ((line = br.readLine()) != null) {  
		sb.append(line + "\n");  
	}

	br.close(); 
	System.out.println(""+sb.toString());  

} else { 
	System.out.println(con.getResponseCode());
	System.out.println(con.getResponseMessage());  
}