sendMusic

Introduction

In this lesson, we will learn how to send tracks located in a local directory.

If you didn't open the Lesson 1, don't forget to make a Bot class with a token and name of the bot, as well as connect libraries.

Process

The main function remains unchanged, so just copy it in previous lessons

Let's look at the HandlerToLessonFour class

We still need to Override onUpdateReceived method

Let's take onUpdateReceived method from the last lesson and just change the name of the command

We should get something like this:

public class HandleToLessonFour extends TelegramLongPollingBot {

    @Override
    public String getBotUsername() {
        return Bot.USERNAME;
    }

    @Override
    public String getBotToken() {
        return Bot.TOKEN;
    }

    @Override
    public void onUpdateReceived(Update update) {
        if (update.hasMessage() && update.getMessage().hasText()) {
            // Initialization received message
            String message_text = update.getMessage().getText();
            // Initialization sendMessage
            SendMessage message = new SendMessage();
            // In advance set chat id to sendMessage
            message.setChatId(update.getMessage().getChatId().toString());
            switch (message_text) {
                case "/start" -> message.setText("All is working");
                case "want a song" -> {
                    try {
                        sendMusic(update, "test.mp3", message);
                    } catch (FileNotFoundException | TelegramApiException e) {
                        e.printStackTrace();
                    }
                }
            }
        }

    }
}

It remains only to write the method of sending the music itself from the local directory

Don't forget to set chat id when we're sending something

public class HandleToLessonFour extends TelegramLongPollingBot {

    // Previous methods

    private void sendMusic(Update update, String fileName, SendMessage sendMessage) throws FileNotFoundException, TelegramApiException {
        // Initialization sendAudio
        SendAudio sendAudio = new SendAudio();
        // In advance set chat id to sendMessage
        sendMessage.setChatId(String.valueOf(update.getMessage().getChatId()));
        // Set text to sendMessage
        sendMessage.setText("nice track!");
        // Set chat id to sendAudio
        sendAudio.setChatId(String.valueOf(update.getMessage().getChatId()));
        // Set file to sendAudio
        sendAudio.setAudio(new InputFile(ResourceUtils.getFile(fileName)));
        // Set a title of the track
        sendAudio.setTitle("name of the track");
        // Set a performer of the track
        sendAudio.setPerformer("performer of the track");
        execute(sendAudio);
    }
}

You can find all the code here

As a result, we get a bot that, when entering a command, sends tracks from the local directory

Show Work

Back to Lesson 3 of sending photos from the local directory Go to Lesson 5 of saving files to the local directory