Let us create a simple echo bot
-
follow these steps to work with eclipse
-
got to org.telegram and edit
BuildVars.javaand fill it out
public static final Boolean debug = true;
public static final String pathToLogs = "./";
public static final String linkDB = "jdbc:mysql://[IP_OF_YOU_MYSQL_SERVER]:3306/[DATABASE]?useUnicode=true&characterEncoding=UTF-8";
public static final String controllerDB = "com.mysql.jdbc.Driver";
public static final String userDB = "[YOUR_DB_USERNAME]";
public static final String password = "[YOUR_SECRET_DB_PASSWORD]";
For our project those settings are enough.
[DATABASE]: your database. i.e. myProject
- next, go to org.telegram and edit
BotConfig.javaHere we must fill in our login credentials for our bot.
public static final String TOKENMYPROJECT = "[YOUR_TOP_SECRET_TOKEN]";
public static final String USERNAMEMYPROJECT = "myProjectBot";
[YOUR_TOP_SECRET_TOKEN]: your token you got from the BotFather
- go to org.telegram.updatehandlers and create a new class. This class is responsible for your bot actions. (in our case just return the text back). This class should extending
TelegramLongPollingBot.
It should look similiar like this:
package org.telegram.updateshandlers;
import org.telegram.telegrambots.api.objects.Update;
import org.telegram.telegrambots.bots.TelegramLongPollingBot;
public class MyProjectHandler extends TelegramLongPollingBot {
@Override
public String getBotUsername() {
// TODO Auto-generated method stub
return null;
}
@Override
public void onUpdateReceived(Update arg0) {
// TODO Auto-generated method stub
}
@Override
public String getBotToken() {
// TODO Auto-generated method stub
return null;
}
}
Then you can program your bot. First edit getBotToken() and getBotUsername(). Simply return your credentials mentioned in BotConfig. So for example return BotConfig.USERNAMEMYPROJECT;
The onUpdateReceived() method could look like this:
@Override
public void onUpdateReceived(Update update) {
//check if the update has a message
if(update.hasMessage()){
Message message = update.getMessage();
//check if the message has text. it could also contain for example a location ( message.hasLocation() )
if(message.hasText()){
//create a object that contains the information to send back the message
SendMessage sendMessageRequest = new SendMessage();
sendMessageRequest.setChatId(message.getChatId().toString()); //who should get the message? the sender from which we got the message...
sendMessageRequest.setText("you said: " + message.getText());
try {
sendMessage(sendMessageRequest); //at the end, so some magic and send the message ;)
} catch (TelegramApiException e) {
//do some error handling
}//end catch()
}//end if()
}//end if()
}//end onUpdateReceived()
- go to the
Main.javain org.telegram and register your updatehandler
public static void main(String[] args) {
TelegramBotsApi telegramBotsApi = new TelegramBotsApi();
try {
telegramBotsApi.registerBot(new MyProjectHandler());
} catch (TelegramApiException e) {
BotLogger.error(LOGTAG, e);
}//end catch()
}//end main()