monsterdeveloper / java-telegram-bot-tutorial

Java Telegram Bot Tutorial. Feel free to submit issue if you found a mistake.

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• Note: this guide is not maintained. It's open for all contributions through GitHub.

Introduction

Hello everyone! While reading this book you will learn how to create Telegram Bots from start to finish. I assume you already know Java programming language.

All sources are available at GitHub repository.

Table of contents

• Lesson 1. Simple "echo" bot
• Lesson 2. PhotoBot
• Lesson 3. Logging
• Lesson 4. Emoji
• Lesson 5. Deploy your bot
• Lesson 6. Inline keyboards and editing message's text
• Lesson 7. Creating users database with MongoDB
• Lesson 8. Integrating with Redis

Credits

• Rubenlagus for his amazing library and support
• Clevero for his amazing HOWTO guide
• MasterGroosha for his amazing Python book

java-telegram-bot-tutorial's Issues

Problem executing execute(msg) on sendPhoto

Error:(65, 20) java: method execute in class org.telegram.telegrambots.bots.AbsSender cannot be applied to given types;
required: Method
found: org.telegram.telegrambots.api.methods.send.SendPhoto
reason: inferred type does not conform to upper bound(s)
inferred: org.telegram.telegrambots.api.methods.send.SendPhoto
upper bound(s): org.telegram.telegrambots.api.methods.BotApiMethod

This Tutorial is Outdated

As in July of 2023, this tutorial is outdated. Thus with the current version of TelegramBots API (Bot API v6.7) and RubenLagus library (6.7.0) user cannot just follow the tutorial.

I will try to fix it chapter by chapter.

if the internet connection is lost

Hello, good afternoon, a question.
How is it done to cancel the sending of a message since it takes me a long time to send it, or how do I get it if the internet connection is lost, retrieve the message and send it back?

Make book available somewhere else GitBook is not working

Make book available somewhere else GitBook is not working.

In gitbooks.io, the link to lesson 6 is broken

The link to lesson 6 on getbook.io works, but the link on getbooks.io doesn't work.

Link to Lesson 6 broken

Hello.
You have created very good tutorials.
Unfortunately the Link to Chapter 6 is broken.
https://monsterdeveloper.gitbooks.io/writing-telegram-bots-on-java/content/
https://monsterdeveloper.gitbook.io/java-telegram-bot-tutorial/

Telegram bot not my

Request to incorporate into library docs

@MonsterDeveloper it has been a long time since this work was done and I'd like to incorporate it into the Docs I'm building for the library, would you mind if I copy the work into the repository: https://github.com/rubenlagus/TelegramBotsDocumentation and update it to the latest versions of the library (obviously, would make a reference to the original creator)?

Question about Crawlers

Hi. sorry I ask my question in here. I emailed you to "[email protected]" but it seems your server is not working.
I want to know if we could write a crawler using telegram bots. And also could we join our bot to a public channel without any permission from the administrators like other real users in the telegram? (is invite link useable in this ?)

Thanks. Regards.

user, channel

How do I check subscribe to my channel from a user perspective?

problem running first lesson bot

I want to write my first bot for telegram.
I wrote the code as you said in lesson one but while i'm running this on my windows 10 laptop i get this get exception

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/collect/ImmutableList
	at com.google.inject.internal.Errors.<clinit>(Errors.java:709)
	at com.google.inject.internal.InternalInjectorCreator.<init>(InternalInjectorCreator.java:62)
	at com.google.inject.Guice.createInjector(Guice.java:96)
	at com.google.inject.Guice.createInjector(Guice.java:73)
	at com.google.inject.Guice.createInjector(Guice.java:62)
	at org.telegram.telegrambots.ApiContext.getInjector(ApiContext.java:46)
	at org.telegram.telegrambots.ApiContext.getInstance(ApiContext.java:25)
	at org.telegram.telegrambots.bots.TelegramLongPollingBot.<init>(TelegramLongPollingBot.java:31)
	at MyFirstBot.<init>(MyFirstBot.java:9)
	at Main.main(Main.java:14)
Caused by: java.lang.ClassNotFoundException: com.google.common.collect.ImmutableList
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 10 more

Process finished with exit code 1

Execute doesn't compile

Hi,

I've copy pasted the code into IntelliJ, and the only error is that execute(new_message) and execute(message) doesnt compile. It gives Error:(38, 21) java: cannot find symbol.