欢迎回来!现在你知道了如何从用户那里记录消息。但如何让机器人的消息更加用户友好和美观呢?答案是一一表情符号。我想你大概知道什么是表情符号，那么我们就继续深入吧。

创建新项目

打开InteliJldea，在src目录下创建文件 Main.java和 EmojiTestBot.java。这是我们文件的初步概览:

import org.telegram.telegrambots.ApiContextInitializer;
import org.telegram.telegrambots.TelegramBotsApi;
import org.telegram.telegrambots.exceptions.TelegramApiException;

public class Main {
    public static void main(String[] args) {
        // Initialize Api Context
        ApiContextInitializer.init();

        // Instantiate Telegram Bots API
        TelegramBotsApi botsApi = new TelegramBotsApi();

        // Register our bot
        try {
            botsApi.registerBot(new EmojiTestBot());
        } catch (TelegramApiException e) {
            e.printStackTrace();
        }
        System.out.println("EmojiTestBot successfully started!");
    }
}

import org.telegram.telegrambots.api.methods.send.SendMessage;
import org.telegram.telegrambots.api.objects.Update;
import org.telegram.telegrambots.bots.TelegramLongPollingBot;
import org.telegram.telegrambots.exceptions.TelegramApiException;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class EmojiTestBot extends TelegramLongPollingBot {
    @Override
    public void onUpdateReceived(Update update) {

        // We check if the update has a message and the message has text
        if (update.hasMessage() && update.getMessage().hasText()) {
            // Set variables
            String user_first_name = update.getMessage().getChat().getFirstName();
            String user_last_name = update.getMessage().getChat().getLastName();
            long user_id = update.getMessage().getChat().getId();
            String message_text = update.getMessage().getText();
            long chat_id = update.getMessage().getChatId();
            String answer = message_text;
            SendMessage message = new SendMessage() // Create a message object object
                    .setChatId(chat_id)
                    .setText(answer);
            log(user_first_name, user_last_name, Long.toString(user_id), message_text, answer);
            try {
                execute(message); // Sending our message object to user
            } catch (TelegramApiException e) {
                e.printStackTrace();
            }
        }
    }



    @Override
    public String getBotUsername() {
        // Return bot username
        // If bot username is @MyAmazingBot, it must return 'MyAmazingBot'
        return "EmojiTestBot";
    }

    @Override
    public String getBotToken() {
        // Return bot token from BotFather
        return "12345:qwertyuiopASDGFHKMK";
    }
    private void log(String first_name, String last_name, String user_id, String txt, String bot_answer) {
        System.out.println("\n ----------------------------");
        DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
        Date date = new Date();
        System.out.println(dateFormat.format(date));
        System.out.println("Message from " + first_name + " " + last_name + ". (id = " + user_id + ") \n Text - " + txt);
        System.out.println("Bot answer: \n Text - " + bot_answer);
    }
}

现在让我们安装表情符号库:

<dependency>
<groupId>com.vdurmont</groupId>
<artifactId>emoji-java</artifactId>
<version>3.1.3</version>
</dependency>

一旦库安装好，将其导入到你的机器人类中:

import com.vdurmont.emoji.EmojiParser;

现在你可以在EmojiPedia或Emoji cheat Sheet中查看表情符号列表。要插入表情符号，请执行以下操作:

String answer = EmojiParser.parseToUnicode("Here is a smile emoji: :smile:\n\n Here is alien emoji: :alien:");

这是 :smile: (微笑) 或 :alien: (外星人) 是表情符号的别名或简码。你也可以在EmojiPedia或Emoji Cheat sheet上查看它们。

全部代码

import org.telegram.telegrambots.ApiContextInitializer;
import org.telegram.telegrambots.TelegramBotsApi;
import org.telegram.telegrambots.exceptions.TelegramApiException;

public class Main {
    public static void main(String[] args) {
        // Initialize Api Context
        ApiContextInitializer.init();

        // Instantiate Telegram Bots API
        TelegramBotsApi botsApi = new TelegramBotsApi();

        // Register our bot
        try {
            botsApi.registerBot(new EmojiTestBot());
        } catch (TelegramApiException e) {
            e.printStackTrace();
        }
        System.out.println("EmojiTestBot successfully started!");
    }
}

import com.vdurmont.emoji.EmojiParser;
import org.telegram.telegrambots.api.methods.send.SendMessage;
import org.telegram.telegrambots.api.objects.Update;
import org.telegram.telegrambots.bots.TelegramLongPollingBot;
import org.telegram.telegrambots.exceptions.TelegramApiException;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class EmojiTestBot extends TelegramLongPollingBot {
    @Override
    public void onUpdateReceived(Update update) {

        // We check if the update has a message and the message has text
        if (update.hasMessage() && update.getMessage().hasText()) {
            // Set variables
            String user_first_name = update.getMessage().getChat().getFirstName();
            String user_last_name = update.getMessage().getChat().getLastName();
            long user_id = update.getMessage().getChat().getId();
            String message_text = update.getMessage().getText();
            long chat_id = update.getMessage().getChatId();
            String answer = EmojiParser.parseToUnicode("Here is a smile emoji: :smile:\n\n Here is alien emoji: :alien:");
            SendMessage message = new SendMessage() // Create a message object object
                    .setChatId(chat_id)
                    .setText(answer);
            log(user_first_name, user_last_name, Long.toString(user_id), message_text, answer);
            try {
                execute(message); // Sending our message object to user
            } catch (TelegramApiException e) {
                e.printStackTrace();
            }
        }
    }



    @Override
    public String getBotUsername() {
        // Return bot username
        // If bot username is @MyAmazingBot, it must return 'MyAmazingBot'
        return "EmojiTestBot";
    }

    @Override
    public String getBotToken() {
        // Return bot token from BotFather
        return "12345:qwertyuiopASDGFHKMK";
    }
    private void log(String first_name, String last_name, String user_id, String txt, String bot_answer) {
        System.out.println("\n ----------------------------");
        DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
        Date date = new Date();
        System.out.println(dateFormat.format(date));
        System.out.println("Message from " + first_name + " " + last_name + ". (id = " + user_id + ") \n Text - " + txt);
        System.out.println("Bot answer: \n Text - " + bot_answer);
    }
}