Discord Bot 多次响应事件

Question

问题是当歌曲被添加到队列中时，机器人会多次响应。第一次运行命令时，它只响应一次，当该事件第二次发生时，它会响应两次。

示例： *玩加比博混搭 播放：Gabibbo 混搭-00:26。 第二次： *play Gabibbo Mashup 播放：Gabibbo 混搭 - 00:26 播放：Gabibbo Mashup - 00:26)

代码：

const Discord = require('discord.js');
const client = new Discord.Client();
const keepAlive = require('./server.js');
const distube = new DisTube(client, { searchSongs: false, emitNewSongOnly: true })

const prefix = "*"
client.on("ready", () => {
    console.log('I am ready')
});

client.on("message", async (message) => {
    if (message.author.bot) return;
    if (!message.content.startsWith(prefix)) return;
    const args = message.content.slice(prefix.length).trim().split(/ +/g);
    const command = args.shift();

    // Queue status template
    const status = (queue) => `Volume: \`${queue.volume}%\` | Filter: \`${queue.filter || "Off"}\` | Loop: \`${queue.repeatMode ? queue.repeatMode == 2 ? "All Queue" : "This Song" : "Off"}\` | Autoplay: \`${queue.autoplay ? "On" : "Off"}\``;

    // DisTube event listeners, more in the documentation page
    distube
        .on("playSong", (message, queue, song) => message.channel.send(
            `Playing: **${song.name}** - **${song.formattedDuration}**`))
            
        .on("addSong", (message, queue, song) => message.channel.send(
            `Added **${song.name}** - **${song.formattedDuration}** to the queue by ${song.user}`,
            
        ))
        .on("playList", (message, queue, playlist, song) => message.channel.send(
            `Play **${playlist.name}** playlist (${playlist.songs.length} songs).\nRequested by: ${song.user}\nNow playing **${song.name}** - **${song.formattedDuration}**\n${status(queue)}`
        ))
        
        .on("addList", (message, queue, playlist) => message.channel.send(
            `Added **${playlist.name}** playlist (${playlist.songs.length} songs) to queue\n${status(queue)}`
           
        ))
        
        // DisTubeOptions.searchSongs = true
        .on("searchResult", (message, result) => {
            let i = 0;
            message.channel.send(`**Choose an option from below**\n${result.map(song => `**${++i}**. ${song.name} - \`${song.formattedDuration}\``).join("\n")}\n*Enter anything else or wait 60 seconds to cancel*`);
            
        })
        // DisTubeOptions.searchSongs = true
        .on("searchCancel", (message) => message.channel.send(`Searching canceled`))
        .on("error", (message, e) => {
            console.error(e)
            message.channel.send("An error encountered: " + e);
        });
        if (["p", "play"].includes(command)){
            if (!args[0]) return message.channel.send('You must state something to play');
            if (!message.member.voice.channel) return message.channel.send('You must be in a voice channel to play music');
            distube.play(message, args.join(" "));
        }
        if (command == 'stop') {
            const bot = message.guild.members.cache.get(client.user.id);
            if (!message.member.voice.channel) return message.channel.send('You must be in a voice channel to stop music');
            if (bot.voice.channel !== message.member.voice.channel) message.channel.send('You must be in the same voice channel as me.');
            distube.stop(message, args.join(" "));
            message.channel.send('I have stopped that song for you')
        }

        if  (["s", "skip"].includes(command)){
            distube.skip(message);
            message.channel.send('I have skipped that song')
        } 
        if (command == 'queque') {
            let queue = distube.getQueue(message);
        message.channel.send('Current queue:\n' + queue.songs.map((song, id) =>
            `**${id + 1}**. **${song.name}** - **${song.formattedDuration}**`
        ).slice(0, 10).join("\n"));
       
        }
         if (["repeat", "loop"].includes(command)) {
        distube.setRepeatMode(message, parseInt(args[0]))
        message.channel.send(`${song.name} is looped`)
        }
        if ([`3d`, `bassboost`, `echo`, `karaoke`, `nightcore`, `vaporwave`].includes(command)) {
            let filter = distube.setFilter(message, command);
            message.channel.send("Current queue filter: " + (filter || "Off"));
        }
});

keepAlive();
client.login(process.env.TOKEN);

Answer 1

每次收到消息时，都会添加更多事件侦听器：

client.on("message", async (message) => {
    // other stuff
    distube.on("playSong", (message, queue, song) => message.channel.send(
        `Playing: **${song.name}** - **${song.formattedDuration}**`
    ));
});

需要改为

client.on("message", async (message) => {
    // other stuff
});
distube.on("playSong", (message, queue, song) => message.channel.send(
    `Playing: **${song.name}** - **${song.formattedDuration}**`
));

const Discord = require('discord.js');
const client = new Discord.Client();
const keepAlive = require('./server.js');
const distube = new DisTube(client, { searchSongs: false, emitNewSongOnly: true })

const prefix = "*"
client.on("ready", () => {
    console.log('I am ready')
});

client.on("message", async (message) => {
    if (message.author.bot) return;
    if (!message.content.startsWith(prefix)) return;
    const args = message.content.slice(prefix.length).trim().split(/ +/g);
    const command = args.shift();

    // Queue status template
    const status = (queue) => `Volume: \`${queue.volume}%\` | Filter: \`${queue.filter || "Off"}\` | Loop: \`${queue.repeatMode ? queue.repeatMode == 2 ? "All Queue" : "This Song" : "Off"}\` | Autoplay: \`${queue.autoplay ? "On" : "Off"}\``;
    if (["p", "play"].includes(command)){
        if (!args[0]) return message.channel.send('You must state something to play');
        if (!message.member.voice.channel) return message.channel.send('You must be in a voice channel to play music');
        distube.play(message, args.join(" "));
    }
    if (command == 'stop') {
        const bot = message.guild.members.cache.get(client.user.id);
        if (!message.member.voice.channel) return message.channel.send('You must be in a voice channel to stop music');
        if (bot.voice.channel !== message.member.voice.channel) message.channel.send('You must be in the same voice channel as me.');
        distube.stop(message, args.join(" "));
        message.channel.send('I have stopped that song for you')
    }

    if  (["s", "skip"].includes(command)){
        distube.skip(message);
        message.channel.send('I have skipped that song')
    } 
    if (command == 'queque') {
        let queue = distube.getQueue(message);
    message.channel.send('Current queue:\n' + queue.songs.map((song, id) =>
        `**${id + 1}**. **${song.name}** - **${song.formattedDuration}**`
    ).slice(0, 10).join("\n"));

    }
     if (["repeat", "loop"].includes(command)) {
    distube.setRepeatMode(message, parseInt(args[0]))
    message.channel.send(`${song.name} is looped`)
    }
    if ([`3d`, `bassboost`, `echo`, `karaoke`, `nightcore`, `vaporwave`].includes(command)) {
        let filter = distube.setFilter(message, command);
        message.channel.send("Current queue filter: " + (filter || "Off"));
    }
});

// DisTube event listeners, more in the documentation page
distube
    .on("playSong", (message, queue, song) => message.channel.send(
        `Playing: **${song.name}** - **${song.formattedDuration}**`))

    .on("addSong", (message, queue, song) => message.channel.send(
        `Added **${song.name}** - **${song.formattedDuration}** to the queue by ${song.user}`,

    ))
    .on("playList", (message, queue, playlist, song) => message.channel.send(
        `Play **${playlist.name}** playlist (${playlist.songs.length} songs).\nRequested by: ${song.user}\nNow playing **${song.name}** - **${song.formattedDuration}**\n${status(queue)}`
    ))

    .on("addList", (message, queue, playlist) => message.channel.send(
        `Added **${playlist.name}** playlist (${playlist.songs.length} songs) to queue\n${status(queue)}`

    ))

    // DisTubeOptions.searchSongs = true
    .on("searchResult", (message, result) => {
        let i = 0;
        message.channel.send(`**Choose an option from below**\n${result.map(song => `**${++i}**. ${song.name} - \`${song.formattedDuration}\``).join("\n")}\n*Enter anything else or wait 60 seconds to cancel*`);

    })
    // DisTubeOptions.searchSongs = true
    .on("searchCancel", (message) => message.channel.send(`Searching canceled`))
    .on("error", (message, e) => {
        console.error(e)
        message.channel.send("An error encountered: " + e);
    });
keepAlive();
client.login(process.env.TOKEN);