Discord.js 机器人无法向特定频道发送消息

Posted 2023-03-14

【中文标题】Discord.js 机器人无法向特定频道发送消息

【英文标题】：Discord.js bot can't send message to specific channel

【发布时间】：2021-06-10 03:33:26

【问题描述】：

我正在尝试让我的机器人向 Discord 上的特定频道发送消息。但是，当我使用该命令时，它会导致错误：TypeError: Cannot read property 'cache' of undefined .

这是我的代码：

module.exports = 
    name: 'send',
    description: 'sends a message testing',
    execute(client) 
        const channel01 = client.channels.cache.find(channel => channel.id === "768667222527705148");
        channel01.send('Hi');
    ,
;

在我的 index.js 文件中，我的开头有以下内容，所以我认为 .channels 前面的客户端使用不是问题。

const fs = require('fs');
const Discord = require('discord.js');
const  prefix, token  = require('./config.json');

const client = new Discord.Client();
client.commands = new Discord.Collection();

这是我的 Index.js 文件。

const fs = require('fs');
const Discord = require('discord.js');
const  prefix, token  = require('./config.json');

const client = new Discord.Client();
client.commands = new Discord.Collection();

const commandFiles = fs.readdirSync('./commands').filter(file => file.endsWith('.js'));

for (const file of commandFiles) 
    const command = require(`./commands/$file`);
    client.commands.set(command.name, command);


const cooldowns = new Discord.Collection();

client.once('ready', () => 
    console.log('Ready!');
    client.user.setActivity("KevinYT", 
        type: "WATCHING",
        url: "https://www.youtube.com/channel/UCUr50quaTjBKWL1fLuWRvCg?view_as=subscriber"
      );
);

client.on('message', message => 

    if (!message.content.startsWith(prefix) || message.author.bot) return;

    const args = message.content.slice(prefix.length).trim().split(/ +/);
    const commandName = args.shift().toLowerCase();

    const command = client.commands.get(commandName)
        || client.commands.find(cmd => cmd.aliases && cmd.aliases.includes(commandName));

    if (!command) return;

    if (command.guildOnly && message.channel.type === 'dm') 
        return message.reply('I can\'t execute that command inside DMs!');
    

    if (command.args && !args.length) 
        let reply = `You didn't provide any arguments, $message.author!`;

        if (command.usage) 
            reply += `\nThe proper usage would be: \`$prefix$command.name $command.usage\``;
        

        return message.channel.send(reply);
    

    if (!cooldowns.has(command.name)) 
        cooldowns.set(command.name, new Discord.Collection());
    

    const now = Date.now();
    const timestamps = cooldowns.get(command.name);
    const cooldownAmount = (command.cooldown || 3) * 1000;

    if (timestamps.has(message.author.id)) 
        const expirationTime = timestamps.get(message.author.id) + cooldownAmount;

        if (now < expirationTime) 
            const timeLeft = (expirationTime - now) / 1000;
            return message.reply(`please wait $timeLeft.toFixed(1) more second(s) before reusing the \`$command.name\` command.`);
        
    

    timestamps.set(message.author.id, now);
    setTimeout(() => timestamps.delete(message.author.id), cooldownAmount);

    try 
        command.execute(message, args);
     catch (error) 
        console.error(error);
        message.reply('there was an error trying to execute that command!');
    
);

client.login(token);

我错过了什么？谢谢！

【问题讨论】：

我想您的client 不是客户端本身的实例。您可以发送获取此send 文件的命令处理程序吗？

我将 index.js 文件添加到最初的问题中。我相信命令处理程序从第 8 行或第 27 行开始。

就像 Arun Kumar Mohan 所说，您将 message 和 args 作为参数传递，但在此文件中您传递的是客户端。参数必须相同且顺序相同。

【参考方案1】：

command.execute(message, args)

您将execute 函数message（Message 对象）作为第一个参数传递，但您试图将其用作Client 对象。代码失败，因为 message.channels 是 undefined（混淆来自 execute 函数中使用的参数名称）。

您可以使用message.client 来访问Client 对象。

module.exports = 
  // ...
  execute (message) 
    const channel01 = message.client.channels.cache.find(
      (channel) => channel.id === '768667222527705148'
    )
    // ...
  ,