Question

我一直在尝试在 discord.js 中构建一个邮件机器人
这是到目前为止的代码
`

client.on('message', message=> {
  var input = message.toString().replace("+send ","").split(",");
  const mail = new Discord.MessageEmbed();
    mail.setColor('#ff0044')
    mail.setTitle(input[1])
    mail.setAuthor(message.author.username)
    mail.setDescription(input[2])
    mail.setThumbnail(message.author.avatarURL)
    mail.setFooter('Send messages with "+send id,subject,content"');
  client.users.cache.get(input[0]).send(mail);
});

`

发送命令时，它发送邮件但返回此错误

<块引用>

client.users.cache.get(input[0]).send(mail); TypeError: Cannot read property 'send' of undefined at Client.<anonymous> (/home/runner/VladMail/index.js:18:35) at Client.emit (events.js:315:20) at Client.EventEmitter.emit (domain.js:483:12) at MessageCreateAction.handle (/home/runner/VladMail/node_modules/discord.js/src/client/actions/MessageCreate.js:31:14) at Object.module.exports [as MESSAGE_CREATE] (/home/runner/VladMail/node_modules/discord.js/src/client/websocket/handlers/MESSAGE_CREATE.js:4:32) at WebSocketManager.handlePacket (/home/runner/VladMail/node_modules/discord.js/src/client/websocket/WebSocketManager.js:384:31) at WebSocketShard.onPacket (/home/runner/VladMail/node_modules/discord.js/src/client/websocket/WebSocketShard.js:444:22) at WebSocketShard.onMessage (/home/runner/VladMail/node_modules/discord.js/src/client/websocket/WebSocketShard.js:301:10) at WebSocket.onMessage (/home/runner/VladMail/node_modules/ws/lib/event-target.js:132:16)

为什么会返回此错误，我该如何解决？

Answer 1

看起来您的 client.users.cache.get(input[0]) 返回未定义。

当您尝试获取它时，请检查它返回的内容以确保它不是未定义的。

像这样：

let user = client.users.cache.get(input[0]);
console.log(user);
if(user){
  user.send(mail);
}

我无法使用 discord.js bot DM 用户

1 个答案: