Question

标题应该很快就使人明白。我正在弄清楚如何检查机器人获取的消息实际上是消息还是伪造的ID。

我已经尝试过

•if(!mmm)

•if(mmm.deleted !== true)

没用。

if (!args.length) return await message.channel.send(`You didn't provide a ID!`).then(msg => {msg.delete(30000)}).then(message.delete(50)).catch(error => console.log(error));
else
if (isNaN(args)) {
  return message.reply('that doesn\'t seem to be a valid number.').then(msg => {msg.delete(30000)}).then(message.delete(50)).catch(error => console.log(error));
}
else message.channel.send(`Fetching: ${args}`).then(msg => {msg.delete(30000)}).then(message.delete(50)).catch(error => console.log(error));

message.channel.fetchMessage(args).then(async (mmm) => {

console.log(mmm)

if(mmm) return await message.reply(`it appears that the ID you sent was invalid.`).then(msg => {msg.delete(30000)}).then(message.delete(50)).catch(error => console.log(error));
else

await mmm.channel.send(`hi`)
/**
 * @ending for .then((mmm) => {`code`})
 */

await message.channel.send('<:Approve:596458828011405334> Finished processes.').then(msg => {msg.delete(5000)}).then(message.delete(50)).catch(error => console.log(error))
}).catch(async (error) => {console.log(error)

预期结果

•Bot可以判断收到的消息是否是在频道中发送的实际消息

实际结果

•Bot继续将消息发送到不存在的消息，甚至不存在；控制台错误。

Answer 1

如果您尝试获取不存在的消息，则会引发以下错误

DiscordAPIError: Unknown Message

您可以通过链接到catch的{{1}}来捕获它：

fetchMessage

您还可以在message.channel.fetchMessage('invalid id') .then(d => console.log('no err', d)) .catch(d => { console.log('err', d); // do what you want ); try置于“上方”的位置捕获错误。

因此，与其尝试在那时检查消息是否正确，不如仅在发送消息时执行应做的事情，然后在catch中发送警告/错误消息：

catch

应该这样做，但是您不会在每个catch / then / if分支内返回值，这意味着存在一些未定义的返回值。如果要中止执行的其余部分，只需message.channel.fetchMessage(args).then(async (mmm) => { console.log(mmm); await mmm.channel.send(`hi`); /** * @ending for .then((mmm) => {`code`}) */ await message.channel.send('<:Approve:596458828011405334> Finished processes.') .then(msg => {msg.delete(5000);}) .then(message.delete(50)) .catch(error => console.log(error)); }).catch(async (error) => { console.log('err', error); return await message.reply(`it appears that the ID you sent was invalid.`) .then(msg => msg.delete(30000)) .then(message.delete(50)) .catch(error => console.log(error)); });或将代码放入return;分支中，而无需其他代码，之后再编写代码。

我也建议您将链接放在新闻行上以使其清晰

如何检查.fetchMessage是否收到实际消息

1 个答案: