不查找目录时未找到目录

Question

我正在尝试从如下所示的数组中显示随机图像：

[
    {
        "name": "weedle",
        "image": "https://c0.klipartz.com/pngpicture/478/959/sticker-png-pokemon-red-and-blue-pokemon-x-and-y-weedle-beedrill-others-tail-pokemon-evolution-pokemon-red-and-blue-pokemon-x-and-y.png"
    },
    {
        "name": "caterpie",
        "image": "https://img.favpng.com/2/19/21/pok-mon-diamond-and-pearl-pok-mon-sun-and-moon-pok-mon-tcg-online-caterpie-png-favpng-znPm71z43VHMdHAMhCqitLD5w_t.jpg"
    }
]

这是应该随机存储其中一个的行。我什至不确定我想要做的事情是否可行：

const pokemon = require('./pokemon.json');
const pokemonImage = new Discord.MessageAttachment(pokemon[0].image[Math.floor(Math.random() * pokemon.length)]);

在尝试此操作并尝试发送消息时，我收到此错误：

(node:8880) UnhandledPromiseRejectionWarning: Error: ENOENT: no such file or directory, stat 'C:\Users\xaguy\Desktop\PokeCord (My Version)\DiscordBot\h'

我不知道为什么它在我不搜索目录“h”时尝试搜索它。

如果我删除“pokemon[0].image”中的“image”，我会收到以下错误：

(node:1520) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'path' of undefined
    at findName (C:\Users\xaguy\Desktop\PokeCord (My Version)\DiscordBot\node_modules\discord.js\src\structures\APIMessage.js:290:17)
    at Function.resolveFile (C:\Users\xaguy\Desktop\PokeCord (My Version)\DiscordBot\node_modules\discord.js\src\structures\APIMessage.js:306:31)
    at C:\Users\xaguy\Desktop\PokeCord (My Version)\DiscordBot\node_modules\discord.js\src\structures\APIMessage.js:241:72
    at Array.map (<anonymous>)
    at APIMessage.resolveFiles (C:\Users\xaguy\Desktop\PokeCord (My Version)\DiscordBot\node_modules\discord.js\src\structures\APIMessage.js:241:46)
    at TextChannel.send (C:\Users\xaguy\Desktop\PokeCord (My Version)\DiscordBot\node_modules\discord.js\src\structures\interfaces\TextBasedChannel.js:172:46)
    at Client.<anonymous> (C:\Users\xaguy\Desktop\PokeCord (My Version)\DiscordBot\index.js:33:50)
    at Client.emit (events.js:315:20)
    at MessageCreateAction.handle (C:\Users\xaguy\Desktop\PokeCord (My Version)\DiscordBot\node_modules\discord.js\src\client\actions\MessageCreate.js:31:14)
    at Object.module.exports [as MESSAGE_CREATE] (C:\Users\xaguy\Desktop\PokeCord (My Version)\DiscordBot\node_modules\discord.js\src\client\websocket\handlers\MESSAGE_CREATE.js:4:32)

Answer 1

让我们深入了解这里发生了什么：

const pokemonImage = new Discord.MessageAttachment(pokemon[0].image[Math.floor(Math.random() * pokemon.length)]);

你从pokemon中的这个数组开始：

[
    {
        "name": "weedle",
        "image": "https://c0.klipartz.com/pngpicture/478/959/sticker-png-pokemon-red-and-blue-pokemon-x-and-y-weedle-beedrill-others-tail-pokemon-evolution-pokemon-red-and-blue-pokemon-x-and-y.png"
    },
    {
        "name": "caterpie",
        "image": "https://img.favpng.com/2/19/21/pok-mon-diamond-and-pearl-pok-mon-sun-and-moon-pok-mon-tcg-online-caterpie-png-favpng-znPm71z43VHMdHAMhCqitLD5w_t.jpg"
    }
]

你通过pokemon[0]获得第一个元素：

{
        "name": "weedle",
        "image": "https://c0.klipartz.com/pngpicture/478/959/sticker-png-pokemon-red-and-blue-pokemon-x-and-y-weedle-beedrill-others-tail-pokemon-evolution-pokemon-red-and-blue-pokemon-x-and-y.png"
    }

然后是image 属性：

"https://c0.klipartz.com/pngpicture/478/959/sticker-png-pokemon-red-and-blue-pokemon-x-and-y-weedle-beedrill-others-tail-pokemon-evolution-pokemon-red-and-blue-pokemon-x-and-y.png"

然后您使用[Math.floor(Math.random() * pokemon.length)] 来获取该字符串中随机索引处的字符，根据口袋妖怪数组的长度严重偏向前面。在发布的错误中，该随机字符是h。 discord 库尝试将h 解析为相对于工作目录的文件，当然失败了。

我想你想随机选择一个口袋妖怪然后获取图像，这更像是这样。

const pokemonImage = new Discord.MessageAttachment(pokemon[Math.floor(Math.random() * pokemon.length)].image)