Discord机器人发送随机Embed报错求助（JS/Node.js）

我要做一个Discord机器人，触发指定命令（比如!embedzay）时发送随机Embed。目前已经搞定单条Embed发送和随机文本发送，但折腾随机Embed时踩了不少坑，遇到过[object Object]、无法发送空消息的错误，甚至搞崩过机器人。我是JavaScript新手，用JS和Node.js开发，下面是我的尝试过程和最终能用的代码：

可用代码示例 #

随机文本发送（!rtest命令） #

//rtest - random test +
if (command === 'rtest'){
    const options = [
        "message1",
        "message2",
        "message3",
    ]

    const random = options[Math.floor(Math.random() * options.length)]

    message.channel.send(`${random}`)
}

单条Embed发送（!embedz命令） #

//embed thingy - send and embed +
if (command === 'embedz'){
    
    message.channel.send({
        embeds: [new EmbedBuilder()
            .setTitle('Some title')
            .setImage('https://media.discordapp.net/attachments/1044759244861345862/1045783400193204335/ezgif.com-gif-maker_1.gif')],
    });
}

失败的随机Embed尝试及问题 #

尝试一：出现[object Object]错误 #

把Embed对象和普通字符串混在数组里，用模板字符串包裹发送时，对象被转成了默认的[object Object]字符串。

if (command === 'rtest'){
    const options = [
        {embeds: new EmbedBuilder().setTitle('rtfhgfh')},
        "message2",
        "message3",
    ]

    const random = options[Math.floor(Math.random() * options.length)]

    message.channel.send(`${random}`)
}

尝试二：出现「无法发送空消息」错误 #

直接把Embed对象传给send()方法，Discord.js要求发送Embed必须放在embeds数组参数里，单独传对象不符合API要求。

// earlier embed attempt - cannot send empty message
if (command === 'embedzay'){
    const embed3 = new EmbedBuilder()
    .setTitle('rtfhgfh')
    .setDescription('yhhfggf')

    const embed4 = new EmbedBuilder()
    .setTitle('haha')
    .setDescription('bunny')

    var embedArr = [embed3, embed4];
    let randomEmbed = embedArr[Math.floor(Math.random() * embedArr.length)];
    message.channel.send(randomEmbed);
}

尝试三：再次出现[object Object]错误 #

和尝试一同理，用模板字符串包裹Embed对象，导致对象被转成字符串输出。

if (command === 'embedzy'){

    const embed1 = new EmbedBuilder()
    .setTitle('Some title')
    .setImage('https://media.discordapp.net/attachments/1044759244861345862/1045783400193204335/ezgif.com-gif-maker_1.gif')

    const embed2 = new EmbedBuilder()
    .setTitle('Some titleuhhhhhh')
    .setImage('https://i.imgur.com/64l7KFc.png');

    const embeds = [embed1, embed2]

    const random = embeds[Math.floor(Math.random() * embeds.length)]

    message.channel.send(`${random}`)
}

尝试四：仅输出JSON字符串，无法显示Embed #

把Embed对象转成JSON字符串发送，Discord只会显示纯文本，不会解析成Embed组件。

if (command === 'embedzye'){

    const embed1 = new EmbedBuilder()
    .setTitle('Some title')
    .setImage('https://media.discordapp.net/attachments/1044759244861345862/1045783400193204335/ezgif.com-gif-maker_1.gif')

    const embed2 = new EmbedBuilder()
    .setTitle('Some titleuhhhhhh')
    .setImage('https://i.imgur.com/64l7KFc.png');

    const embeds = [embed1, embed2]

    const random = embeds[Math.floor(Math.random() * embeds.length)]

    message.channel.send(`${JSON.stringify(random)}`)
}

最终可行的随机Embed代码（!embedzyel命令） #

核心是把随机选中的Embed对象放在embeds数组里，作为send()方法的参数传递，符合Discord.js的API要求。

if (command === 'embedzyel'){

    const embed1 = new EmbedBuilder()
    .setTitle('Some title')
    .setImage('https://media.discordapp.net/attachments/1044759244861345862/1045783400193204335/ezgif.com-gif-maker_1.gif')

    const embed2 = new EmbedBuilder()
    .setTitle('Some titleuhhhhhh')
    .setImage('https://i.imgur.com/64l7KFc.png');

    const embeds = [embed1, embed2]

    const random = embeds[Math.floor(Math.random() * embeds.length)]

    message.channel.send({embeds: [random],});
}

内容的提问来源于stack exchange，提问作者user17777004