有没有什么方法可以使用 discord.js 在 discord 上获取用户横幅？用户横幅是新功能，所以我不确定到目前为止是否有任何方法。我在文档中没有找到任何东西。例如。服务器横幅可用：
https://cdn.discordapp.com/banners/GUILD_ID/GUILD_BANNER.png.
类似于用户横幅的东西会很棒。
【问题讨论】：
标签： javascript discord discord.js
经过几个小时的开发，我设法恢复了一个不和谐的横幅，代码如下：
(你需要安装"node-fetch" => npm i node-fetch)
const fetch = require('node-fetch')
let uid = "user_id"
let response = fetch(`https://discord.com/api/v8/users/${uid}`, {
method: 'GET',
headers: {
Authorization: `Bot ${client.token}`
}
})
let receive = ''
let banner = 'https://cdn.discordapp.com/attachments/829722741288337428/834016013678673950/banner_invisible.gif' // invisible image ( you can change the link if you want )
response.then(a => {
if(a.status !== 404) {
a.json().then(data => {
receive = data['banner']
if(receive !== null) {
let format = 'png'
if(receive.substring(0,2) === 'a_') {
format = 'gif'
}
banner = `https://cdn.discordapp.com/banners/${uid}/${receive}.${format}`
}})
.setTimeout(() => {
// To retrieve the value "banner" we put a timeout otherwise it will return us the first definition of "banner" that is to say the invisible image, I let you modify the code as you wish, good evening to you (and also I just wanted to make it clear I'm French)
// Put the rest of your code here :
}, 1000)
【讨论】：
我想出的discord.js v12最简单的解决方案：
async function getUserBannerUrl(userId) {
const user = await client.api.users(userId).get();
return user.banner ? `https://cdn.discordapp.com/banners/${userId}/${user.banner}?size=512` : null;
}
但是，这不能很好地处理 mime 类型。除非您阅读 content-type 标头，否则您不知道 mime 类型是什么。这可能会破坏一些要求您在 URL 中具有文件扩展名的内容。这就是为什么我想出了更复杂的解决方案。
下面的代码依赖于axios。
const axios = require("axios");
async function getUserBannerUrl(userId, { dynamicFormat = true, defaultFormat = "webp", size = 512 } = {}) {
// Supported image sizes, inspired by 'https://discord.js.org/#/docs/main/stable/typedef/ImageURLOptions'.
if (![16, 32, 64, 128, 256, 512, 1024, 2048, 4096].includes(size)) {
throw new Error(`The size '${size}' is not supported!`);
}
// We don't support gif as a default format,
// because requesting .gif format when the original image is not a gif,
// would result in an error 415 Unsupported Media Type.
// If you want gif support, enable dynamicFormat, .gif will be used when is it available.
if (!["webp", "png", "jpg", "jpeg"].includes(defaultFormat)) {
throw new Error(`The format '${defaultFormat}' is not supported as a default format!`);
}
// We use raw API request to get the User object from Discord API,
// since the discord.js v12's one doens't support .banner property.
const user = await client.api.users(userId).get();
if (!user.banner) return null;
const query = `?size=${size}`;
const baseUrl = `https://cdn.discordapp.com/banners/${userId}/${user.banner}`;
// If dynamic format is enabled we perform a HTTP HEAD request,
// so we can use the content-type header to determine,
// if the image is a gif or not.
if (dynamicFormat) {
const { headers } = await axios.head(baseUrl);
if (headers && headers.hasOwnProperty("content-type")) {
return baseUrl + (headers["content-type"] == "image/gif" ? ".gif" : `.${defaultFormat}`) + query;
}
}
return baseUrl + `.${defaultFormat}` + query;
}
实现简单的!banner 命令，将显示消息发送者的横幅。
client.on("message", async (message) => {
if (message.author.bot) return;
if (message.content == "!banner") {
const bannerUrl = await getUserBannerUrl(message.author.id, { size: 4096 });
if (bannerUrl) {
const embed = new Discord.MessageEmbed()
.setTitle(`${message.author.username}'s banner`)
.setDescription("Look at my banner, how cool is that?")
.setImage(bannerUrl);
message.channel.send(embed);
} else {
message.channel.send("You don't have money to buy Discord Nitro... How sad...");
}
}
});
【讨论】：
您可以使用discord-banner npm 包获取不和谐用户横幅
它使用起来非常简单，现在无需 Discord.js v13 即可获得它
【讨论】：
根据对this GitHub issue 和the official documentation 的回复，目前没有读取用户简介和横幅的方法。
正如 Tyler 所说，该功能仍处于测试阶段。添加后，您应该能够序列化用户对象上的横幅图像哈希，从而允许机器人被动接收字段。
【讨论】：