discord.js 将一张图片放在另一张图片上

Question

我一直在尝试发出一个命令，当您发送图像或图像的 url 时，它将该图像放在我已经在代码中的另一个图像上，并且我每次都会收到错误我尝试将其更改为 imageTemp（这是您放置图像的图像）或 image`` or messageAttachment```。我会把我的代码放在下面，这样你就可以看到问题所在。

const { MessageAttachment } = require('discord.js');
const Jimp = require('jimp');
const discord = require('discord.js')

module.exports = {
  name: "img",
  aliases: [],
  run: async (client, message, args) => {
    let messageAttachment = message.attachments.size > 0 ? message.attachments.array()[0].url : null
    try {
      let imageTemp = "https://upload.wikimedia.org/wikipedia/commons/8/8a/Banana-Single.jpg"
      let image = await Jimp.read(messageAttachment);
      let buffer = await image.getBufferAsync(Jimp.MIME_JPEG);

    Jimp.read(imageTemp).then(image => {
    image.composite(messageAttachment, 10, 10)
    })

      message.channel.send(new MessageAttachment(buffer));
    } catch (err) {
      console.log(err);
      message.channel.send('Oops, there was an error. Try inputting the command again.');
    }
  },
};

这是我得到的结果和错误 https://imgur.com/a/C6RcTOf

Answer 1

Jimp.composite() 方法接受一个 Jimp 图像对象作为它的第一个参数。传入时不是 url (messageAttachment)。此外，您在修改图像之前将图像保存到缓冲区。

而你说的错误发生在messageAttachment为null时。如果邮件没有附件，您应该检查 return。

const imageTemp = "https://upload.wikimedia.org/wikipedia/commons/8/8a/Banana-Single.jpg";
const messageAttachment = message.attachments.size > 0 ? message.attachments.array()[0].url : null;

// Exit if there is no message attachment present in the message
if (!messageAttachment) return;

// Resolve the temporary image url to Jimp object
const firstImage = await Jimp.read(imageTemp);
// Resolve the message attachment image url to Jimp object
const secondImage = await Jimp.read(messageAttachment);

// Composite the two images together (modifies the firstImage object)
firstImage.composite(secondImage, 10, 10);

// Save the resulting image to buffer
const buffer = await firstImage.getBufferAsync(Jimp.MIME_JPEG);

// Send the buffer as a message attachment
message.channel.send("Combined image:", {files: [{ attachment: buffer }]});

discord.js 将一张图片放在另一张图片上

discord.js putting an image on another image

javascript

node.js

discord.js

image-manipulation

jimp