如何在使用 GridFS 和 NodeJS 將圖像存儲到 MongoDB 之前壓縮圖像？

Question

我正在嘗試使用 GridFS 和 MongoDB 在我的 NodeJS 應用程序中上傳圖像。 我想在將圖像上傳到 MongoDB 之前對其進行壓縮，並且我已經共享了 GridFS 中間件。

我想知道我應該把壓縮代碼放在哪里，或者是否有更好的方法來壓縮圖像？

require('dotenv').config();
const multer = require('multer');
const GridFsStorage = require('multer-gridfs-storage');
const Grid = require('gridfs-stream');
const Mongoose = require('mongoose');
const Mongouri = process.env.MONGO_URL;
let conn = Mongoose.connection;
let gfs;
conn.once('open',()=>{
    gfs = Grid(conn.db,Mongoose.mongo);
    gfs.collection('Posts');
});


//defining the middleware for multer so this will be called everytiime a new image is uploaded using multer 
let storage = new GridFsStorage({
    url:Mongouri,
    file:(req,file)=>{
        return new Promise(
            (resolve,reject)=>{
                const fileInfo = {
                    filename:Mongoose.Types.ObjectId()+file.originalname,
                    bucketName:"Posts"
                };
                resolve(fileInfo);
            }
        );
    }

});


//initialising multer with the middleware 
const upload = multer({storage});

module.exports = upload;

Answer 1

Sharp 是在將圖像保存到數據庫之前壓縮圖像的更好工具。 來源-夏普npm模塊