将图像上传到 mongoDB 并取回图像的 url：Multer

Question

我正在尝试将图像上传到 MongoDB，但是当我在 mongoCompass 中对其进行可视化时，它只显示其“_id”。所以不知道有没有通过

我需要：

将图像存储在数据库中
获取图像的 URL 存储在那里。

我正在使用 Express、Multer、Body-parser、fs、mongoose

这是我的 app.js

const express = require("express"),
      app = express(),
      bodyParser = require("body-parser"),
      fs = require("fs"),
      multer = require("multer"),
      mongoose = require("mongoose");

      mongoose.connect("mongodb://localhost/Images");  
app.use(bodyParser.urlencoded(
      { extended:true }
))

app.set("view engine","ejs");

//Schema
var imgSchema = mongoose.Schema({
    img:{data:Buffer,contentType: String,nom:String}
});
var image = mongoose.model("image",imgSchema); 


// SET STORAGE
var storage = multer.diskStorage({
    destination: function (req, file, cb) {
      cb(null, './uploads')
    },
    filename: function (req, file, cb) {
      cb(null, 'uploaded-' + Date.now()+".png")
    }
  })

  var upload = multer({ storage: storage })
  

app.get("/",(req,res)=>{
    res.render("index");
})

app.get("/show",(req,res)=>{
    image.find().toArray(function (err,result){
       const imgArray = result.map(element =>element._id);
       console.log(imgArray);
       if(err){
           return console.error(err);
       }
       res.send(imgArray)
   })
});

app.post("/uploadphoto",upload.single('myImage'),(req,res)=>{
    var img = fs.readFileSync(req.file.path);
    var encode_img = img.toString('base64');
    var final_img = {
        contentType:req.file.mimetype,
        image:new Buffer(encode_img,'base64'),
        nom:"hi"
    };
    image.create(final_img,function(err,result){
        if(err){
            console.log(err);
        }else{
            console.log(result.img.Buffer);
            console.log("Saved To database");
            res.contentType(final_img.contentType);
            res.send(final_img.image);
        }
    })
})
//Code to start server
app.listen(2000,function () {
      console.log("Server Started at PORT 2000");
})

this is what mongo shows me

This is the image upload folder

提前致谢

Answer 1

一切都在这里这个 Github 回购有详细的答案。 https://github.com/AnasGara/Upload-Image-Express-Mutler

将图像上传到 mongoDB 并取回图像的 url：Multer

Upload image to mongoDB and get back the url of the image: Multer

mongodb

express

multer

image-upload