web-dev-qa-db-fra.com

Téléchargement d'image sur Amazon s3 à l'aide de nodejs multer-s3

J'essaie de télécharger une image sur Amazon s3 à l'aide de multer-s3, mais je reçois cette erreur:

TypeError: Opts.s3 devrait être un objet node_modules/multer-s3/index.js: 69: 20

Voici mon code serveur:

var upload = multer({
    storage: s3({
        dirname: '/',
        bucket: 'bucket',
        secretAccessKey: 'key',
        accessKeyId: 'key',
        region: 'us-west-2',
        filename: function (req, file, cb) {
            cb(null, file.originalname); 
        }
    })
});

app.post('/upload', upload.array('file'), function (req, res, next) {
    res.send("Uploaded!");
});

Pourquoi je reçois cette erreur?

node.jsfile-uploadamazon-s3multermulter-s3
12
mBlaze

Terminé et fonctionnel Node Cheat | Upload to s3 using multer-s available.

Code:

var express = require('express'),
    aws = require('aws-sdk'),
    bodyParser = require('body-parser'),
    multer = require('multer'),
    multerS3 = require('multer-s3');

aws.config.update({
    secretAccessKey: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
    accessKeyId: 'XXXXXXXXXXXXXXX',
    region: 'us-east-1'
});

var app = express(),
    s3 = new aws.S3();

app.use(bodyParser.json());

var upload = multer({
    storage: multerS3({
        s3: s3,
        bucket: 'bucket-name',
        key: function (req, file, cb) {
            console.log(file);
            cb(null, file.originalname); //use Date.now() for unique file keys
        }
    })
});

//open in browser to see upload form
app.get('/', function (req, res) {
    res.sendFile(__dirname + '/index.html');//index.html is inside node-cheat
});

//use by upload form
app.post('/upload', upload.array('upl',1), function (req, res, next) {
    res.send("Uploaded!");
});

app.listen(3000, function () {
    console.log('Example app listening on port 3000!');
});

Pour un repo complet:

Clone node-cheat express_multer_s , exécutez node app suivi par npm install express body-parser aws-sdk multer multer-s3.

Bonne aide!

42
Zeeshan Hassan Memon

s3 doit être un objet à transmettre. Selon les documents, l'objet doit être comme ceci:

var upload = multer({
  storage: multerS3({
    s3: s3,
    bucket: 'some-bucket',
    metadata: function (req, file, cb) {
      cb(null, {fieldName: file.fieldname});
    },
    key: function (req, file, cb) {
      cb(null, Date.now().toString())
    }
  })
})

Documents MulterS

6
V31

Zeeshan a très bien répondu mais je veux ajouter mes 2 cents.

Je crois qu'il faut garder une responsabilité dans un seul fichier, pour une meilleure organisation du code et un meilleur débogage.

J'ai créé un fichier à télécharger upload.js.

require('dotenv').config();
const AWS = require('aws-sdk');
const multer = require('multer');
const multerS3 = require('multer-s3');

const s3Config = new AWS.S3({
    accessKeyId: process.env.AWS_IAM_USER_KEY,
    secretAccessKey: process.env.AWS_IAM_USER_SECRET,
    Bucket: process.env.AWS_BUCKET_NAME
  });

const fileFilter = (req, file, cb) => {
    if (file.mimetype === 'image/jpeg' || file.mimetype === 'image/png') {
        cb(null, true)
    } else {
        cb(null, false)
    }
}

// this is just to test locally if multer is working fine.
const storage = multer.diskStorage({
    destination: (req, res, cb) => {
        cb(null, 'src/api/media/profiles')
    },
    filename: (req, file, cb) => {
        cb(null, new Date().toISOString() + '-' + file.originalname)
    }
})

const multerS3Config = multerS3({
    s3: s3Config,
    bucket: process.env.AWS_BUCKET_NAME,
    metadata: function (req, file, cb) {
        cb(null, { fieldName: file.fieldname });
    },
    key: function (req, file, cb) {
        console.log(file)
        cb(null, new Date().toISOString() + '-' + file.originalname)
    }
});

const upload = multer({
    storage: multerS3Config,
    fileFilter: fileFilter,
    limits: {
        fileSize: 1024 * 1024 * 5 // we are allowing only 5 MB files
    }
})

exports.profileImage = upload;

Qui est importé dans mes itinéraires routes.js

const express = require('express');

const ProfileController = require('../profile/controller');
const { profileImage } = require('../utils/upload.js'); 

 const routes = (app) => {
    const apiRoutes = express.Router();

    apiRoutes.use('/profile', profileRoutes);
    profileRoutes.post('/',profileImage.single('profileImage'), ProfileController.saveProfile);

    app.use('/api', apiRoutes);

 }

module.exports = routes

Capture d'écran du facteur pour le corps du message

enter image description here

6
Anjum....
/*** Using Multer To Upload Image image is uploading */

const fileStorage = multer.diskStorage({
  destination: function(req, file, cb) {
    cb(null, "./public/uploads");
  },
  filename: function(req, file, cb) {
    cb(null, file.originalname);
  }
});

/** AWS catalog */

aws.config.update({
  secretAccessKey: process.env.SECRET_KEY,
  accessKeyId: process.env.ACCESS_KEY,
  region: "us-east-1"
});

const s3 = new aws.S3();
const awsStorage = multerS3({
  s3: s3,
  bucket: process.env.BUCKET_NAME,
  key: function(req, file, cb) {
    console.log(file);
    cb(null, file.originalname);
  }
});

const upload = multer({
  /**if you are using local storage than use
   * storage: fileStorage,
   * if you are using aws storage than use
   * storage: awsStorage,
   */
  storage: awsStorage,
  limits: { fileSize: 5000000 },
  fileFilter: function(req, file, cb) {
    checkFileType(file, cb);
  }
});
app.post("/user-profile-image", upload.single("profile"), (req, res, err) => {
  try {
    res.send(req.file);
  } catch (err) {
    res.send(400);
  }
});

const checkFileType = (file, cb) => {
  const filetypes = /jpeg|jpg|png|gif/;
  const extname = filetypes.test(path.extname(file.originalname).toLowerCase());
  const mimetype = filetypes.test(file.mimetype);

  if (mimetype && extname) {
    return cb(null, true);
  } else {
    cb("Error: Images Only!");
  }
};
0
Hassan Masood