Node/Express file upload
ExpressJS Issue:
Most of the middleware is removed from express 4.check out: http://www.github.com/senchalabs/connect#middlewareFor multipart middleware like busboy, busboy-connect, formidable, flow, parted is needed.
This example works using connect-busboy middleware. create /img and /public folders.
Use the folder structure:
\server.js
\img\"where stuff is uploaded to"
\public\index.html
SERVER.JS
var express = require('express'); //Express Web Server var busboy = require('connect-busboy'); //middleware for form/file uploadvar path = require('path'); //used for file pathvar fs = require('fs-extra'); //File System - for file manipulationvar app = express();app.use(busboy());app.use(express.static(path.join(__dirname, 'public')));/* ========================================================== Create a Route (/upload) to handle the Form submission (handle POST requests to /upload)Express v4 Route definition============================================================ */app.route('/upload') .post(function (req, res, next) { var fstream; req.pipe(req.busboy); req.busboy.on('file', function (fieldname, file, filename) { console.log("Uploading: " + filename); //Path where image will be uploaded fstream = fs.createWriteStream(__dirname + '/img/' + filename); file.pipe(fstream); fstream.on('close', function () { console.log("Upload Finished of " + filename); res.redirect('back'); //where to go next }); }); });var server = app.listen(3030, function() { console.log('Listening on port %d', server.address().port);});INDEX.HTML
<!DOCTYPE html><html lang="en" ng-app="APP"><head> <meta charset="UTF-8"> <title>angular file upload</title></head><body> <form method='post' action='upload' enctype="multipart/form-data"> <input type='file' name='fileUploaded'> <input type='submit'> </body></html>The following will work with formidableSERVER.JS
var express = require('express'); //Express Web Server var bodyParser = require('body-parser'); //connects bodyParsing middlewarevar formidable = require('formidable');var path = require('path'); //used for file pathvar fs =require('fs-extra'); //File System-needed for renaming file etcvar app = express();app.use(express.static(path.join(__dirname, 'public')));/* ========================================================== bodyParser() required to allow Express to see the uploaded files============================================================ */app.use(bodyParser({defer: true})); app.route('/upload') .post(function (req, res, next) { var form = new formidable.IncomingForm(); //Formidable uploads to operating systems tmp dir by default form.uploadDir = "./img"; //set upload directory form.keepExtensions = true; //keep file extension form.parse(req, function(err, fields, files) { res.writeHead(200, {'content-type': 'text/plain'}); res.write('received upload:\n\n'); console.log("form.bytesReceived"); //TESTING console.log("file size: "+JSON.stringify(files.fileUploaded.size)); console.log("file path: "+JSON.stringify(files.fileUploaded.path)); console.log("file name: "+JSON.stringify(files.fileUploaded.name)); console.log("file type: "+JSON.stringify(files.fileUploaded.type)); console.log("astModifiedDate: "+JSON.stringify(files.fileUploaded.lastModifiedDate)); //Formidable changes the name of the uploaded file //Rename the file to its original name fs.rename(files.fileUploaded.path, './img/'+files.fileUploaded.name, function(err) { if (err) throw err; console.log('renamed complete'); }); res.end(); });});var server = app.listen(3030, function() {console.log('Listening on port %d', server.address().port);});
Another option is to use multer, which uses busboy under the hood, but is simpler to set up.
var multer = require('multer');Use multer and set the destination for the upload:
app.use(multer({dest:'./uploads/'}));Create a form in your view, enctype='multipart/form-data is required for multer to work:
form(role="form", action="/", method="post", enctype="multipart/form-data") div(class="form-group") label Upload File input(type="file", name="myfile", id="myfile")Then in your POST you can access the data about the file:
app.post('/', function(req, res) { console.dir(req.files);});A full tutorial on this can be found here.
I find this, simple and efficient:
const express = require('express');const fileUpload = require('express-fileupload');const app = express();// default optionsapp.use(fileUpload());app.post('/upload', function(req, res) { if (!req.files || Object.keys(req.files).length === 0) { return res.status(400).send('No files were uploaded.'); } // The name of the input field (i.e. "sampleFile") is used to retrieve the uploaded file let sampleFile = req.files.sampleFile; // Use the mv() method to place the file somewhere on your server sampleFile.mv('/somewhere/on/your/server/filename.jpg', function(err) { if (err) return res.status(500).send(err); res.send('File uploaded!'); });});