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Tuesday, 19 January 2016

Multiple File Upload in Node.js

In this post we will be discussing about multiple file upload in Node.js. We will be using Multer which is a Node.js middleware for handling 'multipart/form-data'. In our previous post we have discussed about Single File Upload in Node.js.


Multiple File Upload in Node.js Code :

Server.js

var express = require('express');
var multer = require('multer');
var app = express();
var port = 5000;

app.set('port', port); 

var storage = multer.diskStorage({
  destination: function (request, file, callback) {
    callback(null, '/example/uploads');
  },
  filename: function (request, file, callback) {
    console.log(file);
    callback(null, file.originalname)
  }
});

/* In the below line you will have an array of photos files. request.files is an object where fieldname is the key and value is the array of files */ 

var upload = multer({storage: storage}).array('photo', 5);

app.get('/', function(resuest, response) {
  response.sendFile('/example/index.html');
});

app.post('/upload', function(request, response) {
  upload(request, response, function(err) {
    if(err) {
      console.log('Error Occured');
      return;
    }
    // request.files is an object where fieldname is the key and value is the array of files 
    console.log(request.files);
    response.end('Your Files Uploaded');
    console.log('Photo Uploaded');
  })
});

var server = app.listen(port, function () {
  console.log('Listening on port ' + server.address().port)
});

Index.html

<form enctype="multipart/form-data" action="/upload" method="post">
  <input type="file" name="photo" multiple />
  <input type="submit" value="Upload Image" name="submit" />
</form>

If you run the above code and upload more than one images, your images will be uploaded in Uploads folder. You will get an output as shown below.


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3 comments:

  1. Just tried it and i get an error.
    Installed Node, installed express, set my directory structure as you have it in the code and when i run it i get the following error

    """
    [arch@Arch fileuploader]$ ls
    example node_modules package.json server.js
    [arch@Arch fileuploader]$ ls example/
    index.html uploads
    [arch@Arch fileuploader]$ sudo node server.js
    /home/arch/Projects/js/fileuploader/server.js:35
    is the array of files
    ^^^
    SyntaxError: Unexpected identifier
    at Object.exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:513:28)
    at Object.Module._extensions..js (module.js:550:10)
    at Module.load (module.js:458:32)
    at tryModuleLoad (module.js:417:12)
    at Function.Module._load (module.js:409:3)
    at Function.Module.runMain (module.js:575:10)
    at startup (node.js:160:18)
    at node.js:449:3
    """

    ReplyDelete
  2. req.files is not working it seems

    ReplyDelete
    Replies
    1. if request.files ism't work you add
      var bodyParser = require("body-parser");
      your project and check it

      Delete

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