NodeJS Express3 File Upload

Simple Style

This example is only bodyparser, no additional middleware.(No multiparty, multur)

Steps

• Receive file and save /tmp
• Move current application directory

app.js

var express = require('express')
  , routes = require('./routes')
  , http = require('http')
  , path = require('path')
  , fs = require('fs')

var app = express();

var done = false;

// all environments
app.set('port', process.env.PORT || 3000);
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(app.router);
app.use(express.static(path.join(__dirname, 'public')));

// development only
if ('development' == app.get('env')) {
  app.use(express.errorHandler());
}

app.get('/', routes.index);
app.post('/upload', function(req, res){
  console.log(req.files); // file list and attrs
  
  if (req.files.fileupload) {
    var tmp_path = req.files.fileupload.path;
    var target_path = './uploads/' + req.files.fileupload.name;
    fs.rename(tmp_path, target_path, function(err) {
      if (err) {
        throw err;
      }
      fs.unlink(tmp_path, function() {
        if (err) {
          throw err;
        }
        res.send('File uploaded to: ' + target_path + ' - ' + req.files.fileupload.size + ' bytes');
      });
    });
  }
  else {
    console.lot('file is not correctly');
    res.redirect('/');
  }
});

http.createServer(app).listen(app.get('port'), function(){
  console.log('Express server listening on port ' + app.get('port'));
});

index.jade

extends layout

block content
  h1= title
  p File Upload
  form(method="post", enctype="multipart/form-data", action="/upload")
    input(type="file", name="fileupload")
    input(type="submit")