server.js

// nodejs server for upload testing

var express = require('express');
var path = require('path')
var fs = require('fs');
var app = express();

fs.mkdir('./uploads', 0777, function() {
});

app.use(express.bodyParser({uploadDir:'./uploads'}));

app.post('/upload', function(req, res) {
    var tmp_path = req.files.upload_file.path;
    var target_path = path.resolve('./uploads', req.files.upload_file.name);

    fs.rename(tmp_path, target_path, function(err) {
        if (err) throw err;
        fs.unlink(tmp_path, function() {
            if (err) throw err;
            res.send({
                success: true,
                file_path: 'assets/images/' + req.files.upload_file.name
            });
        });
    });
});

module.exports = app;