express를 이용한 파일업로드

var express = require('express')
  , format = require('util').format;

var app = module.exports = express()
var fs = require('fs');

// bodyParser in connect 2.x uses node-formidable to parse 
// the multipart form data.
// 업로드파일의 임시저장위치 지정
app.use(express.bodyParser({uploadDir:'D:/temp'}));

app.get('/', function(req, res){
  res.send('<form method="post" enctype="multipart/form-data">'
    + '<p>Title: <input type="text" name="title" /></p>'
    + '<p>Image: <input type="file" name="image" /></p>'
    + '<p><input type="submit" value="Upload" /></p>'
    + '</form>');
});

app.post('/', function(req, res, next){  
	//console.log(req.files);
   	var tmp_path = req.files.image.path;
   	// set where the file should actually exists - in this case it is in the "images" directory
   	var target_path = './upload/' + req.files.image.name;
   	// move the file from the temporary location to the intended location
   	fs.rename(tmp_path, target_path, function(err) {
    	if (err) throw err;
       	// delete the temporary file, so that the explicitly set temporary upload dir does not get filled with unwanted files
       	fs.unlink(tmp_path, function() {
        	if (err) throw err;
           	res.send('File uploaded to: ' + target_path + ' - ' + req.files.image.size + ' bytes');
       	});
   	});
    
});

if (!module.parent) {
	app.listen(3000);
  	console.log('Express started on port 3000');
}

참조:

https://github.com/visionmedia/express/blob/master/examples/multipart/app.js

http://www.hacksparrow.com/handle-file-uploads-in-express-node-js.html