代码如下：
'use strict';
var fstream = require('fstream');
var fs = require('fs');
var path = require('path');
var formidable = require('formidable'),
http = require('http');
http.createServer(function (req, res) {
if (req.url == '/upload' && req.method.toLowerCase() == 'post') { // parse a file upload
var form = new formidable.IncomingForm();
form.uploadDir = 'dir';
form.parse(req, function (err, fields, files) {
fstream.Reader({
'path': path.resolve(files.upload.path)
})
.pipe(fstream.Writer({
'path': path.resolve(files.upload.name)
}))
.on('close', function () {
// delete tmp file
fs.unlink(path.resolve(files.upload.path));
res.end(' uploaded');
});
});
return;
} // show a file upload form
res.writeHead(200, {
'content-type': 'text/html'
});
res.end(
'<form action="/upload" enctype="multipart/form-data" ' +
'method="post">' +
'<input type="file" name="upload" multiple="multiple"><br>' +
'<input type="submit" value="Upload">' +
'</form>'
);
}).listen(8888);
console.log('Server is listen at http://localhost:8888');