Node js 抓取local Server 路徑的資料

  var file = __dirname + '/test.json';

  var filename = path.basename(file);
  var mimetype = mime.lookup(file);

  res.setHeader('Content-disposition', 'attachment; filename=test.json');
  res.setHeader('Content-type', 'application/javascript');

  var filestream = fs.createReadStream(file);
  filestream.pipe(res);