NodeJS CSVはファイル名と内容の文字化けをエクスポートします.

//                

var userAgent = (req.headers['user-agent']||'').toLowerCase();

res.set('Content-Type', 'application/octet-stream;charset=utf-8');



if(userAgent.indexOf('msie') >= 0 || userAgent.indexOf('chrome') >= 0) {

    res.setHeader('Content-Disposition', 'attachment; filename=' + encodeURIComponent(filename));

} else if(userAgent.indexOf('firefox') >= 0) {

    res.setHeader('Content-Disposition', 'attachment; filename*="utf8\'\'' + encodeURIComponent(filename)+'"');

} else {

    res.setHeader('Content-Disposition', 'attachment; filename=' + new Buffer(filename).toString('binary'));

}



//   excel      

var dataBuffer = Buffer.concat([new Buffer('\xEF\xBB\xBF', 'binary'), new Buffer(data)]);

res.send(dataBuffer);