nodejs download file from server to local

app.get('/dnExcelToLocal',function(req,res){

var path = require('path');

var fs = require('fs');

var file = '/Users/xxx/Documents/projName/xlsx/armor.xlsx';

var filename = path.basename(file);

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

var fileStream = fs.createReadStream(file);

fileStream.pipe(res);

});

示例中是自己的需求,将xlsx文件 下载到本地.