nodejs如何发送请求excel文件并下载

Question

xlsx文件地址为：http://www.baidu.com/down?id=1
用nodejs如何发送http请求下载这个excel文件!
我用的是express框架,用request发送请求

var request = require('request');
router.get('/test', function (req, res) {
    req.pipe(request('https://www.baidu.com/img/bd_logo1.png')).pipe(res);
})

比如图换成图片，则可以显示，但excel文件的话就不能下载了！

Answer 1

res.download(path [, filename] [, fn]) http://expressjs.com/en/api.h...

Transfers the file at path as an “attachment”. Typically, browsers will prompt the user for download. By default, the Content-Disposition header “filename=” parameter is path (this typically appears in the browser dialog). Override this default with the filename parameter.

When an error ocurrs or transfer is complete, the method calls the optional callback function fn. This method uses res.sendFile() to transfer the file.

res.download('/report-12345.pdf');

res.download('/report-12345.pdf', 'report.pdf');

res.download('/report-12345.pdf', 'report.pdf', function(err){
  if (err) {
    // Handle error, but keep in mind the response may be partially-sent
    // so check res.headersSent
  } else {
    // decrement a download credit, etc.
  }
});