CODEWITHSUNDEEP
javascriptnode.jshtml
user7522312
user7522312

Reputation:

How to download file with http post Node.js

I would like to know how I can download a file sending parameters by POST. For example I have an invoice where I have saved the file path and I want to send that path through parameters to download it. But now I can only do it with a GET:

Server:

app.get('/getfile', isLoggedIn, function(req, res) {
            res.download('uploads/myExcelFile.xlsx', "myExcelFile.xlsx");
});

Client:

window.open('/getfile');

Or:

<a href="getfile" download="myExcelFile.xlsx">Download Text</a>

Upvotes: 0

Views: 2759

Answers (2)

kamprasad
kamprasad

Reputation: 648

First you have to set some header information, after that create file object and stream the file through respond.

app.post('/getfile', isLoggedIn, function(req, res) {
      res.writeHead(200, {
          'Content-Type': 'audio/mpeg',
          'Content-Length': stat.size,
           'Content-Disposition': 'attachment; filename=your_file_name'
      });


      var file = fs.readFile(filePath, 'binary');

      res.setHeader('Content-Length', stat.size);
      res.setHeader('Content-Type', 'audio/mpeg');
      res.setHeader('Content-Disposition', 'attachment; filename=your_file_name');
      res.write(file, 'binary');
      res.end();
  });

In UI, create javascript form object and submit 

var form = document.createElement("form");
form.setAttribute("method", "post");
form.setAttribute("action", "URL");
form.submit();

Upvotes: 0

Vashnak
Vashnak

Reputation: 362

You can use express for that

var express = require('express');
var app = express();

app.get('/files/:file', function(req, res, next){ // this routes all types of file
    res.download("./" + req.params.file);
});

app.listen(3000, function () {
    console.log('Example app listening on port 3000!')
});

You can use this url (localhost:3000/files/myFile.txt) assuming the file exist sure

Upvotes: 3

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