Nodejs return data as file download

There should be a way to solve this problem without first writing the data to a file. Also, your code doesn't generate a unique filename that won't conflict with other requests and doesn't clean up the temporary file at an appropriate time.

Write data to a file and eventually delete it is not efficient. I'm looking for a better solution, any suggestions? Thank you for your advice. Hi, Maksim, please check the "update" of this answer.

Show 6 more comments. Diemo Diemo 14 14 silver badges 25 25 bronze badges. You maybe having buffer only so put download as request. I am getting Hello, World! Sign up or log in Sign up using Google. Sign up using Facebook. It is necessary get files from any directory to give the download. Here, I give the uploads directory to all download files. This get the all files that contains uploads folder. But how to show it in the table for downloads. And after that create the global.

Step 8 Download Code. This step to create the download file. This is the simple get the file and use res. Now run the application by the node app. Now click on the upload button it redirect in the upload route and give message successfully uploaded.

I hope that this article is helpful for you. Even if my file get uploaded, I can't see the file in the main page. Could you help? I've follow all the steps and I can't see why this is happening. It's better to register close and error event handlers before piping the response stream on the write stream.

Show 3 more comments. Thank you so much!! Was looking for this forever — Harrison Cramer. This answer is not complete, because when you download some larger files, the pipe will give you more than one events. This code does not wait until the whole file has been downloaded before one can call then on it.

Take a look at my solution to find what I consider a more complete solution. Armand Armand 1 1 silver badge 3 3 bronze badges. Welcome to StackOverflow! You may want to provide a bit of explanation to go along with your code sample. Alexey Prokhorov 2, 1 1 gold badge 17 17 silver badges 23 23 bronze badges. Aman Saraf Aman Saraf 2 2 silver badges 12 12 bronze badges.

Take a look at this tutorial: tutorialspoint. Abdul maybe it would be good if you share with the rest of the class what you have figured out? Is there a way to see the speed of the download? Show 7 more comments. Kelvin Omereshone 2 2 silver badges 11 11 bronze badges. Abdul You specify the callback with a function only if you need to do something when the file has been successfully fetched. It would be good to check the status code before saving: response.

But we don't check the result return cb err. Buzut Buzut 4, 4 4 gold badges 41 41 silver badges 50 50 bronze badges. The request module just works straight for HTTPs. S Ventura. It's more error prone without a doubt.

Anyway, in any case where using request module is an option, I'd advise it as it's way higher level and thus, easier and efficient. Alex, nope, this is an error message and there's a return. So if response. Thank you for showing example using request module. Show 3 more comments. MikeL 5, 38 38 silver badges 41 41 bronze badges. Augusto Roman Augusto Roman 6 6 silver badges 4 4 bronze badges. What for are you storing request into a variable?

You are right, there is no need to save the request, its not used anyway. That's what you mean? Yes, I think that's what polkovnikov. Per default the fs. Bjarke Pjedsted Bjarke Pjedsted 4 4 silver badges 8 8 bronze badges. Two comments on this: 1 it should probably reject Error objects, not strings, 2 fs.

This works great! No errors popped up but the. Removing the logic for the flag fixed it. Just wanted to point that out if someone had the issues with the approach. Is there a memory leak in this answer: stackoverflow. You can add timeout like I did in http. The memory leak is only if the file take too long to be downloaded. Run the Node. We also see how to use json2csv to write data to CSV file, Sequelize to retrieve items in database table without need of boilerplate code.

Or download Excel file instead: Node. You can find the complete source code for this example on Github. Leave a Reply Cancel reply Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.