Nodejs fs download file

Alright, you have a sample image and the related download URL. The Axios initialization to request a file is equal to a request that expects another response payload format, like JSON. To download a file, explicitly define responseType: 'stream' as a request option. This tells Axios to provide the response.

From there, pipe the read-stream into a Node. This will pass the incoming bytes from your read-stream to the write-stream and ultimately flush every piece of the image to a local file. We will pass the file that has been selected to fileToUpload variable. The function starts by creating a FormData object, then appends the file name and file content to that object. UploadProgress, that means the upload is still in progress. The fs.

If the file does not exist, the file will be created:. If the file does not exist, an empty file is created:. Don't forget to handle errors!

The following code is based on Augusto Roman's answer. But we don't check the result if cb cb err. Vince Yuan Vince Yuan VinceYuan the callback is confusing me. What would I place as the cb argument? Abdul Sounds like you are very new to node. 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. Based on the other answers above and some subtle issues, here is my attempt. Check the file does not exist before hitting the network by using fs. Only create the fs. How to download a file in Node. Built-in modules Node. You might also like How to terminate a Node.