One each data event, write the data to the writeable stream. Once the server finishes sending data, close the instance of fs. If you use fs. Use fs. To download files using curl in Node.
We are using spawn instead of exec for the sake of convenience - spawn returns a stream with data event and doesn't have buffer size issue unlike exec. That doesn't mean exec is inferior to spawn ; in fact we will use exec to download files using wget.
The way data was written to the instance of fs. Active 2 months ago. Viewed k times. How do I download a file with Node. Joseph is making an incorrect assertion that all node processes are server processes — lededje. It is prefectly doable. Add a comment. Active Oldest Votes. Michelle Tilley Michelle Tilley k 39 39 gold badges silver badges bronze badges.
I got the following console output when I ran this script: node. Does this code close the file properly when the script ends or would it lose data? This depends upon the req url type if you are requesting https you must use https otherwise it will throw error. EthanKeiley why do you say that it isn't closed properly?
By default createWriteStream will set autoClose to true and readable. Show 14 more comments. 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 can further read about GET function here. Next function is the download function which is responsible for downloading server file. But without any user interface this program is dull and boring now to add some UI first create a html file in your project folder you can name it yourself.
After that write below code in it. What this will do is add a download button on your server to download server file but first we have to access this file in order to make it possible. So, add changes to your index. In this article we learned how to download the files in node. Like Article.
Last Updated : 20 Mar, Next How to create a directory using Node. Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert. Writing code in comment?
0コメント