如何从heroku下载一些文件

Question

I made one Dyno app in Heroku using node.js

that Dyno task is to collect data and create json file daily

but I don't know how to download them locally

I tried

http://myappname.heroku.com/filename.json

but failed

Heroku is new for me,so please don't treat me like advance user

Answer 1

You cannot do this.

If your code is writing a JSON file to the Heroku server daily, that file is almost instantly being deleted, so there is no way you can download it.

Heroku dynos are ephemeral. This means that any data you 'save' to the filesystem will be deleted almost instantly. If you need to save files, you should save them to a file service like Amazon S3 -- then download them through there.

Answer 2

Save your JSON file to /public folder.

Ensure that your app.js has the following: app.use(express.static(__dirname + '/public'))

Now, you should be able to access: http://myappname.heroku.com/filename.json