localhost refused to connect

Could you push your project on GitHub?

It is very hard to say where the error see without seeing your code ...

Because this way I can find the error very fast.

The easiest way to do it:

I. Register on GitHub. If you don't have account there, today is a good day to create one :)

II. Login to GitHub account in Intellijidea. You basically should enter your credentials in GitHub Intellijidea dialog. Check this link:

https://www.jetbrains.com/help/idea/2016.2/registering-github-account-in-intellij-idea.html

III. 'Share project on GitHub'. One click, check here:

https://www.jetbrains.com/help/idea/2016.2/publishing-a-project-on-github.html

And just in case, here also one helpful page:

https://www.jetbrains.com/help/idea/2016.2/using-github-integration.html

Coming back to your error after googling gives nothing, other than may be you haven't started the server at all, or port number is wrong. Again hard to say need to see the files. Error is saying that there is no server or app or anything on localhost, or your app is not running ...

Also please type exactly what page are you loading. By default with port 8080, should be :

http://localhost:8080

Or just

localhost:8080

should work if Spring bootRun is working

Hope you are running the same command ...

It may also be that port 8080 is busy, but that you should see in your log, that you haven't show...

So it could be nice if print log file here...

But again, the best option is for you to push project on GitHub, so that I can download it and say whether it works on my machine ...