Before you start deployment you need to have a Heroku account. Once you’re registered with Heroku, follow the steps below to deploy the Spring Boot app.

Heroku CLI is a command line application which allow you to create, deploy and manage Heroku apps.

Enter the following command to login to Heroku using Heroku CLI

Run the following commands in two separate terminals to create a blissful development experience where your browser auto-refreshes when files change on your hard drive.

heroku login

A message will be prompted to enter your Heroku account’s credentials.

Enter your Heroku credentials:
Email: [email protected]
Password: **************
Logged in as [email protected]

You’re logged in to Heroku.

Execute the following commands from the root directory of the project to create a local Git repository for the project -

git init
git add .
git commit -m "initial commit"

Now, create a new heroku app using heroku command

heroku create

you can deploy the app by pushing the code to the repository which you just created.

git push heroku master

Heroku detects that the app and triggers the build accordingly.

##This way is not ideal in follwing cases,

Your project is closed source and you don’t want to push the source code to Heroku. Your project uses some dependencies that are internally developed for specific usage on premise only. In this case the source code won’t compile at Heroku because it won’t be able to download the internal dependencies.

Meanwhile you can also deploy executable jar/war of your project on Heroku by executing follownig commands with addition of above,

heroku plugins:install heroku-cli-deploy

heroku deploy:jar target/heroku-demo-0.0.1-SNAPSHOT.jar --app <APP-NAME>