How to deploy .war to heroku

Question

I have made a dynamic web project on eclipse that starts on front end with index.html . I have tested it and it works on my local apache server. I have generated the war file. Now I want to deploy the war file to heroku. I have downloaded and installed everything. I checked the internet and I came to know about creating

pom.xml , a Main class to start execution , maven assembler jar file.

As a beginner I am not able to understand how to create these files and push them to heroku. Can someone please explain me ? I dont want to create a new heroku project.

Answer 1

There are two ways to deploy a war to Heroku:

• Using the webapp-runner (or the similar jetty-runner)
• Using the toolbelt deploy:war command

The preferred approach is using webapp-runner because it allows for more configuration of the container. Here is an article on using webapp-runner . The webapp-runner is a simple Tomcat container used to run your war file. In general, you add webapp-runner to your pom.xml , set your Procfile accordingly, and deploy to Heroku with git push .

The deploy:war approach is described in this article . It's somewhat outdated, and does not give you much in the way of configuration.

Answer 2

1. Export war from eclipse.
2. Login through your Heroku CLI.
3. use this command to install heroku plugin heroku plugins:install heroku-cli-deploy
4. Deploy with this command heroku war:deploy <path_to_war_file--app <app_name>

For more information please visit: https://devcenter.heroku.com/articles/war-deployment

Answer 3

I used successfully:

1. heroku buildpacks:set heroku/java
2. heroku buildpacks:clear
3. heroku war:deploy target/routeplanner.war
4. heroku logs --tail

I added to Procfile

buildpacks:clear
war:deploy target/routeplanner.war

and after

git push

Build and deploy completed. In log:

app[api]: Deploy a68256e8
app[api]: Build succeeded

But create the project URL returns Error: "in the application and your page could not be served"

In log: heroku[router]: at=error code=H14 desc="No web processes running"

But why do I have to request these commands again from console to reanimate application work?

1. heroku buildpacks:clear
2. heroku war:deploy target/routeplanner.war