Deploying a jHipster with MongoDB app to Heroku, with ObjectRocket addon

Question

I have created a jHipster application that uses a MongoDB database. I am trying for the last few days to deploy it on Heroku. I've run the heroku generator as required. "jhipster heroku". I also pushed the code to the heroku branch with "git push heroku master". However, I still have a problem.

Caused by:

org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoDbFactorySupport]: Factory method 'mongoDbFactory' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongo' defined in class path resource [org/springframework/boot/autoconfigure/mongo/MongoAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.mongodb.MongoClient]: Factory method 'mongo' threw exception; nested exception is java.lang.IllegalArgumentException: The connection string is invalid. Connection strings must start with either 'mongodb://' or 'mongodb+srv://

I do realize that I have to place the MongoDB connection string, provided by the ObjectRocket addon, somewhere in the.yml files, but I am not sure where. This is not a duplicate of Deploying a JHipster/MongoDB application to Heroku because that question was asked 5 years ago and since then, Heroku provided a subgenerator for MongoDB apps on Heroku. Also, should I modify the Profile somehow?

Thanks a lot for the help!

Answer 1

JHipster should have generated a application-heroku.yml under src/main/resources . It should contain the spring data property for the mongo db connection ( spring.data.mongodb.uri ). You should replace the value with your object rocket connection string.

Side note, why you have the errors message: JHipster uses only add-ons with a free tier. For mongo db it was mLab's addon. Sadly it has been discontinued. There is an open issue to update JHipster's heroku integration accordingly. https://github.com/jhipster/generator-jhipster/issues/13424

Answer 2

I managed to solve it finally. I suspected it due to the application-heroku.yml file. But this was not the only problem for me. The main problem was that I didn;t knew I have to edit the Procfile also. Tip for anyone that lands here. You should check that the Procfile is also edited with the database name.