将jar运行为docker映像并在其他Java应用程序中使用此jar

Question

I have a jar that do some business functionality and developed as a standalone component. Now I want to use it as a Microservice hosted as docker image. I was able to create a docker image by following the tutorial as: https://dzone.com/articles/run-simple-jar-application-in-docker-container-1

Now I have two problems:

1. How to call the methods of the classes in this Jar in other java applications
2. how to do the integration testing?

I am asking this as I need to take a decision if I should convert this JAR to a REST based application or it can be used as a Microservice in its actual (jar) based packaging.

Thanks

Answer 1

In the article it had

CMD java -jar HelloWorld.jar

I want you to imagine the logical extension of hello world that takes arguments and can output "Hello Steve" instead.

change that line to

ENTRYPOINT ["java", "--jar", "HellowWorld.jar"]

and

CMD ["World"]