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My project contains several services, each one is annotated with @SpringBootApplication and can be run on a random port via "gradle bootRun".
Is it possible to build the services into jars and run them together in one JVM? Not matter by programmatic method or just put them in a container.
Please show me some instructions if possible. Thanks!
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No you can have only one application listening on a specific port at a time.
In this example we are having two SpringBoot applications that we want to merge into one and for that we will create a new SpringBoot application for package them both and add the two old applications as maven dependencies. Then we will ask Spring to boot-up the application.
It's a little hacky, but can be done. I wrote a blog post about it some time ago: Running Multiple Spring Boot Apps in the Same JVM. The basic idea is to run every Spring Boot application in a different classloader (because otherwise there would be resource conflicts).
I, personally, only used it for testing. I would prefer to run the different applications in different docker containers in production. But for testing it's pretty cool: You can quickly boot up your application and debug everything...
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If you want to launch multiple spring boot microservices in single JVM then you can achieve this by launching multiple threads. Please refer sample code here https://github.com/rameez4ever/springboot-demo.git
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