How to shut down a Spring Boot command-line application

Question

I am building a Command Line java application using Spring Boot to get it working quickly.

The application loads different types of files (for example CSV) and loads them into a Cassandra Database. It does NOT use any web components, it is not a web application.

The problem I am having is to stop the application when the work is done. I am using the Spring CommandLineRunner interface with a @Component to run the tasks, as shown below, but when the work is completed the application does not stop, it keeps running for some reason and I can't find a way to stop it.

@Component
public class OneTimeRunner implements CommandLineRunner {

    @Autowired
    private CassandraOperations cassandra;

    @Autowired
    private ConfigurableApplicationContext context;

    @Override
    public void run(String... args) throws Exception {
        // do some work here and then quit
        context.close();
    }
}

UPDATE: the problem seems to be spring-cassandra, since there is nothing else in the project. Does anyone know why it keeps threads running in the background that prevent the application from stopping?

UPDATE: the problem disappeared by updating to the latest spring boot version.

Answer 1

I found a solution. You can use this:

public static void main(String[] args) {
    SpringApplication.run(RsscollectorApplication.class, args).close();
    System.out.println("done");
}

Just use .close() on run.