I needed to make a service to be called and start running immediately. I could call it a cron job or a jar file. The issue was the entry point. In a normal service, the server starts and the controllers are exposed and code happens once the endpoints in the controller are hit. But how to design when no controller?

Here’s a solution I used:

@SpringBootApplication public class CatApplication {

@Autowired
private Service service;

public static void main(String[] args) {
	SpringApplication.run(CatApplication.class, args);
}

@PostConstruct
public void init() {
	service.run();
} }