@SpringBootApplication and CommandLineRunner

Found an interesting spring annotation, looks handy for some simple tests

Code example from the reference [1]:

package hello;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.stereotype.Component;

@SpringBootApplication
public class Application {

private static final Logger log = LoggerFactory.getLogger(Application.class);

@Component
static class Runner implements CommandLineRunner {
@Autowired
private BookRepository bookRepository;

@Override
public void run(String... args) throws Exception {
log.info(".... Fetching books");
log.info("isbn-1234 -->" + bookRepository.getByIsbn("isbn-1234"));
log.info("isbn-1234 -->" + bookRepository.getByIsbn("isbn-1234"));
log.info("isbn-1234 -->" + bookRepository.getByIsbn("isbn-1234"));
}
}

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

Reference:

[1] https://spring.io/guides/gs/caching/