What is IOC MessageSource?

MessageSource
Interface providing internationalization(i18n) functionality.

If use Spring boot, can use without any setting.

First of all, create file like below.

base

Then just use code like below.

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@Component
public class MessageRunner implements ApplicationRunner {

    @Autowired
    MessageSource messageSource;

    @Override
    public void run(ApplicationArguments args) throws Exception {
        System.out.println(messageSource.getMessage("greeting", new String[]{"Ewan"}, Locale.KOREA));
        System.out.println(messageSource.getMessage("greeting", new String[]{"Ewan"}, Locale.getDefault()));
    }
}