[spring] properties 여러개 사용하기

@SpringBootApplication
@PropertySources({
        @PropertySource("classpath:properties/private/database-config.properties"),
        @PropertySource("classpath:properties/private/mail-config.properties"),
        @PropertySource("classpath:properties/private/jwt-config.properties"),
        @PropertySource("classpath:properties/pagination-config.properties"),
        @PropertySource("classpath:properties/file-upload-config.properties")
})
public class PortfolioApplication {

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

}