SpringBoot开机启动的两种方式

1. 实现ApplicationRunner接口

// runner/BootApplicationRunner.java
@Component
//@Order(2)
public class BootApplicationRunner implements ApplicationRunner {
    private static final Logger logger = LoggerFactory.getLogger(BootApplicationRunner.class);

    @Override
    public void run(ApplicationArguments args) throws Exception {
        logger.info("This is ApplicationRunner....");
    }
}

2.实现CommandLineRunner接口

// runner/BootCommandLineRunner.java
@Component
//@Order(1)
public class BootCommandLineRunner implements CommandLineRunner {
    private static final Logger logger = LoggerFactory.getLogger(BootApplicationRunner.class);

    @Override
    public void run(String... args) throws Exception {
        logger.info("this is CommandLineRunner...");
    }
}

区别：传入的参数不同，ApplicationRunner的优先级高于CommandLineRunner。
可以使用@Order(1)注解改变优先级，数字越小，优先级越高