SpringBoot开启启动

开启掘金成长之旅！这是我参与「掘金日新计划 · 12 月更文挑战」的第31天，点击查看活动详情

1.新建Runner包

2.新增BootApplicationRunner和BootCommandLineRunner类

BootApplicationRunner类：

@Slf4j
@Component
public class BootApplicationRunner implements ApplicationRunner {
    @Override
    public void run(ApplicationArguments args) throws Exception {
        log.info("this is BootApplicationRunner");
    }
}

BootCommandLineRunner类：

@Slf4j
@Component
public class BootCommandLineRunner implements CommandLineRunner {
    @Override
    public void run(String... args) throws Exception {
      log.info("this is commandLineRunner");
    }
}

代码说明：

• @Component：设置成组件

3.启动项目

可以看到，BootApplicatioin优先级高于BootCommandLineRunner

4.设置优先级

代码说明：

• @Order(1):order值越小，越早执行