spring boot CommandLineRunner自动任务加载 springboot CommandLineRunner接口实现自动任务加载功能

CommandLineRunner接口可以实现任务的自动加载，当项目启动完后，就会自动去执行CommandLineRunner接口里的run方法，你可以实现多个CommandLineRunner的实例，使用order来控制执行的顺序！

/**
 * 项目启动后自动运行的代码CommandLineRunner
 */
@Component
@Order(1)
public class MyStartupRunner1 implements CommandLineRunner {
  private Logger logger = LoggerFactory.getLogger(MyStartupRunner1.class);
  @Override
  public void run(String... args) throws Exception {
    logger.info("MyStartupRunner1里的数据");
  }
}
@Component
@Order(2)
public class MyStartupRunner2 implements CommandLineRunner {
  private Logger logger = LoggerFactory.getLogger(MyStartupRunner1.class);
  @Override
  public void run(String... args) throws Exception {
    logger.info("MyStartupRunner2里的数据");
  }
}

程序在启动之后，可以看到控制台的日志，它们被执行了。

2020-05-26 10:25:07.400  INFO 27788 --- [           main] .d.s.w.r.o.CachingOperationNameGenerator : Generating unique operation named: getUsingGET_1
2020-05-26 10:25:07.433  INFO 27788 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2020-05-26 10:25:07.435  INFO 27788 --- [           main] com.lind.basic.BasicApplication          : Started BasicApplication in 6.967 seconds (JVM running for 8.118)
2020-05-26 10:25:07.437  INFO 27788 --- [           main] com.lind.basic.init.MyStartupRunner1     : MyStartupRunner1里的数据
2020-05-26 10:25:07.437  INFO 27788 --- [           main] com.lind.basic.init.MyStartupRunner1     : MyStartupRunner2里的数据

总结