CommandLineRunner接口可以實現任務(wu)的(de)(de)自動(dong)加(jia)載，當(dang)項目啟動(dong)完后，就會自動(dong)去執行CommandLineRunner接口里的(de)(de)run方法，你可以實現多(duo)個CommandLineRunner的(de)(de)實例，使用(yong)order來控制(zhi)執行的(de)(de)順(shun)序！

/**
 * 項目啟動后自動運行的代碼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里的數據");
    }
}

@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里的數據");

    }
}

程序在啟動之后(hou)，可(ke)以看到控制臺的日志(zhi)，它們被執(zhi)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里的數據
2020-05-26 10:25:07.437  INFO 27788 --- [           main] com.lind.basic.init.MyStartupRunner1     : MyStartupRunner2里的數據