SpringBoot 在项目启动之后执行自定义方法的两种方式小结

@Component

@Order ( 1 )  // 控制类执行的顺序越小越靠前

public class StartInitializer implements CommandLineRunner {

     @Override

     public void run(String... args) throws Exception {

         System.out.println( "项目启动,执行 CommandLineRunner 实现类的方法" );

     }

}

@Component

@Order ( 2 ) // 控制类执行的顺序越小越靠前

public class AppInitializer implements ApplicationRunner {

     @Override

     public void run(ApplicationArguments args) throws Exception {

         System.out.println( "项目启动,执行 ApplicationRunner 实现类的方法" );

     }

}

@Component //被spring容器管理

@Order ( 1 ) //如果多个自定义ApplicationRunner，用来标明执行顺序

public class MyApplicationRunner implements ApplicationRunner {

     @Override

     public void run(ApplicationArguments applicationArguments) throws Exception {

         System.out.println( "-------------->" + "项目启动，now=" + new Date());

         myTimer();

     }

     public static void myTimer(){

         Timer timer = new Timer();

         timer.schedule( new TimerTask() {

             @Override

             public void run() {

                 System.out.println( "------定时任务--------" );

             }

         }, 0 , 1000 );

     }

}