spring boot: @EnableScheduling开启计划任务支持，@Scheduled计划任务声明

spring boot:

@EnableScheduling开启计划任务支持，

@Scheduled计划任务声明

 package ch2.scheduler2;

 //日期转换方式
 import java.text.SimpleDateFormat;
 import java.util.Date;

 //计划任务声明
 import org.springframework.scheduling.annotation.Scheduled;
 //spring组件注解
 import org.springframework.stereotype.Service;

 @Service
 public class SchedulerService {

     private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH::mm::ss");

     @Scheduled(fixedRate=)
     public void proFixCurrentTime()
     {
         System.out.println("每5秒钟执行一次：" + dateFormat.format(new Date()));
     }

     @Scheduled(cron="0 53 18 ? * *")
     public void cornCurrentTime()
     {
         System.out.println("自定执行时间: " + dateFormat.format(new Date()));
     }

 }

 package ch2.scheduler2;

 //引入spring配置注解
 import org.springframework.context.annotation.Configuration;
 //引入spring自动载入注解
 import org.springframework.context.annotation.ComponentScan;

 //计划任务声明类：开启计划任务声明
 import org.springframework.scheduling.annotation.EnableScheduling;

 //spring配置类声明
 @Configuration
 //自动引入当前包下的service,component....
 @ComponentScan("ch2.scheduler2")
 //开启对计划任务的支持
 @EnableScheduling
 public class TaskSchedulerConfig {

 }

 package ch2.scheduler2;
 //引入容器
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;

 public class Main {

     public static void main(String[] args)
     {

         AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(TaskSchedulerConfig.class);
         //SchedulerService schedulerService = context.getBean(SchedulerService.class);

     }

 }