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

1 package ch2.scheduler2;
2
3 //日期转换方式
4 import java.text.SimpleDateFormat;
5 import java.util.Date;
6
7 //计划任务声明
8 import org.springframework.scheduling.annotation.Scheduled;
9 //spring组件注解
10 import org.springframework.stereotype.Service;
11
12 @Service
13 public class SchedulerService {
14
15     private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH::mm::ss");
16
17     @Scheduled(fixedRate=5000)
18     public void proFixCurrentTime()
19     {
20         System.out.println("每5秒钟执行一次：" + dateFormat.format(new Date()));
21     }
22
23     @Scheduled(cron="0 53 18 ? * *")
24     public void cornCurrentTime()
25     {
26         System.out.println("自定执行时间: " + dateFormat.format(new Date()));
27     }
28
29
30 }

1 package ch2.scheduler2;
2
3 //引入spring配置注解
4 import org.springframework.context.annotation.Configuration;
5 //引入spring自动载入注解
6 import org.springframework.context.annotation.ComponentScan;
7
8 //计划任务声明类：开启计划任务声明
9 import org.springframework.scheduling.annotation.EnableScheduling;
10
11 //spring配置类声明
12 @Configuration
13 //自动引入当前包下的service,component....
14 @ComponentScan("ch2.scheduler2")
15 //开启对计划任务的支持
16 @EnableScheduling
17 public class TaskSchedulerConfig {
18
19 }

1 package ch2.scheduler2;
2 //引入容器
3 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
4
5 public class Main {
6
7     public static void main(String[] args)
8     {
9
10         AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(TaskSchedulerConfig.class);
11         //SchedulerService schedulerService = context.getBean(SchedulerService.class);
12
13     }
14
15 }