Timing task execution

Timed task: automatically execute the program at a fixed time (cron writes six digits, seven digits will report an error)

1. Add annotations to the startup class

@EnableScheduling//自动执行任务的注解

2. Create a scheduled task class

Use expressions in this class to set when to execute ( cron expression )

@Component
public class ScheduledTask {
    
    
    @Autowired
    private StatisticsDailyService statisticsDailyService;
    /**
     * 测试
     * 每天七点到二十三点每五秒执行一次
     */
//    @Scheduled(cron = "0/5 * * * * ?")
//    public void task1() {
    
    
//        System.out.println("*********++++++++++++*****执行了");
//    }
    /**
     * 每天凌晨1点执行定时
     */
    @Scheduled(cron = "0 0 1 * * ?")
    public void task2() {
    
    
        //获取上一天的日期
        String day = DateUtil.formatDate(DateUtil.addDays(new Date(),-1));
        statisticsDailyService.registerCount(day);
    }
}

3. cron expression generation

https://cron.qqe2.com/