SpringBoot定时器多种写法

对于SpringBoot的定时器使用相当简单

只需在启动类上加入注解@EnableScheduling

1.静态定时器

@Component
public class ScheduledDemo{
    //@Scheduled(cron = "0 0 0 * * ?")//每天凌晨执行一次
    @Scheduled(cron="0/10 * * * * ?")//每10秒执行一次
    public void timmer(){
    //写自己的业务逻辑
	System.out.println("定时任务");
    }
}        

OK简单好用

2.动态定时器

import org.springframework.scheduling.Trigger;
import org.springframework.scheduling.TriggerContext;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;
import org.springframework.scheduling.support.CronTrigger;
import org.springframework.stereotype.Component;

import java.util.Date;

@Component
public class TimeTrak implements SchedulingConfigurer {

    private String cron = "0/03 * * * * ?";

    @Override
    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {

        taskRegistrar.addTriggerTask(new Runnable() {
            @Override
            public void run() {
                //自己的业务逻辑
                System.out.println("定时执行");
            }
        },new Trigger(){
            @Override
            public Date nextExecutionTime(TriggerContext triggerContext) {
                return new CronTrigger(cron).nextExecutionTime(triggerContext);
            }
        });
    }

    public void setCron(String cron) {
        this.cron = cron;
    }
}

搞定