springboot+quartz

1.告诉springboot有个定时任务

@SpringBootApplication
@MapperScan("com.test.test.mapper")
@EnableScheduling
public class TestApplication {
    public static void main(String[] args) {
        SpringApplication.run(TestApplication.class, args);
    }
}

2.编写配置类

@Configuration
public class SchedulTask implements SchedulingConfigurer {
    @Autowired
    private CronMapper cronMapper;
    @Override
    public void configureTasks(ScheduledTaskRegistrar scheduledTaskRegistrar) {
        scheduledTaskRegistrar.addTriggerTask(
　　　　　　　　　　//这里是要执行的任务
                new Runnable() {
                    @Override
                    public void run() {
                        System.out.println(LocalDateTime.now());
                    }
                },
　　　　　　　　　　//配置定时器，这里是从数据库中取的cron表达式
                new Trigger() {
                    @Override
                    public Date nextExecutionTime(TriggerContext triggerContext) {
                        return new CronTrigger(cronMapper.getCron()).nextExecutionTime(triggerContext);
                    }
                }
        );
    }
}