定时任务配置类

@Slf4j
@Configuration
@EnableScheduling
public class SchedulerConfig implements SchedulingConfigurer {

    @Override
    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
        taskRegistrar.setScheduler(myTaskScheduler());
    }

    @Bean
    public TaskScheduler myTaskScheduler() {
        // 允许同时执行多个定时任务
        final int poolSize = 3;
        ThreadPoolTaskScheduler taskScheduler = new ThreadPoolTaskScheduler();
        taskScheduler.setPoolSize(poolSize);
        log.info(">> 配置定时任务线程池,允许同时执行{}个定时任务", poolSize);
        return taskScheduler;
    }

}

使用定时任务

    @Async
    @Scheduled(cron = "* * * * * ?")
    public void hello() throws InterruptedException {
        log.info("hello...");
        Thread.sleep(3000);
    }