解决定时任务@Scheduled没有准时执行的原因及分析

@Configuration
public class ScheduleConfig implements SchedulinGConfigurer {
 
    @Override
    public void configureTasks(ScheduledTaskReGIStrar taskRegistrar) {
        Method[] methods = BatchProperties.Job.class.getMethods();
        int defaultPoolSize = 10;
        int corePoolSize = 0;
        if (methods != null && methods.length > 0) {
            for (Method method : methods) {
                Scheduled annotation = method.getAnnotation(Scheduled.class);
                if (annotation != null) {
                    corePoolSize++;
                }
            }
            if (defaultPoolSize > corePoolSize)
                corePoolSize = defaultPoolSize;
        }
        taskRegistrar.setScheduler(Executors.newScheduledThreadPool(corePoolSize));
 
    }
}

@EnableScheduling // 开启定时任务

    @Scheduled(cron = "0/2 * * * * *")
    public void test() throws InterruptedException {
        // 经过测试,使用cron表达式,定时任务第二次会等待第一次执行完毕再开始!
        Thread.sleep(5000L);
        log.info("定时任务测试cron:" + new SimpleDateFORMat("yyyy-MM-dd HH:mm:ss").format(new Date()));
    }

 
    @Scheduled(fixedDelay = 2000L)
    public void test2() throws InterruptedException {
        Thread.sleep(5000L);
        log.info("定时任务测试fixedDelay:" + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
    }

 
    @Scheduled(fixedRate = 2000L)
    public void test3() throws InterruptedException {
        Thread.sleep(5000L);
        log.info("定时任务测试fixedRate:" + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
    }

@Configuration
@EnableAsync
public class ScheduleConfig {
    @Bean
    public TaskScheduler taskScheduler() {
        ThreadPoolTaskScheduler taskScheduler = new ThreadPoolTaskScheduler();
        taskScheduler.setPoolSize(50); // 设置线程池大小
        return taskScheduler;
    }
}