Spring动态创建定时任务

创建config

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.stereotype.Component;

@Component
@Slf4j
public class RecordScheduleTask {

    @Bean
    public ThreadPoolTaskScheduler threadPoolTaskScheduler() {
        log.info("----request threadPoolTaskScheduler, 创建定时任务调度线程池 !----");
        ThreadPoolTaskScheduler threadPoolTaskScheduler = new ThreadPoolTaskScheduler();
        threadPoolTaskScheduler.setPoolSize(64); //线程池大小
        threadPoolTaskScheduler.setThreadNamePrefix("taskSchedulerExecutor-");
        threadPoolTaskScheduler.setWaitForTasksToCompleteOnShutdown(true);
        threadPoolTaskScheduler.setAwaitTerminationSeconds(60);
        return threadPoolTaskScheduler;
    }
}

插入定时任务

...
@Resource
private ThreadPoolTaskScheduler threadPoolTaskScheduler;

private Map<Long, List<ScheduledFuture>> scheduledFutureMap = new ConcurrentHashMap<>();

public void createScheduleTask(ScheduleRecordExeModel exeModel) {
        List<ScheduledFuture> futureList = new ArrayList<>();

        exeModel.getCronList().forEach(cron -> {
            ScheduledFuture scheduledFuture = threadPoolTaskScheduler.schedule(() -> {
                        executeRecordBySystem(exeModel.getRecordId());
                    },
                    (triggerContext) -> {
                        CronTrigger cronTrigger = new CronTrigger(cron);
                        return cronTrigger.nextExecutionTime(triggerContext);
                    });
            futureList.add(scheduledFuture);
        });

        if (!CollectionUtils.isEmpty(futureList)) {
            scheduledFutureMap.put(exeModel.getRecordId(), futureList); //存储定时任务的map,不是必须的
        }
    }

服务启动时自动创建定时任务

 @PostConstruct //这个注解代表在服务启动的时候执行
    private void initScheduleTask(){
        List<xxx> scheduleRecords = xxx;
        scheduleRecords.forEach(record ->{
            ScheduleRecordExeModel exeModel = xxx;
            createScheduleTask(exeModel);
        });
    }