spring boot task實現(xiàn)動態(tài)創(chuàng)建定時任務(wù)的方法

package org.cent.demo.scanner.schedule;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.Trigger;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;
import org.springframework.scheduling.support.CronTrigger;

import java.util.Arrays;
import java.util.List;

/**
 * @author: cent
 * @email: 292462859@qq.com
 * @date: 2019/1/16.
 * @description:
 */
@Configuration
@EnableScheduling
@Slf4j
public class DynamicSchedule implements SchedulingConfigurer {

 /**
 * 測試數(shù)據(jù)，實際可從數(shù)據(jù)庫獲取
 */
 private List<Task> tasks = Arrays.asList(
  new Task(1, "任務(wù)1", "*/30 * * * * *"),
  new Task(2, "任務(wù)2", "*/30 * * * * *"),
  new Task(3, "任務(wù)3", "*/30 * * * * *"),
  new Task(4, "任務(wù)4", "*/30 * * * * *"),
  new Task(5, "任務(wù)5", "*/30 * * * * *"),
  new Task(6, "任務(wù)6", "*/30 * * * * *"),
  new Task(7, "任務(wù)7", "*/30 * * * * *"),
  new Task(8, "任務(wù)8", "*/30 * * * * *"),
  new Task(9, "任務(wù)9", "*/30 * * * * *"),
  new Task(10, "任務(wù)10", "*/30 * * * * *")
 );

 @Override
 public void configureTasks(ScheduledTaskRegistrar scheduledTaskRegistrar) {
 tasks.forEach(task -> {
  //任務(wù)執(zhí)行線程
  Runnable runnable = () -> log.info("execute task {}", task.getId());

  //任務(wù)觸發(fā)器
  Trigger trigger = triggerContext -> {
  //獲取定時觸發(fā)器，這里可以每次從數(shù)據(jù)庫獲取最新記錄，更新觸發(fā)器，實現(xiàn)定時間隔的動態(tài)調(diào)整
  CronTrigger cronTrigger = new CronTrigger(task.getCron());
  return cronTrigger.nextExecutionTime(triggerContext);
  };

  //注冊任務(wù)
  scheduledTaskRegistrar.addTriggerTask(runnable, trigger);
 });

 }

 @Data
 @AllArgsConstructor
 static class Task {
 /**
  * 主鍵ID
  */
 private int id;
 /**
  * 任務(wù)名稱
  */
 private String name;
 /**
  * cron表達(dá)式
  */
 private String cron;
 }
}