Spring Boot实现动态更新任务的方法

<dependency>
 <groupId>org.quartz-scheduler</groupId>
 <artifactId>quartz</artifactId>
 <version>2.2.3</version>
</dependency>

cron:
 pattern: 0/1 * * * * ?

public class DynamicScheduledTask implements SchedulingConfigurer {
 @Value("${cron.pattern}")
 public String pattern;
 public void setCron(String cron) {
 this.pattern = cron;
 }
 @Override
 public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
 taskRegistrar.addTriggerTask(new Runnable() {
  @Override
  public void run() {
  doBiz();
  }
 }, new Trigger() {
  @Override
  public Date nextExecutionTime(TriggerContext triggerContext) {
  // 定时任务触发，可修改定时任务的执行周期
  CronTrigger trigger = new CronTrigger(pattern);
  Date nextExecDate = trigger.nextExecutionTime(triggerContext);
  return nextExecDate;
  }
 });
 }
 public void doBiz() {
 // do your biz
 System.out.println("do biz...");
 }
}

@Component
public class UserDynamicJob extends DynamicScheduledTask {
 @Autowired
 IUserService userService;
 @Override
 public void doBiz() {
 Map<String, Object> params = new HashMap<>();
 try {
  User user = userService.selectOne(params);
  System.out.println(user);
 } catch (DataNotFoundException e) {
  e.printStackTrace();
 }
 }
}

@PostMapping(value = "/cron")
 public String changeDynamicCron(String cron) {
 userDynamicJob.setCron(cron);
 return "Success";
 }