依赖配置pom.xml

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.3.0.RELEASE</version>
</parent>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

动态配置ScheduleDynamicTask

@Configuration
@EnableScheduling
public class ScheduleDynamicTask implements SchedulingConfigurer, AsyncConfigurer  {
    // 日志工具
    private final static Logger LOGGER = LoggerFactory.getLogger(ScheduleDynamicTask.class);
    
    @Override
    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
        LOGGER.info("configureTasks start ... ");
        // 设置并行定时任务线程池，最多三个任务并行
        TaskScheduler taskScheduler = taskScheduler();
        taskRegistrar.setTaskScheduler(taskScheduler);
        
        // 
        String cron = "0/30 * * * * ?";
        
        // 注册定时任务
        taskRegistrar.addTriggerTask(new Runnable() {
            @Override
            public void run() {
                LOGGER.info("Runnable : {}", System.currentTimeMillis());
            }
        }, new CronTrigger(cron));
        LOGGER.info("configureTasks end ... ");
    }
    
    /** 定时任务多线程处理 */
    @Bean(destroyMethod = "shutdown")
    public ThreadPoolTaskScheduler taskScheduler() {
        ThreadPoolTaskScheduler scheduler = new ThreadPoolTaskScheduler();
        scheduler.setPoolSize(3);
        scheduler.setThreadNamePrefix("DynamicTask-");
        scheduler.setAwaitTerminationSeconds(60);
        scheduler.setWaitForTasksToCompleteOnShutdown(true);
        return scheduler;
    }
}

启动类Application

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        new SpringApplicationBuilder(Application.class)
            .bannerMode(Banner.Mode.OFF)
            .build()
            .run(args);
    }
}

定时任务日志

输出示例：

2021-11-25 12:06:00.001  INFO 13828 --- [  DynamicTask-1] com.demo.ScheduleDynamicTask             : Runnable : 1637813160001
2021-11-25 12:06:30.003  INFO 13828 --- [  DynamicTask-1] com.demo.ScheduleDynamicTask             : Runnable : 1637813190003
2021-11-25 12:07:00.003  INFO 13828 --- [  DynamicTask-2] com.demo.ScheduleDynamicTask             : Runnable : 1637813220003
2021-11-25 12:07:30.003  INFO 13828 --- [  DynamicTask-1] com.demo.ScheduleDynamicTask             : Runnable : 1637813250003
2021-11-25 12:08:00.002  INFO 13828 --- [  DynamicTask-1] com.demo.ScheduleDynamicTask             : Runnable : 1637813280002
2021-11-25 12:08:30.003  INFO 13828 --- [  DynamicTask-1] com.demo.ScheduleDynamicTask             : Runnable : 1637813310003
2021-11-25 12:09:00.002  INFO 13828 --- [  DynamicTask-1] com.demo.ScheduleDynamicTask             : Runnable : 1637813340002
2021-11-25 12:09:30.002  INFO 13828 --- [  DynamicTask-2] com.demo.ScheduleDynamicTask             : Runnable : 1637813370002