1.源码克隆：git clone https://github.com/spring-guides/gs-scheduling-tasks.git
2.包含两个项目initial和complete，initial可以根据文档练习完善，complete是完整项目
3.功能描述：构建应用程序，使用 Spring 的注释 @Scheduled 实现每五秒打印一次当前时间

源码分析

1.POM依赖
<dependencies>
	<!--https://blog.csdn.net/tongxin_tongmeng/article/details/128413623-->
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter</artifactId>
	</dependency>
	<!--https://blog.csdn.net/tongxin_tongmeng/article/details/128413783-->
	<dependency>
		<groupId>org.awaitility</groupId>
		<artifactId>awaitility</artifactId>
		<version>4.2.0</version>
		<scope>test</scope>
	</dependency>
	<!--https://blog.csdn.net/tongxin_tongmeng/article/details/128399703-->
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-test</artifactId>
		<scope>test</scope>
	</dependency>
</dependencies>

2.入口类
// https://blog.csdn.net/tongxin_tongmeng/article/details/128401278
@SpringBootApplication
// https://blog.csdn.net/tongxin_tongmeng/article/details/128414367
@EnableScheduling
public class SchedulingTasksApplication {

	public static void main(String[] args) {
		SpringApplication.run(SchedulingTasksApplication.class);
	}
}

3.任务类
@Component
public class ScheduledTasks {

	private static final Logger log = LoggerFactory.getLogger(ScheduledTasks.class);

	private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");

	@Scheduled(fixedRate = 5000)
	public void reportCurrentTime() {
		log.info("The time is now {}", dateFormat.format(new Date()));
	}
}