在spring boot中如何使用@Async实现异步调用

@Componentpublic class Task {  //定义一个随机对象.  public static Random random =new Random();  @Async //加入"异步调用"注解  public void doTaskOne() throws InterruptedException {    System.out.println("开始执行任务一");    long start = System.currentTimeMillis();    Thread.sleep(random.nextInt(10000));    long end = System.currentTimeMillis();    System.out.println("完成任务一，耗时：" + (end - start) + "毫秒");  }  @Async  public void doTaskTwo() throws InterruptedException {    System.out.println("开始执行任务二");    long start = System.currentTimeMillis();    Thread.sleep(random.nextInt(10000));    long end = System.currentTimeMillis();    System.out.println("完成任务二，耗时：" + (end - start) + "毫秒");  }  @Async  public void doTaaskThree() throws InterruptedException {    System.out.println("开始执行任务三");    long start = System.currentTimeMillis();    Thread.sleep(random.nextInt(10000));    long end = System.currentTimeMillis();    System.out.println("完成任务三，耗时：" + (end - start) + "毫秒");  }}