Spring boot spring启动TaskExecutor线程池大小

我正在使用SpringBoot2.0.2，并使用Async执行任务

我注册了一个TaskExecutor来控制线程池大小，如下所示：

public class ThreadConfig {
@Bean
public TaskExecutor threadPoolTaskExecutor() {

    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();

    executor.setCorePoolSize(2);
    executor.setMaxPoolSize(3);
    executor.setQueueCapacity(3);
    executor.setThreadNamePrefix("anniversary");

    executor.initialize();
    System.out.println("******* name "  + executor.getThreadNamePrefix());
    System.out.println("********** core pool size " + executor.getCorePoolSize());

    return executor;
}

}

但在运行过程中，创建了20多个线程

*********Thread[SimpleAsyncTaskExecutor-1,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-2,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-3,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-4,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-5,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-6,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-7,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-8,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-9,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-10,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-11,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-12,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-13,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********
**********Thread[SimpleAsyncTaskExecutor-14,5,com.abc.team1.project1.anniversary.AnniversaryApplication]*********

---

我找到了解决方案，我需要添加一个name属性，比如：@Bean（name=“taskExecutor”）public taskExecutor threadPoolTaskExecutor（）{“SimpleAsynctaskeExecutor-1,5”，第二个“5”是什么意思？