spring ThreadPoolTaskExecutor 实现线程阻塞

需求：我们知道java的thread类有join发法可让主线程阻塞直到子线程执行完毕，那么如何ThreadPoolTaskExecutor是否有功能呢？

我第一想法是ThreadPoolTaskExecutor是否有对应功能接口，找了下没找到，如果有技术大大知道的欢迎补充

既然没有那就自己实现一个，
有CountDownLatch可用，一个倒数计算器，只需在子线程每次只需完成后将计算器减一，CountDownLatch就可以阻塞当前线程，直到倒数计数器倒数到0 。
线程类

import java.util.List;import java.util.concurrent.CountDownLatch;public class TreadCase implements  Runnable {    private List<Integer> returnIds;    private CountDownLatch countDownLatch;    public TreadCase(List<Integer> returnIds, CountDownLatch countDownLatch) {        this.returnIds = returnIds;        this.countDownLatch = countDownLatch;    }    public void run() {        for (Integer returnId :returnIds) {            System.out.println("富友代扣线程类启动 id="+returnId);            try {                Thread.sleep(100);            } catch (InterruptedException e) {                e.printStackTrace();            }            System.out.println("富友代扣线程类关闭 ");        }        countDownLatch.countDown();        System.out.println("countDownLatch="+countDownLatch.getCount());    }}

测试类

import java.util.ArrayList;import java.util.Arrays;import java.util.Date;import java.util.List;import java.util.concurrent.CountDownLatch;import org.apache.commons.collections.CollectionUtils;import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;public class TestCase {    private static ThreadPoolTaskExecutor threadPoolTest = new ThreadPoolTaskExecutor();    public static void main(String[] args) {        threadPoolTest.initialize();        List<List<Integer>> idList = new ArrayList<List<Integer>>();        idList.add(new ArrayList<Integer>(Arrays.asList(1,2,3)));        idList.add(new ArrayList<Integer>(Arrays.asList(4,5)));        // 创建一个初始值为2的倒数计数器        CountDownLatch countDownLatch = new CountDownLatch(idList.size());        System.out.println("自动扣款多线开启" + new Date());        for (List<Integer> idListSub : idList) {            if (CollectionUtils.isEmpty(idListSub)) continue;            TreadCase thread = new TreadCase(idListSub, countDownLatch);            threadPoolTest.execute(thread);        }        // 阻塞当前线程，直到倒数计数器倒数到0        try {            countDownLatch.await();        } catch (Exception e) {            e.printStackTrace();        }        System.out.println("自动扣款多线程结束" + new Date());        // threadPool.destroy();    }}