【java】主线程等待子线程执行结束后再执行，线程池

1. private void test() {
2. Long startTime = System.currentTimeMillis();
3. ExecutorService pool = Executors.newFixedThreadPool(10);
4. for (int i = 0; i < 30; i++) {
5.             pool.execute(new Runnable() {
6. @Override
7. public void run() {
8.                     logger.info("查询数据");
9.                     logger.info("写入excel");
10.                 }
11.             });
12.         }
13.         pool.shutdown();
14. 
15. while (true) {
16. if (EXECUTOR_SERVICE.isTerminated()) {
17.                 logger.info("线程池关闭，子线程执行结束,耗时：{}ms", (System.currentTimeMillis() - startTime));
18. break;
19.             }
20. try {
21.                 Thread.sleep(3000);
22.             } catch (Exception e) {
23.                 logger.error("线程被意外中断了，导出失败", e);
24.             }
25.         }
26. 
27.         logger.info("excel文件进行压缩");
28.         logger.info("压缩文件上传文件服务器");
29. 
30.     }