一、java代码模拟并发
1.1、一次并发
单次并发测试
1、使用CountDownLatch
等待一个或多个线程一起执行
详细参看：007-多线程-锁-JUC锁-CountDownLatch-闭锁【允许一个或多个线程，等待其他一组线程完成操作，再继续执行】
示例代码
@Test public void poolCountDownLatch() throws Exception { int parrelnum=100; //所有线程阻塞，然后统一开始 CountDownLatch begin = new CountDownLatch(1); //主线程阻塞，直到所有分线程执行完毕 CountDownLatch end = new CountDownLatch(parrelnum); List<Future<String>> futureList = new ArrayList<>(); ExecutorService fixedThreadPool = Executors.newFixedThreadPool(parrelnum); for (int i = 0; i < parrelnum; i++) { Future<String> submit = fixedThreadPool.submit(() -> { try { //begin 阻塞所有线程 begin.await(); System.out.println("======-----------------------------"+ LocalDateTime.now()); // System.out.println("======-----------------------------"+ LocalDateTime.now() // +":"+Thread.currentThread().getName() // +"；守护线程："+Thread.currentThread().isDaemon()); Thread.sleep(new Random().nextInt(2000)); } catch (InterruptedException e) { e.printStackTrace(); } finally { //end 执行完代码减一 end.countDown(); } return "ok:"+LocalDateTime.now(); }); futureList.add(submit); } fixedThreadPool.shutdown(); try { System.out.println(LocalDateTime.now()+":"+"1秒后统一开始"); Thread.sleep(1000); //begin 减一 = 0 唤醒 阻塞的所有线程 begin.countDown(); for (Future<String> future : futureList) { System.out.println(future.get()); } //end 等待所有代码执行完毕 end.await(); System.out.println(LocalDateTime.now()+":"+"全部结束"); } catch (InterruptedException e) { e.printStackTrace(); } }
输出：
2019-08-02T22:58:23.762:1秒后统一开始 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.765 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.768 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.768 ======-----------------------------2019-08-02T22:58:24.768 ======-----------------------------2019-08-02T22:58:24.768 ======-----------------------------2019-08-02T22:58:24.768 ======-----------------------------2019-08-02T22:58:24.768 ======-----------------------------2019-08-02T22:58:24.765 ======-----------------------------2019-08-02T22:58:24.765 ======-----------------------------2019-08-02T22:58:24.765 ======-----------------------------2019-08-02T22:58:24.765 ======-----------------------------2019-08-02T22:58:24.765 ======-----------------------------2019-08-02T22:58:24.765 ======-----------------------------2019-08-02T22:58:24.765 ======-----------------------------2019-08-02T22:58:24.765 ======-----------------------------2019-08-02T22:58:24.765 ======-----------------------------2019-08-02T22:58:24.764 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.773 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.770 ======-----------------------------2019-08-02T22:58:24.769 ======-----------------------------2019-08-02T22:58:24.769 ok:2019-08-02T22:58:24.924 ok:2019-08-02T22:58:25.803 ok:2019-08-02T22:58:26.473 ok:2019-08-02T22:58:25.947 ok:2019-08-02T22:58:25.891 ok:2019-08-02T22:58:25.859 ok:2019-08-02T22:58:25.457 ok:2019-08-02T22:58:26.443 ok:2019-08-02T22:58:25.457 ok:2019-08-02T22:58:26.157 ok:2019-08-02T22:58:25.003 ok:2019-08-02T22:58:24.979 ok:2019-08-02T22:58:25.698 ok:2019-08-02T22:58:25.084 ok:2019-08-02T22:58:25.102 ok:2019-08-02T22:58:26.083 ok:2019-08-02T22:58:26.377 ok:2019-08-02T22:58:25.669 ok:2019-08-02T22:58:26.360 ok:2019-08-02T22:58:26.640 ok:2019-08-02T22:58:26.321 ok:2019-08-02T22:58:26.087 ok:2019-08-02T22:58:26.226 ok:2019-08-02T22:58:24.833 ok:2019-08-02T22:58:26.736 ok:2019-08-02T22:58:25.497 ok:2019-08-02T22:58:25.374 ok:2019-08-02T22:58:26.377 ok:2019-08-02T22:58:26.764 ok:2019-08-02T22:58:24.889 ok:2019-08-02T22:58:26.419 ok:2019-08-02T22:58:25.174 ok:2019-08-02T22:58:25.447 ok:2019-08-02T22:58:24.957 ok:2019-08-02T22:58:24.817 ok:2019-08-02T22:58:24.809 ok:2019-08-02T22:58:26.764 ok:2019-08-02T22:58:26.035 ok:2019-08-02T22:58:25.855 ok:2019-08-02T22:58:26.310 ok:2019-08-02T22:58:26.412 ok:2019-08-02T22:58:26.210 ok:2019-08-02T22:58:25.569 ok:2019-08-02T22:58:25.039 ok:2019-08-02T22:58:25.846 ok:2019-08-02T22:58:26.328 ok:2019-08-02T22:58:24.802 ok:2019-08-02T22:58:25.970 ok:2019-08-02T22:58:25.970 ok:2019-08-02T22:58:25.475 ok:2019-08-02T22:58:26.147 ok:2019-08-02T22:58:25.937 ok:2019-08-02T22:58:26.525 ok:2019-08-02T22:58:25.527 ok:2019-08-02T22:58:24.871 ok:2019-08-02T22:58:26.246 ok:2019-08-02T22:58:24.786 ok:2019-08-02T22:58:25.484 ok:2019-08-02T22:58:25.871 ok:2019-08-02T22:58:25.240 ok:2019-08-02T22:58:24.899 ok:2019-08-02T22:58:24.889 ok:2019-08-02T22:58:25.559 ok:2019-08-02T22:58:24.856 ok:2019-08-02T22:58:24.783 ok:2019-08-02T22:58:25.257 ok:2019-08-02T22:58:26.394 ok:2019-08-02T22:58:26.471 ok:2019-08-02T22:58:25.957 ok:2019-08-02T22:58:25.930 ok:2019-08-02T22:58:25.316 ok:2019-08-02T22:58:25.323 ok:2019-08-02T22:58:26.381 ok:2019-08-02T22:58:26.552 ok:2019-08-02T22:58:26.577 ok:2019-08-02T22:58:25.369 ok:2019-08-02T22:58:26.157 ok:2019-08-02T22:58:25.937 ok:2019-08-02T22:58:26.030 ok:2019-08-02T22:58:26.693 ok:2019-08-02T22:58:24.982 ok:2019-08-02T22:58:25.511 ok:2019-08-02T22:58:25.042 ok:2019-08-02T22:58:26.307 ok:2019-08-02T22:58:25.769 ok:2019-08-02T22:58:25.710 ok:2019-08-02T22:58:26.699 ok:2019-08-02T22:58:26.047 ok:2019-08-02T22:58:26.056 ok:2019-08-02T22:58:24.822 ok:2019-08-02T22:58:26.204 ok:2019-08-02T22:58:24.803 ok:2019-08-02T22:58:26.257 ok:2019-08-02T22:58:25.701 ok:2019-08-02T22:58:24.964 ok:2019-08-02T22:58:25.678 ok:2019-08-02T22:58:24.858 ok:2019-08-02T22:58:25.741 ok:2019-08-02T22:58:26.153 ok:2019-08-02T22:58:26.023 2019-08-02T22:58:26.766:全部结束
可以看到 100个线程并发，同时并发，64-73毫秒之间 即 9毫秒
2、不使用CountDownLatch
@Test public void poolNoCountDownLatch() throws Exception { int parrelnum=100; List<Future<String>> futureList = new ArrayList<>(); ExecutorService fixedThreadPool = Executors.newFixedThreadPool(parrelnum); for (int i = 0; i < parrelnum; i++) { Future<String> submit = fixedThreadPool.submit(() -> { try { System.out.println("======-----------------------------"+ LocalDateTime.now()); // System.out.println("======-----------------------------"+ LocalDateTime.now() // +":"+Thread.currentThread().getName() // +"；守护线程："+Thread.currentThread().isDaemon()); Thread.sleep(new Random().nextInt(2000)); } catch (InterruptedException e) { e.printStackTrace(); } return "ok:"+LocalDateTime.now(); }); futureList.add(submit); } fixedThreadPool.shutdown(); try { System.out.println(LocalDateTime.now()+":"+"1秒后统一开始"); Thread.sleep(1000); for (Future<String> future : futureList) { System.out.println(future.get()); } System.out.println(LocalDateTime.now()+":"+"全部结束"); } catch (InterruptedException e) { e.printStackTrace(); } }
可以看到 100个线程并发，同时并发，91-96毫秒之间 即 5毫秒
com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 -junit4 com.github.bjlhx15.common.base.thread.spring.controller.ThreadPoolExecutorParrelTest,poolNoCountDownLatch ======-----------------------------2019-08-02T23:02:42.491 ======-----------------------------2019-08-02T23:02:42.491 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.491 ======-----------------------------2019-08-02T23:02:42.491 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.491 ======-----------------------------2019-08-02T23:02:42.491 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.491 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.491 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.492 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.494 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======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.494 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.494 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.494 ======-----------------------------2019-08-02T23:02:42.494 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.493 2019-08-02T23:02:42.493:1秒后统一开始 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.493 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.496 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ======-----------------------------2019-08-02T23:02:42.495 ok:2019-08-02T23:02:43.998 ok:2019-08-02T23:02:43.772 ok:2019-08-02T23:02:42.961 ok:2019-08-02T23:02:42.623 ok:2019-08-02T23:02:44.241 ok:2019-08-02T23:02:43.478 ok:2019-08-02T23:02:44.477 ok:2019-08-02T23:02:43.033 ok:2019-08-02T23:02:43.533 ok:2019-08-02T23:02:44.004 ok:2019-08-02T23:02:42.856 ok:2019-08-02T23:02:44.217 ok:2019-08-02T23:02:44.190 ok:2019-08-02T23:02:44.011 ok:2019-08-02T23:02:42.603 ok:2019-08-02T23:02:44.448 ok:2019-08-02T23:02:44.017 ok:2019-08-02T23:02:42.833 ok:2019-08-02T23:02:42.808 ok:2019-08-02T23:02:44.479 ok:2019-08-02T23:02:43.207 ok:2019-08-02T23:02:44.190 ok:2019-08-02T23:02:42.677 ok:2019-08-02T23:02:43.624 ok:2019-08-02T23:02:42.848 ok:2019-08-02T23:02:44.161 ok:2019-08-02T23:02:43.904 ok:2019-08-02T23:02:44.439 ok:2019-08-02T23:02:44.361 ok:2019-08-02T23:02:43.598 ok:2019-08-02T23:02:43.777 ok:2019-08-02T23:02:43.153 ok:2019-08-02T23:02:42.922 ok:2019-08-02T23:02:43.466 ok:2019-08-02T23:02:43.689 ok:2019-08-02T23:02:43.881 ok:2019-08-02T23:02:42.784 ok:2019-08-02T23:02:43.598 ok:2019-08-02T23:02:42.691 ok:2019-08-02T23:02:43.671 ok:2019-08-02T23:02:43.920 ok:2019-08-02T23:02:43.833 ok:2019-08-02T23:02:44.415 ok:2019-08-02T23:02:43.019 ok:2019-08-02T23:02:44.244 ok:2019-08-02T23:02:42.963 ok:2019-08-02T23:02:44.361 ok:2019-08-02T23:02:43.689 ok:2019-08-02T23:02:43.620 ok:2019-08-02T23:02:42.753 ok:2019-08-02T23:02:43.055 ok:2019-08-02T23:02:43.259 ok:2019-08-02T23:02:43.837 ok:2019-08-02T23:02:44.233 ok:2019-08-02T23:02:43.483 ok:2019-08-02T23:02:42.753 ok:2019-08-02T23:02:43.823 ok:2019-08-02T23:02:44.448 ok:2019-08-02T23:02:44.361 ok:2019-08-02T23:02:43.727 ok:2019-08-02T23:02:42.641 ok:2019-08-02T23:02:43.648 ok:2019-08-02T23:02:43.282 ok:2019-08-02T23:02:42.522 ok:2019-08-02T23:02:44.394 ok:2019-08-02T23:02:43.037 ok:2019-08-02T23:02:44.366 ok:2019-08-02T23:02:44.093 ok:2019-08-02T23:02:43.494 ok:2019-08-02T23:02:44.120 ok:2019-08-02T23:02:44.283 ok:2019-08-02T23:02:43.917 ok:2019-08-02T23:02:44.093 ok:2019-08-02T23:02:43.524 ok:2019-08-02T23:02:42.593 ok:2019-08-02T23:02:43.628 ok:2019-08-02T23:02:42.544 ok:2019-08-02T23:02:43.279 ok:2019-08-02T23:02:44.182 ok:2019-08-02T23:02:42.878 ok:2019-08-02T23:02:44.177 ok:2019-08-02T23:02:43.371 ok:2019-08-02T23:02:42.538 ok:2019-08-02T23:02:43.783 ok:2019-08-02T23:02:43.515 ok:2019-08-02T23:02:43.616 ok:2019-08-02T23:02:43.241 ok:2019-08-02T23:02:43.366 ok:2019-08-02T23:02:42.731 ok:2019-08-02T23:02:43.844 ok:2019-08-02T23:02:43.423 ok:2019-08-02T23:02:43.698 ok:2019-08-02T23:02:43.689 ok:2019-08-02T23:02:43.733 ok:2019-08-02T23:02:43.459 ok:2019-08-02T23:02:43.546 ok:2019-08-02T23:02:44.067 ok:2019-08-02T23:02:44.494 ok:2019-08-02T23:02:44.054 ok:2019-08-02T23:02:43.923 2019-08-02T23:02:44.495:全部结束 Process finished with exit code 0
3、小结
故针对上述一次并发不推荐使用CountDownLatch增加程序复杂度
1.2、循环并发
如，15个线程，每5个一组循环并发测试
@Test public void poolCyclicBarrier() throws Exception { int parrelnum = 5; //所有线程阻塞，然后统一开始 CyclicBarrier cyclicBarrier = new CyclicBarrier(parrelnum); List<Future<String>> futureList = new ArrayList<>(); ExecutorService fixedThreadPool = Executors.newFixedThreadPool(parrelnum); for (int i = 0; i < 15; i++) { Future<String> submit = fixedThreadPool.submit(() -> { try { Thread.sleep(new Random().nextInt(2000)); //begin 阻塞所有线程 cyclicBarrier.await(); System.out.println("======-----------------------------并发：" + LocalDateTime.now()); Thread.sleep(new Random().nextInt(2000)); System.out.println("======-----------------------------" + LocalDateTime.now() + ":" + Thread.currentThread().getName() + "；守护线程：" + Thread.currentThread().isDaemon()); } catch (InterruptedException e) { e.printStackTrace(); } return "ok:" + LocalDateTime.now(); }); futureList.add(submit); } for (Future<String> future : futureList) { future.get(); // System.out.println(future.get()); } }
输出
======-----------------------------并发：2019-08-06T21:11:21.970 ======-----------------------------并发：2019-08-06T21:11:21.970 ======-----------------------------并发：2019-08-06T21:11:21.970 ======-----------------------------并发：2019-08-06T21:11:21.970 ======-----------------------------并发：2019-08-06T21:11:21.970 ======-----------------------------2019-08-06T21:11:22.488:pool-1-thread-2；守护线程：false ======-----------------------------2019-08-06T21:11:22.610:pool-1-thread-1；守护线程：false ======-----------------------------2019-08-06T21:11:22.635:pool-1-thread-4；守护线程：false ======-----------------------------2019-08-06T21:11:23.222:pool-1-thread-5；守护线程：false ======-----------------------------2019-08-06T21:11:23.807:pool-1-thread-3；守护线程：false ======-----------------------------并发：2019-08-06T21:11:25.161 ======-----------------------------并发：2019-08-06T21:11:25.161 ======-----------------------------并发：2019-08-06T21:11:25.161 ======-----------------------------并发：2019-08-06T21:11:25.161 ======-----------------------------并发：2019-08-06T21:11:25.161 ======-----------------------------2019-08-06T21:11:26.123:pool-1-thread-2；守护线程：false ======-----------------------------2019-08-06T21:11:26.183:pool-1-thread-4；守护线程：false ======-----------------------------2019-08-06T21:11:26.295:pool-1-thread-3；守护线程：false ======-----------------------------2019-08-06T21:11:26.701:pool-1-thread-5；守护线程：false ======-----------------------------2019-08-06T21:11:27.016:pool-1-thread-1；守护线程：false ======-----------------------------并发：2019-08-06T21:11:28.752 ======-----------------------------并发：2019-08-06T21:11:28.752 ======-----------------------------并发：2019-08-06T21:11:28.752 ======-----------------------------并发：2019-08-06T21:11:28.752 ======-----------------------------并发：2019-08-06T21:11:28.752 ======-----------------------------2019-08-06T21:11:28.983:pool-1-thread-3；守护线程：false ======-----------------------------2019-08-06T21:11:29.548:pool-1-thread-5；守护线程：false ======-----------------------------2019-08-06T21:11:29.668:pool-1-thread-1；守护线程：false ======-----------------------------2019-08-06T21:11:29.827:pool-1-thread-2；守护线程：false ======-----------------------------2019-08-06T21:11:29.868:pool-1-thread-4；守护线程：false
二、