首頁猿問 spring boot的測試問題，求解答

spring boot的測試問題，求解答

Java

HUWWW 2019-02-19 06:52:32

@RunWith(SpringJUnit4ClassRunner.class)@WebAppConfiguration@Transactional@SpringApplicationConfiguration(Application.class)public class Main { static Log logger = LogFactory.getLog(Main.class); @Test public void test() { ExecutorService fixedThreadPool = Executors.newFixedThreadPool(11); for (int i = 0; i < 10; i++) { fixedThreadPool.execute(new Runnable() { @Override public void run() { System.out.println("a"); } }); } System.out.println("b"); } 為什么輸出結(jié)果是ab，而不是10個(gè)a和1個(gè)b

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1 回答

慕碼人8056858

TA貢獻(xiàn)1803條經(jīng)驗(yàn) 獲得超6個(gè)贊

單元測試運(yùn)行結(jié)束后會強(qiáng)制退出進(jìn)程。所以剩下的線程并不會執(zhí)行。你可以使用下面的示例等待所有任務(wù)執(zhí)行完成。

ExecutorService executorService = Executors.newFixedThreadPool(11);
CountDownLatch latch = new CountDownLatch(10);
for (int i = 0; i < 10; i++) {
    final int v = i;
    executorService.execute(() -> {
        latch.countDown();
        System.out.println(v + " - a");
    });
}
System.out.println("b");
try {
    // 等待所有任務(wù)結(jié)束
    latch.await();
} catch (InterruptedException e) {
    e.printStackTrace();
}

反對回復(fù) 2019-03-01