java - 所有任务完成后spring boot应用程序不退出

Question

这是我的应用程序类 -

@EnableAutoConfiguration
@SpringBootApplication
@Configuration
public class Application implements CommandLineRunner {
private static final Logger log = LoggerFactory.getLogger(Application.class);

@Autowired
private ITestService3 testService3;

public static void main(String[] args) {
    System.exit(SpringApplication.exit(SpringApplication.run(Application.class, args)));

    @Override
    public void run(String... strings) throws Exception {
        testService3.multiThreadTest();
    }
}

方法 -

public void multiThreadTest() {
    ThreadPoolExecutor readExecutor = (ThreadPoolExecutor) Executors.newFixedThreadPool(10);
    List<String> files = listFiles(new File("/Users/admin/filesList"), new ArrayList<>());
    for (String file : files) {
        readExecutor.execute(new FileParser(file));
    }
}

即使在读取所有文件后，应用程序也不会终止
但是当我使用

System.exit(SpringApplication.exit(SpringApplication.run(Application.class, args)));

应用程序终止，所有线程都被杀死。

当我使用 -

SpringApplication.run(Application.class, args).close();

即使在应用程序说这之后线程继续运行 -

org.springframework.context.annotation.AnnotationConfigApplicationContext@6eda5c9: startup date [Mon Aug 15 04:42:02 IST 2016]; root of context hierarchy 2016-08-15 04:42:05.390 INFO 36600 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans on shutdown

然后我必须手动终止该应用程序。应用程序以代码 130 退出

有人可以帮助我优雅地关闭应用程序。

谢谢

Answer 1

首先，您没有关闭 ExecutorService正确，您的 multiThreadTest应该看起来像:

public void multiThreadTest() throws InterruptedException {
    ThreadPoolExecutor readExecutor = (ThreadPoolExecutor) Executors.newFixedThreadPool(10);
    List<String> files = listFiles(new File("/Users/admin/filesList"), new ArrayList<>());
    for (String file : files) {
        readExecutor.execute(new FileParser(file));
    }

    readExecutor.shutdown();
    readExecutor.awaitTermination(5, TimeUnit.MINUTES); // wait for tasks to complete
    readExecutor.shutdownNow();
}