标签：pool nbsp com 执行 cep code lifecycle life ssr
当我们设计一个程序时，依赖了Spring容器，然而并不需要spring的web环境时(Spring web环境已经提供了优雅关闭)，即程序启动只需要启动Spring ApplicationContext即可，那我们如何去进行优雅关闭呢?
public class Main { public static void main(String[] args) throws InterruptedException { ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath*:services.xml"); applicationContext.start(); } }
有一个bean开启线程执行业务任务
@Component public class HelloLifeCycle implements Lifecycle { private volatile boolean running = false; private volatile boolean businessRunning = true; private ExecutorService executors = Executors.newFixedThreadPool(1); public HelloLifeCycle() { executors.execute(() -> { while (businessRunning) { //启动后,做业务需要做的事情 } }); } public void start() { logger.info("lifycycle start"); running = true; } public void stop() { businessRunning=false; logger.info("lifycycle stop ,and stop the execute"); executors.shutdown(); try { executors.awaitTermination(1, TimeUnit.HOURS); } catch (InterruptedException e) { } running = false; } public boolean isRunning() { return running; } }
该业务类实现了Spring的LifeCycle钩子，Spring在调用其context的start()和stop（）方法时会回调业务类实现的start和stop方法
如果就像上面的Main启动类，我们直接kill这个进程时，Spring是不会优雅关闭的，从而不会调用stop方法
public class Main { public static void main(String[] args) throws InterruptedException { ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath*:services.xml"); applicationContext.registerShutdownHook(); applicationContext.start(); } }
标签：pool nbsp com 执行 cep code lifecycle life ssr
原文地址：https://www.cnblogs.com/deityjian/p/11296929.html
