ctl来表示运行状态和工作线程数

线程池的优雅关闭

@Component
public class MyContextClosedHandler implements ApplicationListener<ContextClosedEvent>{
    @Autowired
        @Qualifier("backExecutor")
        private ThreadPoolTaskExecutor backExecutor;
    private static int WAIT_TIME = 30;
    @Override
        public void onApplicationEvent(ContextClosedEvent event) {
        shutdownAndAwaitTermination(backExecutor.getThreadPoolExecutor());
    }
    private void shutdownAndAwaitTermination(ExecutorService pool) {
        pool.shutdown();
        // Disable new tasks from being submitted
        try {
            // Wait a while for existing tasks to terminate
            if (!pool.awaitTermination(30, TimeUnit.SECONDS)) {
                pool.shutdownNow();
                // Cancel currently executing tasks
                // Wait a while for tasks to respond to being cancelled
                if (!pool.awaitTermination(30, TimeUnit.SECONDS))
                                    System.err.println("Pool did not terminate");
            }
        }
        catch (InterruptedException ie) {
            // (Re-)Cancel if current thread also interrupted
            pool.shutdownNow();
            // Preserve interrupt status
            Thread.currentThread().interrupt();
        }
    }
}

springboot-35-线程池优雅停机secvtorii新浪博客

线程池处理异常

Thread&ThreadPoolExecutor异常处理