关闭底层资源强行中断
对于IO这种资源无法通过interrupt()方法中断，但是在实际应用中想中断的话，可以尝试关闭任务在其上发生中断的底层资源。
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public class CloseResource {public static void main(String[] args) throws Exception{ExecutorService exec=Executors.newCachedThreadPool();ServerSocket server=new ServerSocket(8080);InputStream socketInput=new Socket("localhost",8080).getInputStream();exec.execute(new IOBlocked(socketInput));exec.execute(new IOBlocked(System.in));TimeUnit.MILLISECONDS.sleep(100);System.out.println("shut down all threads");exec.shutdownNow();TimeUnit.SECONDS.sleep(1);System.out.println("closing "+socketInput.getClass().getName());socketInput.close();TimeUnit.SECONDS.sleep(1);System.out.println("closing "+System.in.getClass().getName());System.in.close();}}