线程池工具类

1.编写线程池工具类

public class ThreadUtils {

    public static ExecutorService newFixedThreadPool() {
        return new ThreadPoolExecutor(4,4, 10L, TimeUnit.MILLISECONDS,
                new LinkedBlockingDeque<Runnable>(100),
                Executors.defaultThreadFactory(),
                new ThreadPoolExecutor.CallerRunsPolicy());
    }

    /**
     * （1.8版本）使用线程池请求接口
     */
    public static <T> void  executerPool(List<T> list) throws InterruptedException {
        ExecutorService executorService = newFixedThreadPool();
        List<T> collect = list.stream().filter(l -> l instanceof Runnable).collect(Collectors.toList());
        final CountDownLatch count=new CountDownLatch(collect.size());
        for (T runnable : collect) {
            Customers customers = (Customers) runnable;
            customers.counts(count);
            executorService.execute(customers);
        }
        count.await();
        executorService.shutdown();
    }

    /**
     * （1.7版本）使用线程池请求接口
     */
    public static <T> void  executerPool2(List<T> list) throws InterruptedException {
        ExecutorService executorService = newFixedThreadPool();
        List<Customers> runnables = new ArrayList<>();
        for (T t : list) {
            if(t instanceof Customers){
                runnables.add((Customers) t);
            }
        }
        final CountDownLatch count=new CountDownLatch(runnables.size());
        for (Customers runnable : runnables) {
            runnable.counts(count);
            executorService.execute(runnable);
        }
        count.await();
        executorService.shutdown();
    }

}

2.定义接口ThreadFactorys和Customers

public interface ThreadFactorys{
    public abstract void counts(CountDownLatch countDownLatch);
}

public interface Customers extends Runnable,ThreadFactorys{
}

3.继承Customers

public class InterfaceRunnable implements Customers{
    private String name;
    // 线程计数器
    private CountDownLatch count;
    public InterfaceRunnable(String name) {
        this.name = name;
    }
    @Override
    public void run() {
        // 执行方法
        System.out.println(name);
        count.countDown();
    }
    @Override
    public void counts(CountDownLatch countDownLatch) {
        this.count = countDownLatch;
    }
}

4.使用工具类进行调用（只需要把需要执行的类继承runnable方法，然后用list丢入工具类就行了）

public class ThreadController {
    public static void main(String[] args) throws InterruptedException {
        List<InterfaceRunnable> list = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            list.add(new InterfaceRunnable("方法调用:"+i));
        }
        ThreadUtils.executerPool(list);
    }
}