多线程异步请求数据

JDK环境：1.8（貌似1.7传参数的时候支持的不是很好）。

public static void main(String[] args) throws ExecutionException, InterruptedException {
    Calendar c1 = Calendar.getInstance();
    testThread();
    Calendar c2 = Calendar.getInstance();
    System.out.println("执行毫秒数：" + (c2.getTimeInMillis() - c1.getTimeInMillis()));
}

    public static void testThread() throws ExecutionException, InterruptedException {
        //ExecutorService executorService = Executors.newCachedThreadPool();
        ExecutorService executorService = new ThreadPoolExecutor(5, 20, 1000, TimeUnit.MILLISECONDS,
                new LinkedBlockingQueue<Runnable>());
        List<Future<String>> futureList = new ArrayList<>();

        for (int i = 0; i < 10; i++) {
            String random = String.valueOf(new Random().nextInt(5) * 1000);
            String index = String.valueOf(i);
            Future<String> future = executorService.submit(new Callable<String>() {
                @Override
                public String call() throws Exception {
                    System.out.println("我是线程：" + index + "，需要沉睡：" + random + "秒");
                    Thread.sleep(Integer.valueOf(random));
                    return String.valueOf(index);
                }
            });
            futureList.add(future);
        }

        for (int i = 0; i < futureList.size(); i++) {
            //    设置请求超时时间
            String result = futureList.get(i).get(10000, TimeUnit.MILLISECONDS);
            //String result = futureList.get(i).get();
            System.out.println("我是序号："+ i +"，我是线程：" + result + "，已经执行完毕");
        }
        executorService.shutdown();
    }

这里的Callable可以自定义实现，看大家需要了。