java 利用Future做超时任务处理

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Callable<String> task = new Callable<String>() {     @Override     public String call() throws Exception {         return HttpRequestUtil.host().doGet(requestUrl);     } }; ExecutorService executorService = Executors.newSingleThreadExecutor(); Future<String> future = executorService.submit(task); String hostInfo = future.get(10,TimeUnit.SECONDS);