利用FutureTask进行超时设置方法

public class Test {

 

public static void main(String[] args) {

ExecutorService executor = Executors.newSingleThreadExecutor();

FutureTask future = new FutureTask(new Callable() {

 

public URLConnection call() throws Exception {

// TODO Auto-generated method stub

//真正的任务在这里执行，这里返回类型为string，可以为任意类型的数据

URL realUrl = new URL("http://www.baidu.com");

//打开和url之间的链接

URLConnection connection = realUrl.openConnection();

connection.connect();

return connection;

}

});

executor.execute(future);

try{

URLConnection result = future.get(5000, TimeUnit.MILLISECONDS);

System.out.println(result.getURL());

}catch(InterruptedException  e){

future.cancel(true);    //取消任务

System.out.print("提前中断");

}catch(ExecutionException  e){

future.cancel(true);    //取消任务

System.out.print("任务奔溃");

}catch (TimeoutException  e) {

// TODO: handle exception

future.cancel(true);    //取消任务

System.out.print("超时异常");

}finally {

executor.shutdown();

}

}

}