如何將解析持續時間限制設置為 java 中的文檔 object

Question

我在 java 中使用 Jtidy 解析器。這是我的代碼...

  URL url = new URL("www.yahoo.com");
  HttpURLConnection conn = (HttpURLConnection) url.openConnection();
  InputStream in = conn.getInputStream();
  Tidy tidy = new Tidy();
  Document doc = tidy.parseDOM(in, null);

當我來到這個語句Document doc = tidy.parseDOM(in, null); ,解析頁面的時間太長，所以我想為文檔object設置時間限制。 請幫助我，如何設置時間。

Answer 1

您可以使用java.util.Executors框架並向其提交限時任務。

下面是一些演示這一點的代碼：

// Note that these variables must be declared final to be accessible to task
final InputStream in = conn.getInputStream();
final Tidy tidy = new Tidy();

ExecutorService service = Executors.newSingleThreadExecutor();
// Create an anonymous class that will be submitted to the service and returns your result
Callable<Document> task = new Callable<Document>() {
    public Document call() throws Exception {
        return tidy.parseDOM(in, null);
    }
};
Future<Document> future = service.submit(task);
// Future.get() offers a timed version that may throw a TimeoutException
Document doc = future.get(10, TimeUnit.SECONDS);