GetURLsource方法在某些情况下给出了erros java

Question

我已经开发了这段代码来获取网页的url源代码。然而，这种方法有时会失败，并且无法“抓取”页面的源代码。

 private static String[] getUrlSource(String url) throws IOException {
    List<String> myList = new ArrayList<String>();
    URL site = new URL(url);
    BufferedReader in = new BufferedReader(new InputStreamReader(
                site.openStream()));
    String inputLine;
    while ((inputLine = in.readLine()) != null)
        myList.add(inputLine);
    in.close();

    String[] arr = myList.toArray(new String[myList.size()]);
    return arr;
}