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我需要一点帮助来理解 Jsoup 的基础知识。以下代码有效，但我想知道是否需要以某种方式关闭连接。在 Jsoup 网站上找不到任何关于它的信息。如果在后台执行方法后应用程序保持不变，我每五分钟左右在 log cat 中收到一条消息，说“请求时间失败：java.net.SocketException：协议不支持地址族”。所以我想确保我没有不必要地消耗数据。谢谢你。

            protected String doInBackground(String... params) {
        // TODO Auto-generated method stub
        try {
        //  connect to web page based on user input
            Document doc = Jsoup.connect(routeURL).get();


        //  select relevant page elements
            Elements fareStageNumbers = doc.getElementsByClass("fare_stages_inner_table");

       //   test printing out fare stage numbers
            for(Element div : fareStageNumbers){

                Log.v(TAG, div.text());

            }



        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }

日志信息：

    01-12 20:58:28.755: D/SntpClient(78): request time failed: java.net.SocketException: Address family not supported by protocol
    01-12 21:03:28.765: D/SntpClient(78): request time failed: java.net.SocketException: Address family not supported by protocol
    01-12 21:08:28.775: D/SntpClient(78): request time failed: java.net.SocketException: Address family not supported by protocol
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1 回答 1

9

请求完成后，Jsoup 会自行关闭连接：

// from 'org.jsoup.helper.HttpConnection' class
static HttpConnection.Response execute(Connection.Request req, HttpConnection.Response previousResponse) throws IOException {
    // ...
    HttpURLConnection conn = createConnection(req);
    HttpConnection.Response res;
    try {
        // ...
    } finally {
        // per Java's documentation, this is not necessary, and precludes keepalives. However in practise,
        // connection errors will not be released quickly enough and can cause a too many open files error.
        conn.disconnect();
    }
    // ...
}

例外：您的网址是否包含协议（网址以 eg. 开头http://）？

于 2013-01-13T19:14:39.703 回答