java - 关闭 Jsoup 连接

Question

我需要一些帮助来了解 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。如果应用程序在后台方法执行后保持不变，我每五分钟左右在日志 cat 中收到一条消息，说“请求时间失败:java.net.SocketException:协议(protocol)不支持的地址族”。所以我想确保我没有不必要地消耗数据。谢谢。

            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;
    }

日志消息:

    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

Answer 1

Jsoup 在请求完成后自行关闭连接:

// 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();
    }
    // ...
}

异常:您的网址是否包含协议(protocol)(网址以例如 http:// 开头)？