java - 从我的响应数据中获取特定的字符串值

Question

我从我的java代码中获取响应数据，我按如下方式点击URL，

    String url = "http://www.google.com/search?q=mkyong";
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();

    // optional default is GET
    con.setRequestMethod("GET");

    //add request header
    con.setRequestProperty("User-Agent", USER_AGENT);

    int responseCode = con.getResponseCode();
    System.out.println("\nSending 'GET' request to URL : " + url);
    System.out.println("Response Code : " + responseCode);

    BufferedReader in = new BufferedReader(
            new InputStreamReader(con.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();

    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();

    //print result
    System.out.println(response.toString());

我正在将 html 数据作为字符串值获取...

我想从此响应数据中获取隐藏值。

    <input type="hidden" name="HREF.DUMMY.MENSYS.1"
        value="-X-tB--3TF8LlA02j-LKYRAT75rwYwwchuvSyZ9vWVwQ0"
        id="url" />

如何获取这个值？

Answer 1

你可以，

只需在您的响应中使用以下代码即可，

    Document doc = Jsoup.connect(response.toString());
    Element el= doc.select("type[hidden]");
    Streing val = el.getAttr("value");

然后您可以从 doc 对象中找到您的元素。