JSOUP 选择;具有特定ID

Question

我正在为一堂课制作一个小型 Android 应用程序，我可以在其中从美国癌症协会的网站上查找与癌症相关的事件。我一直在使用 JSoup 来获取有关事件的基本信息，并从我尝试使用 select() 方法的网站获取特定信息。然而，我当前使用的方法获取的 HTML 节点比我想要的要多，但我不明白为什么。我试图抓取的表看起来像这样：

编辑：我意识到 where id = "pnlResults" 并没有在该表处结束，它在大约 3 个表之后结束，所有表都包含我想要抓取的信息。这是再次的表格

    <div id="pnlResults">

        <h2><span id="lblEventName">American Cancer Society 44th Annual Walter Hagen Golf Tournament</span></h2>
        <!-- General Information Box -->
        <div class="text-box boxed wide">
            <h3 class="head" style="width:97%;">
                General Information
            </h3>
            <div class="content">


                <p>
                    <label>Event Times:</label><span id="lblStartDate">Monday, July 30, 2012</span><span id="lblEndDate"></span><br />
                    <label>&nbsp;</label><span id="lblStartTime">10:00 AM</span> - <span id="lblEndTime">9:00 PM</span>
                </p>
                <p>
                    <label>Time Zone:</label><span id="lblTimeZone">Eastern</span>

                </p>
                <p>
                    <label>Description:</label><span id="lblDesc" class="fieldData long">The American Cancer Society Walter Hagen Golf Tournament highlights the Society’s role in supporting research and patient care here in Rochester. Funds raised through this event help us make a difference in patents’ lives every day though programs including Road to Recovery and Patient Navigation as well as support grants to our research institutions.  144 golfers will play a round of golf and then enjoy cocktails, dinner, and silent auction following the tournament. </span>
                </p>
                <p>
                    <label>Agenda:</label><span id="lblAgenda" class="fieldData long">10:00am - Check-in, 11:00am - Lunch, 12:15pm - Shot gun start, 6:00 - Cocktails and silent auction, 7:00pm Dinner and program</span>
                </p>

            </div>
        </div>

        <div id="pnlStandardDisplay">


        <!-- Event Location Box -->
        <div class="text-box boxed wide line">
            <h3 class="head" style="width:97%;">
                Event Location
            </h3>
            <div class="content" style="display:inline-block; width:97%;">


                <div >
                    <div id="mapOutsideContainer" class="resource-map">
                       <div id="map_canvas" class="resource-map" ></div>
                    </div> 
                    <script  type="text/javascript">
                        var mapDataPoints = [{ "lat":43.1075545,"lng":-77.5164518, "title":"Golf Event","content":"<b>American Cancer Society 44th Annual Walter Hagen Golf Tournament<\/b><br/><\/br>4045 East Avenue<br /><br/>Rochester, New York  14618<br /><br />Phone: <br />Fax: "} ];
                        buildMap(mapDataPoints, -5);
                    </script>
                </div>

                <h4><span id="lblLocationName">Irondequoit Country Club</span></h4>
                <p>

                    <label>Address:</label><span id="lblAddress" class="fieldData" style="width:150px;">4045 East Avenue<br />Rochester, New York 14618</span>
                </p>
                <p>
                    <label nowrap="nowrap">Handicap Accessible:</label><span id="lblHandicapAccesible">Yes</span>
                </p>
            </div>

        </div>

        <!-- Primary Contact Box -->
        <div class ="line" >
        <div id="eventPrimaryContact_divContact" class="text-box boxed wide">
                    <h3 class="head" style="width:97%;">
                        Primary Contact
                    </h3>
                    <div class="content">

                        <p>

                            <label>Contact:</label><span id="eventPrimaryContact_lblContact">Katerina Kormas (<a href="mailto:[email protected]?subject=American Cancer Society 44th Annual Walter Hagen Golf Tournament">Contact ACS for Details</a>)</span>

                        </p>
                        <p>
                            <label>Contact Type:</label><span id="eventPrimaryContact_lblContactType">ACS Staff</span>
                        </p>
                        <p>

                            <label>Phone:</label><span id="eventPrimaryContact_lblContactPhone">(585) 288-1950</span>
                        </p>
                        <p>
                            <label>Additional Information:</label><span id="eventPrimaryContact_lblContactAddlInfo" class="fieldData long">Direct line is 585-224-4919 or cell 585-645-8912</span>
                        </p>
                    </div>
                </div>

        </div>

        <!-- Registration Information Box -->

        <div class="text-box boxed wide line">
            <h3 class="head" style="width:97%;">
                Registration Information
            </h3>
            <div class="content">

                <p>
                    <label nowrap="nowrap">Registration Required?: </label><span id="lblRegRequired">Yes</span>

                </p>
            </div>
        </div>       

        <!-- Event Cost Box -->
        <div class ="line" >
        <div id="eventCost_divCost" class="text-box boxed wide">
                    <h3 class="head" style="width:97%;">
                        Event Cost
                    </h3>
                    <div class="content">

                        <p>
                            <label>Cost/Registration Fee: </label><span id="eventCost_lblCostRegFee" class="fieldData long">$350 per golfer</span>
                        </p>
                        <p>
                            <label>Payment Type: </label><span id="eventCost_lblPaymentTypes" class="fieldData">Cash, Check, American Express, Mastercard, Visa, Discover</span>
                        </p>
                        <p>

                            <label>Check Payable To: </label><span id="eventCost_lblCheckPayable" class="fieldData">American Cancer Society</span>
                        </p>
                        <p>
                            <label>Memo Line: </label><span id="eventCost_lblCheckMemo" class="fieldData">American Cancer Society 44th Annual Walter Hagen Golf Tourna</span>
                        </p>
                        <p>
                            <label>Mail Check To:</label><span id="eventCost_lblCheckMailTo" class="fieldData">American Cancer Society<br />1120 South Goodman St<br />Rochester, New York 14620</span>

                        </p>
                    </div>
                </div>

        </div>

        <!-- Tax Deduction Information Box -->
        <div class="line">

                <div class="text-box boxed wide">
                    <h3 class="head" style="width:97%;">
                        Tax Deduction Information
                    </h3>

                    <div class="content">
                        <p>
                            $210  per golfer is tax deductible
                        </p>
                    </div>
                </div>  

        </div>



</div> <!-- end standard display -->
         <!-- end daffodil display -->

编辑：鉴于这些新表格，我想提取一般信息和事件位置。我该怎么做呢？也许使用 select 的子集我只需再次选择标题在哪里是我想要的？

我使用 select() 的代码如下所示。正如我之前所说，我尝试使用

select("div[id=pnlResults]);

但返回的数据不仅仅是id为pnlResults的div。

public ArrayList<Event> results()
{
    ArrayList<Event> results = new ArrayList<Event>();
    Document doc = Jsoup.parse(page);
    Elements links = doc.select("a[href*=event-details]");

    for(Element e: links)
    {
        String title = e.text();
        String link = "http://www.cancer.org/involved/participate/app/"+e.attr("href");
        try{
            Document eventInfo = Jsoup.connect(link).get();
            Elements info = eventInfo.select("div[id*=pnlResults");


        }
        catch(MalformedURLException exception)
        {
            exception.printStackTrace();
        }
        catch(IOException exception)
        {
            exception.printStackTrace();
        }

    }
    return results;
}

任何帮助将不胜感激。

Answer 1

尝试：

 Elements info = eventInfo.select("div#pnlResults");

更新您的更新：

由于您现在拥有更多数据，并且 HTML 本身并不是那么好，您只需通过它来挑选数据即可。如果您需要的内容都有 id 值，则使用这些元素的 id 属性来获取文本。

Answer 2

如果你想获取id为“pnlResults”的div的内容，JSoup提供了方法getElementById。

例如，如果你想获取该内容并将其放入字符串中，你可以这样做：

Document document = Jsoup.connect(LINK_TO_WEBSITE).get();
String content = document.getElementById("pnlResults").outerHtml();

然后，你可以将此内容放入Android的WebView中，它会很好地工作。

希望这会对某人有所帮助！

Answer 3

这对我有用：

import java.io.IOException;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.select.Elements;

public class DivStuff {
   public static final String MY_PAGE = "http://www.cancer.org/Involved/Participate/app" +
        "/event-search.aspx?zip=28590&city=&state=&local-radius=20&textsrch=&startdate=" +
        "11%2F13%2F2011&enddate=&all=1";
   private static final String[] HEADINGS = {"Event", "Location", "City, State", "Date", "Distance"};
   private String page;


   public static void main(String[] args) throws IOException {
      Document doc = Jsoup.connect(MY_PAGE).get();

      Elements links = doc.select("table");
      Elements links2 = links.select("tr");

      if (links2.size() < 2) {
         return;
      }

      for (int i = 1; i < links2.size(); i++) {
         Elements innerDetails = links2.get(i).select("td");
         if (innerDetails.size() != 5) {
            break;
         }
         for (int j = 0; j < HEADINGS.length; j++) {
            System.out.print(HEADINGS[j] + ": ");
            if (j == 0) {
               System.out.println(innerDetails.get(j).select("a").get(0).text());
            } else {
               System.out.println(innerDetails.get(j).text());
            }
         }
         System.out.println();
      }
   }
}