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使用JSOUP选择具有特定ID的<div>元素

javaandroidjsoup
25
我正在为一门课程制作一个小型的Android应用程序，从美国癌症协会的网站上寻找与癌症相关的活动。我一直在使用JSoup获取有关这些事件的基本信息，并尝试使用select()方法获取特定信息。但是，我目前使用的方法会抓取更多的HTML节点，而我无法找出原因。我要抓取的表格如下所示:
编辑：我意识到 where id = "pnlResults" 的位置并不是在那个表格结束，它在大约另外三个表格后才结束，这些表格都包含我想要抓取的信息。以下是该表格：
    <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:katerina.kormas@cancer.org?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，我想提取通用信息和事件位置。我该如何处理？也许可以使用我刚刚获取的选择子集再次选择头部是我想要的内容吗？

我使用select（）的代码如下所示。就像我之前说的那样，我尝试使用

select("div[id=pnlResults]);

但是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;
}

非常感谢您的帮助。

3个回答
40

尝试:

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

关于您的更新:

由于您现在有更多的数据，而且HTML本身并不是很好，所以您需要仔细查看它以获取您的数据。如果您需要的内容都具有id值，则使用这些元素的id属性来获取文本。

那个方法是有效的，但我没有意识到表格并没有在我发布的最后一个</div>处结束。 - Tom
1
@Tom：如果C0deAttack的帖子对你有帮助，请给它点赞。我向C0deAttack加1，因为它确实帮了我！ - Hovercraft Full Of Eels
7

如果你想获取id为“pnlResults”的div的内容，JSoup提供了一个名为getElementById的方法。

例如，如果你想获取该内容并将其放入字符串中，可以像这样操作：

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

然后，您可以将此内容放入Android的WebView中，它将运行良好。希望这能帮助到某些人！
1

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();
      }
   }
}
先生，您真是太棒了。然而，从这些原始结果中，当您进入活动描述网页时，您可以获取地址和其他我想要的详细信息。 - Tom
@Tom：我不明白你的意思。你是想说你的程序现在可以运行了吗？ - Hovercraft Full Of Eels
这还是一个正在进行中的工作，但基于您的代码，我有一个很好的想法可以继续推进。我应该能够添加一些内容并获得我想要的结果。 - Tom
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