java - 如何使用具有多个类名元素的 Jsoup 解析 html 文件？

Question

下面的java代码适用于带有类的html文件，例如css-sched-table-title。

但是我在 html 文件中需要查找多个类名，例如 css-sched-waypoints 、 css-sched-times 。如何使用 jsoup 中的 getElementsByClass 方法组合搜索。我不想多次编写代码，因为我想保留顺序。我的观点是我想要类似的东西

doc.getElementsByClass("css-sched-table-title"|| doc.getElementsByClass("css-sched-waypoints");

    Document doc = Jsoup.parse(content);

    Elements ele = doc.getElementsByClass("css-sched-table-title");
    for (Element link : ele) {

       String linkText = link.text();
       System.out.println(linkText);    

   }

。

<tr ALIGN="CENTER">
           <td CLASS="css-sched-times">&nbsp;</td>
           <td CLASS="css-sched-times">6:15</td>
           <td CLASS="css-sched-times">&nbsp;</td>
           <td CLASS="css-sched-times">6:20</td>
           <td CLASS="css-sched-times">&nbsp;</td>
           <td CLASS="css-sched-times">6:24</td>
           <td CLASS="css-sched-times">&nbsp;</td>
           <td CLASS="css-sched-times">6:34</td>
           <td CLASS="css-sched-times">&nbsp;</td>
           <td CLASS="css-sched-times">6:34</td>
           <td CLASS="css-sched-times">&nbsp;</td>
           <td CLASS="css-sched-times">6:40</td>
           <td CLASS="css-sched-times">&nbsp;</td>
           <td CLASS="css-sched-times">6:46</td>
           <td CLASS="css-sched-times">&nbsp;</td>
           <td CLASS="css-sched-times">6:54</td>
</tr>
<tr VALIGN="BOTTOM">
           <TD>&nbsp;</TD>
           <TD ALIGN="CENTER" WIDTH="100" CLASS="css-sched-waypoints">Townline and Southern</TD>
           <TD>&nbsp;</TD>
           <TD ALIGN="CENTER" WIDTH="100" CLASS="css-sched-waypoints">Clearbrook and Blueridge</TD>
           <TD>&nbsp;</TD>
           <TD ALIGN="CENTER" WIDTH="100" CLASS="css-sched-waypoints">Clearbrook and South Fraser</TD>
           <TD>&nbsp;</TD>
           <TD ALIGN="CENTER" WIDTH="100" CLASS="css-sched-waypoints">Ar. Bourquin Exchange</TD>
           <TD>&nbsp;</TD>
           <TD ALIGN="CENTER" WIDTH="100" CLASS="css-sched-waypoints">Lv. Bourquin Exchange</TD>
           <TD>&nbsp;</TD>
           <TD ALIGN="CENTER" WIDTH="100" CLASS="css-sched-waypoints">Downtown Abbotsford</TD>
           <TD>&nbsp;</TD>
           <TD ALIGN="CENTER" WIDTH="100" CLASS="css-sched-waypoints">McMillan and Old Yale</TD>
           <TD>&nbsp;</TD>
           <TD ALIGN="CENTER" WIDTH="100" CLASS="css-sched-waypoints">Sandy Hill and Old Clayburn</TD>
   </tr>

 <tr ALIGN="CENTER">
      <td CLASS="css-sched-times">&nbsp;</td>
      <td CLASS="css-sched-times">8:12</td>
      <td CLASS="css-sched-times">&nbsp;</td>
      <td CLASS="css-sched-times">8:17</td>
      <td CLASS="css-sched-times">&nbsp;</td>
      <td CLASS="css-sched-times">8:21</td>
      <td CLASS="css-sched-times">&nbsp;</td>
      <td CLASS="css-sched-times">8:31</td>
      <td CLASS="css-sched-times">&nbsp;</td>
      <td CLASS="css-sched-times">8:34</td>
      <td CLASS="css-sched-times">&nbsp;</td>
      <td CLASS="css-sched-times">8:40</td>
      <td CLASS="css-sched-times">&nbsp;</td>
      <td CLASS="css-sched-times">8:46</td>
      <td CLASS="css-sched-times">&nbsp;</td>
      <td CLASS="css-sched-times">8:54</td>
    </tr>

Answer 1

从您之前的查询中获取线索，当我尝试通过有效的 Selector 语法组合 3 个 td 时，我得到了您期望的结果。

doc.select("td[class=css-sched-table-title], td[class=css-sched-waypoints], td[class=css-sched-times]")

注意，您可以在选择器语法中组合多个条件，如下所示 Elements row = doc.select("td[class=css-sched-table-title], td[class =css-sched-waypoints], td[class=css-sched-times]"); 这实际上成为您的 OR 运算符。

Elements row = doc.select("td[class=css-sched-table-title], td[class=css-sched-waypoints], td[class=css-sched-times]");
        System.out.println("::Total Count::" + row.size());

        Iterator<Element> iterator = row.listIterator();
        while (iterator.hasNext()) {
            Element element = iterator.next();
            String id = element.attr("id");
            String classes = element.attr("class");
            String value = element.text();
            System.out.println("Id : " + id + ", classes : " + classes
                    + ", value : " + value);
        }

给予，

::Total Count::25
Id : , classes : css-sched-table-title, value : Saturday - Afternoon
Id : , classes : css-sched-waypoints, value : Townline and Southern
Id : , classes : css-sched-waypoints, value : Clearbrook and Blueridge
Id : , classes : css-sched-waypoints, value : Clearbrook and South Fraser
Id : , classes : css-sched-waypoints, value : Ar. Bourquin Exchange
Id : , classes : css-sched-waypoints, value : Lv. Bourquin Exchange
Id : , classes : css-sched-waypoints, value : Downtown Abbotsford
Id : , classes : css-sched-waypoints, value : McMillan and Old Yale
Id : , classes : css-sched-waypoints, value : Sandy Hill and Old Clayburn
Id : , classes : css-sched-times, value :  
Id : , classes : css-sched-times, value : 6:15
Id : , classes : css-sched-times, value :  
Id : , classes : css-sched-times, value : 6:20
Id : , classes : css-sched-times, value :  
Id : , classes : css-sched-times, value : 6:24
Id : , classes : css-sched-times, value :  
Id : , classes : css-sched-times, value : 6:34
Id : , classes : css-sched-times, value :  
Id : , classes : css-sched-times, value : 6:34
Id : , classes : css-sched-times, value :  
Id : , classes : css-sched-times, value : 6:40
Id : , classes : css-sched-times, value :  
Id : , classes : css-sched-times, value : 6:46
Id : , classes : css-sched-times, value :  
Id : , classes : css-sched-times, value : 6:54

有关Selector语法的详细用法请参阅here.