无法在Java中使用jsoup从html提取内容？

Question

我正在尝试使用jsoup从以下<td>标记中的以下HTML代码中提取内容，这些标记具有类css-sched-table-title和css-sched-waypoints。 但是我不明白有人出了什么问题可以帮忙吗？

Document doc = Jsoup.parse("somelink.html");
    Elements row = doc.select(".css-sched-table-title td");
    Iterator<Element> iterator = row.listIterator();
    while(iterator.hasNext())
    {
       Element element = iterator.next();
        String value = element.text();
        System.out.println("value : " + value);
    }

。

  <tr>
        <td ALIGN="CENTER" COLSPAN="16"  CLASS="css-sched-table-title"><b>Saturday - </b><b>Afternoon</b></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>

Answer 1

只有一个带有css-sched-table-title td标签，但是带有css-sched-waypoints的列表。

同样，为了对齐正确的语法，它应该是Elements row = doc.select("td.css-sched-waypoints"); 请参考这里 。

注：使用的html文件是无效的，并且jsoup不会将其解释为有效的表html内容。 我不得不将上面的内容放在<table></table>标记内。

当我用您的html文件尝试以下代码时：

Elements row = doc.select("td.css-sched-waypoints");
    Element title = doc.select("td.css-sched-table-title").first();

    System.out.println(title.text());
    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);
    }

我明白了

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