Question

我正在解析一个html页面，并且有一个很长的CSS Selector（我找不到更短的一个，因为页面是愚蠢的）。它应该选择表中的所有tr，但只选择第二行......我缺少什么？

选择器：

body > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(2) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(3) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(8) > td:nth-child(1) > table:nth-child(4) > tbody:nth-child(1) > tr:nth-child(2) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) tr:not(:first-child)

页面里面有多个表格，但是前90％甚至不重要，选择了我想要使用的表格后，我会跟进一个“[space]tr:not(...)”，所以它应该全部选中下行，不应该吗？

示例html页面（无法链接，您需要登录才能访问它）：http://pastebin.com/gprXTvzz

选择器成功选择我想要的表格后（在选择器...> tbody:nth-child(1) tr:not(:first-child)中），年龄如下：

<tbody>
   <tr valign="bottom">
      <td class="blackmedium" width="80"><b>Part Number</b></td>
      <td class="blackmedium" width="100"><b>Manufacturer</b></td>
      <td class="blackmedium" width="40"><b>Abbr.</b></td>
      <td class="blackmedium" width="50"><b>WIX Part Number</b></td>
      <td class="blackmedium" width="50"><b>Lead Time</b></td>
   </tr>
   <tr>
      <td class="blackmedium" width="80">A0002701098</td>
      <td class="blackmedium" width="100">MERCEDES-BENZ</td>
      <td class="blackmedium" width="40">MBZ</td>
      <td class="blackmedium" width="50"> <a href="http://www.wixindustrialfilters.com/cross.aspx?Part=W03AT780" target="_blank">W03AT780</a>
      </td>
      <td class="blackmedium" width="50">
         STOCK
      </td>
   </tr>
   <tr bgcolor="#e0e0e0">
      <td class="blackmedium" width="80">A0002701598 Discontinued</td>
      <td class="blackmedium" width="100">MERCEDES-BENZ</td>
      <td class="blackmedium" width="40">MBZ</td>
      <td class="blackmedium" width="50"> <a href="javascript:var w=window.open('PartDetail.asp?Part=58892','PartDetail','left=200,top=200,width=530,height=500,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,scrollbars=yes');w.focus();">58892</a>
      </td>
      <td class="blackmedium" width="50">
      </td>
   </tr>
   <tr>
      <td class="blackmedium" width="80">A0002772395</td>
      <td class="blackmedium" width="100">MERCEDES-BENZ</td>
      <td class="blackmedium" width="40">MBZ</td>
      <td class="blackmedium" width="50"> <a href="javascript:var w=window.open('PartDetail.asp?Part=51249','PartDetail','left=200,top=200,width=530,height=500,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,scrollbars=yes');w.focus();">51249</a>
      </td>
      <td class="blackmedium" width="50">
      </td>
   </tr>
   <tr bgcolor="#e0e0e0">
      <td class="blackmedium" width="80">A0002772895</td>
      <td class="blackmedium" width="100">MERCEDES-BENZ</td>
      <td class="blackmedium" width="40">MBZ</td>
      <td class="blackmedium" width="50"> <a href="javascript:var w=window.open('PartDetail.asp?Part=57701','PartDetail','left=200,top=200,width=530,height=500,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,scrollbars=yes');w.focus();">57701</a>
      </td>
      <td class="blackmedium" width="50">
      </td>
   </tr>
</tbody>

Answer 1

body > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(2) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(3) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(8) > td:nth-child(1) > table:nth-child(4) > tbody:nth-child(1) > tr:nth-child(2) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) tr:not(:first-child)

不完全回答你的问题，但是如果标记不是解析友好的并且我需要在可怕的标记table元素中找到深度嵌套，我更喜欢通过存在来找到它其中的特定标题。在这种情况下，您可以找到具有Part Number标题的表。示例XPath：

//table[tr[1]/td/b = "Part Number"]

然后，在此表上，您可以使用"not first child" CSS选择器：

tr:not(:first-child)

或者，您也可以在tr元素之后使用adjacent selector（查找tr元素，这会在逻辑上排除第一行）：

tr + tr

希望这会简化事情。

CSS Selector仅选择第一行

1 个答案: