[英]Xpath and wildcards
I have tried several combinations without success. 我尝试了几种组合但没有成功。 The full xpath to that data is
.//*[@id='detail_row_seek_37878']/td
The problem is the number portion '37878' changes for each node and thus I can't use a foreach to loop through the nodes. 该数据的完整xpath是
.//*[@id='detail_row_seek_37878']/td
' .//*[@id='detail_row_seek_37878']/td
。问题是每个节点的数字部分'37878'发生了变化,因此我无法使用foreach循环遍历节点。 Is there some way to use a wildcard and reduce the xpath to .//*[@id='detail wildcard
, in an effort to bypass the absolute value portion? 是否有一些方法可以使用通配符并将xpath减少到
.//*[@id='detail wildcard
[ .//*[@id='detail wildcard
,以便绕过绝对值部分? I am using html agility pack on this. 我正在使用html敏捷包。
HtmlNode ddate = node.SelectSingleNode(".//*[@id='detail_row_seek_37878']/td");
Extract the portion that doesn't change: 提取不变的部分:
//*[starts-with(@id, 'detail_row_seek')]/td
Related Techniques and Functions 相关技术和功能
To match elements whose id
attribute contains the string _row_
at the 7th character : 要匹配其
id
属性包含第7个字符的字符串_row_
元素:
//*[substring(@id, 7, 5)='_row_']/td
To match elements whose id
attribute contains the text detail_
at any position: 要在任何位置匹配
id
属性包含文本detail_
元素:
//*[contains(@id, 'detail_')]/td
To match elements whose id
attribute ends with the text detail_row_seek
: 要匹配
id
属性以文本detail_row_seek
结尾的detail_row_seek
:
//*['detail_row_seek' = substring(@id,
string-length(@id) - string-length('detail_row_seek') + 1)]/td
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