java XPath 查找包含 CSS 类的祖先节点
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XPath to find ancestor node containing CSS class
提问by Juan Mendes
I am writing some Selenium tests and I need to be able to find an ancestor of a WebElementthat I have already found.
我正在编写一些 Selenium 测试，我需要能够找到WebElement我已经找到的 a 的祖先。
This is what I'm trying but is returning no results
这就是我正在尝试但没有返回任何结果
// checkbox is also a WebElement
WebElement container = checkbox.findElement(By.xpath(
"current()/ancestor-or-self::div[contains(@class, 'x-grid-view')]") );
The image below shows the div that I have selected highlighted in dark blue and the one I want to find with an arrow pointing at it.
下图显示了我选择的 div 以深蓝色突出显示，以及我想找到的带有箭头指向的 div。
UPDATETried prestomanifesto's suggestion and got the following error
更新尝试了 prestomanifesto 的建议并得到以下错误
[cucumber] org.openqa.selenium.InvalidSelectorException: The given selector ./ancestor::div[contains(@class, 'x-grid-view']) is either invalid or does not result in a WebElement. The following error occurred:
[cucumber] [InvalidSelectorError] Unable to locate an element with the xpath expression ./ancestor::div[contains(@class, 'x-grid-view']) because of the following error:
[cucumber] [Exception... "The expression is not a legal expression." code: "51" nsresult: "0x805b0033 (NS_ERROR_DOM_INVALID_EXPRESSION_ERR)" location: "file:///C:/Users/JUAN~1.MEN/AppData/Local/Temp/anonymous849245187842385828webdriver-profile/extensions/fxdriv
Update 2Really weird, even by ID is not working
更新 2真的很奇怪，即使通过 ID 也不起作用
[cucumber] ? ? ? org.openqa.selenium.NoSuchElementException: Unable to locate element:{"method":"xpath","selector":"./ancestor::div[@id='gridview-1252']"}
Update 3
更新 3
The following XPATH works, but is brittle
以下 XPATH 有效，但很脆弱
../../../../../../../*
?
?
回答by Tomalak
This shouldselect the element you want
这应该选择你想要的元素
./ancestor::div[contains(concat(' ', @class, ' '), ' x-grid-view ')][1]
In plain English: Of all the ancestor divelements that have ' x-grid-view 'in their class, select the first (closest) one.
通俗地说：在其类中的所有祖先div元素中' x-grid-view '，选择第一个（最接近的）。
Notes:
笔记：
- I concat spaces as a defensive measure to prevent partial matches.
current()is an XSLT function, not an XPath one. It has no meaning outside of XSLT. The current node is expressed as.in XPath.
- 我连接空格作为防止部分匹配的防御措施。
current()是一个 XSLT 函数，而不是一个 XPath 函数。它在 XSLT 之外没有任何意义。当前节点.在 XPath 中表示。
