在 Selenium (Python) 中使用 XPath Selector 'following-sibling::text()' [英] Using XPath Selector 'following-sibling::text()' in Selenium (Python)

问题描述

我正在尝试使用 Selenium(在 Python 中)从网站中提取一些信息.我一直在使用 XPath 选择元素，但在使用以下兄弟选择器时遇到了问题.HTML如下:

I'm trying to use Selenium (in Python) to extract some information from a website. I've been selecting elements with XPaths but am having trouble using the following-sibling selector. The HTML is as follows:

<span class="metadata">
    <strong>Photographer's Name: </strong>
    Ansel Adams
</span>

我可以用

In [172]: metaData = driver.find_element_by_class_name('metadata')

In [173]: metaData.find_element_by_xpath('strong').text
Out[173]: u"Photographer's Name:"

我正在尝试选择标记后的文本部分(示例中为Ansel Adams").我以为我可以使用以下兄弟选择器，但我收到以下错误:

I'm trying to select the section of text after the tag ('Ansel Adams' in the example). I assumed I could use the following-sibling selector but I receive the following error:

In [174]: metaData.find_element_by_xpath('strong/following-sibling::text()')
ERROR: An unexpected error occurred while tokenizing input
The following traceback may be corrupted or invalid
The error message is: ('EOF in multi-line statement', (328, 0))
... [NOTE: Omitted the traceback for brevity] ...
InvalidSelectiorException: Message: u'The given selector strong/following-sibling::text() is either invalid or does not result in a WebElement. The following error occurred:\n[InvalidSelectorError] The result of the xpath expression "strong/following-sibling::text()" is: [object Text]. It should be an element.' 

关于为什么这不起作用的任何想法?

Any ideas as to why this isn't working?

推荐答案

@RossPatterson 是正确的.问题是文本'Ansel Adams' 不是WebElement，所以你不能使用find_element 或find_elements.如果您将 HTML 更改为

@RossPatterson is correct. The trouble is that the text 'Ansel Adams' is not a WebElement, so you cannot use find_element or find_elements. If you change your HTML to

<span class="metadata">
    <strong>Photographer's Name: </strong>
    <strong>Ansel Adams</strong>
</span>

然后 find_element_by_xpath('strong/following-sibling::*[1]').text 返回 'Ansel Adams'.

then find_element_by_xpath('strong/following-sibling::*[1]').text returns 'Ansel Adams'.

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