如何在通过硒和Python自动执行的同时使用xpath/css选择器在drupal 8网站中单击动态链接 [英] How to click a dynamic link with in a drupal 8 website using xpath/css selector while automating through Selenium and Python

问题描述

我试图单击编辑"选项卡链接，其形式为无序列表中的超链接.

I am trying to click on an edit tab link, and its in the form of a hyperlink in an unordered list.

这是HTML:

<li><a href="/node/2658/edit" data-drupal-link-system-path="node/2658/edit">Edit</a></li>

我一直在尝试使用 driver.find_element_by_link_text('Edit')查找元素，但是始终会得到 NoSuchElementException .

I have been trying to use driver.find_element_by_link_text('Edit') to find the element, however always get a NoSuchElementException.

我还使用了部分文本fxn和html的所有变体，并且收到相同的错误.

I have also used the by partial text fxn, with all variations of the html, and receive the same error.

我还发现了以下包含正确链接的html:

There is also the following html I found that includes the proper link:

<link rel="edit-form" href="/node/2658/edit" />

是否可以使用硒功能转到此编辑页面?

Is there a selenium function I can use to go to this edit page?

推荐答案

按照HTML，您共享了 href 和 data-drupal-link的 value 由于存在值 2658 ，-system-path 属性显然是动态的.因此，您需要构造一个动态定位器来定位元素.

As per the HTML you shared the value of href and data-drupal-link-system-path attributes clearly seems to be dynamic due to the presence of the value 2658. So you need to construct a dynamic locator to locate the element.

由于所需元素是动态元素，因此要定位并在该元素上 click()，您必须为 element_to_be_clickable()引入 WebDriverWait ，您可以使用以下任一定位器策略:

As the desired element is a dynamic element so to locate and click() on the element you have to induce WebDriverWait for the element_to_be_clickable() and you can use either of the following Locator Strategies:

• 使用 CSS_SELECTOR :

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "li>a[href$='edit'][data-drupal-link-system-path^='node']"))).click()

使用 XPATH :

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//li/a[contains(@href, 'edit') and starts-with(@data-drupal-link-system-path, 'node')][text()='Edit']"))).click()

注意:您必须添加以下导入:

Note : You have to add the following imports :

from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

要仅考虑 href 和 data-drupal-link-system-path 属性的静态部分，可以在

To consider only the static part of href and data-drupal-link-system-path attributes you can use the following wildcards in css-selectors:

• $ :表示属性值结尾

^ :表示属性值起始于

因此，最精细的css_selector将是:

So the most granular css_selector would be :

li>a[href$='edit'][data-drupal-link-system-path^='node']

---

动态XPATH的解释

要仅考虑 href 和 data-drupal-link-system-path 属性的静态部分，可以使用 xpath :

---

Explanation of the dynamic XPATH

To consider only the static part of href and data-drupal-link-system-path attributes you can use the following functions of xpath:

• contains():表示属性值包含

starts-with():表示属性值以

因此，最精细的xpath将是:

So the most granular xpath would be :

//li/a[contains(@href, 'edit') and starts-with(@data-drupal-link-system-path, 'node')][text()='Edit']

---

参考

您可以在以下位置找到一些相关的讨论:

---

Reference

You can find a couple of relevant discussions in:

• Java硒webdriver表达式通过ccs查找动态元素，以
开头和结尾
• 如何在Python中使用Selenium来获取内部具有动态部分的选择器?
• 通过CSS选择器查找元素在Python中使用ChromeDriver(硒)

您可以在以下位置找到有关 NoSuchElementException 的详细讨论:

You can find a detailed discussion on NoSuchElementException in:

• Selenium"selenium.common.exceptions.NoSuchElementException"(使用Chrome浏览器时

这篇关于如何在通过硒和Python自动执行的同时使用xpath/css选择器在drupal 8网站中单击动态链接的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！