Question

在网页中，我具有以下元素：

....
<select class="widget-listbox form-control" size="6" multiple="multiple">
    <option data-value="sIPSCs%20from%20juvenile%20(P21-30)%20C57BL%2F6J%20male%20mice%20hippocampus%20CA1%20pyramidal%20cell%20(A1)" value="sIPSCs from juvenile (P21-30) C57BL/6J male mice hippocampus CA1 pyramidal cell (A1)" class="">sIPSCs&nbsp;from&nbsp;juvenile&nbsp;(P21-30)&nbsp;C57BL/6J&nbsp;male&nbsp;mice&nbsp;hippocampus&nbsp;CA1&nbsp;pyramidal&nbsp;cell&nbsp;(A1)</option>
    <option data-value="sIPSCs%20from%20juvenile%20(P21-30)%20C57BL%2F6J%20male%20mice%20hippocampus%20CA1%20pyramidal%20cell%20(A2)" value="sIPSCs from juvenile (P21-30) C57BL/6J male mice hippocampus CA1 pyramidal cell (A2)" class="">sIPSCs&nbsp;from&nbsp;juvenile&nbsp;(P21-30)&nbsp;C57BL/6J&nbsp;male&nbsp;mice&nbsp;hippocampus&nbsp;CA1&nbsp;pyramidal&nbsp;cell&nbsp;(A2)</option>
</select>
....

并且我正在尝试以下xpath表达式来选择第一个options元素（用于硒测试）：

//option[contains(text(),"sIPSC")]
//option[text()="sIPSCs from juvenile (P21-30) C57BL/6J male mice hippocampus CA1 pyramidal cell (A1)"]
//option[@value="sIPSCs from juvenile (P21-30) C57BL/6J male mice hippocampus CA1 pyramidal cell (A1)"]
//select/option[contains(text(),"sIPSC")]
//select/option[text()="sIPSCs from juvenile (P21-30) C57BL/6J male mice hippocampus CA1 pyramidal cell (A1)"]
//select/option[@value="sIPSCs from juvenile (P21-30) C57BL/6J male mice hippocampus CA1 pyramidal cell (A1)"]

，但没有显示任何结果（在Chrome，XPath Helper版本2.02；在Chrome版本70.0.3538.110中）。我要查找的元素不在框架内。我还想选择整个字符串“来自幼年（P21-30）C57BL / 6J雄性小鼠海马CA1锥体细胞（A1）的sIPSC”，这可能是一个变量。只是任何字符串。我事先不知道这个字符串的样子...

这次我在做什么错？以上任何一种表达方式都不行吗？

Answer 1

要选择第一个选项作为React元素，您需要诱使 WebDriverWait 使元素可点击，并且您可以使用以下任一方法以下（ Pythonic ）解决方案：

XPath 1 ：

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//select[@class='widget-listbox form-control']/option[contains(@data-value,'(A1)')]"))).click()

XPath 2 ：

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//select[@class='widget-listbox form-control']/option[contains(@value,'(A1)')]"))).click()

XPath 3 ：

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//select[@class='widget-listbox form-control']/option[contains(.,'(A1)')]"))).click()

注意：您必须添加以下导入：

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

Answer 2

看起来两个选项都包含“ sIPSC”

尝试使用xpath标识元素的唯一性，例如：//option[contains(text(),"sIPSC")][contains(text(),"A1")]

如果您总是想要 first （第一）选项： //select/option[contains(text(),"sIPSC")][1]

硒的Chrome XPath表达式找不到元素

2 个答案: