使用下拉菜单时出错 - Python Selenium

Question

大家好

我正在尝试使用 class_name/xpath 从下拉列表中选择一个值 但它不起作用。尝试使用 id 但发现 id 保留 变化。在这方面需要帮助。

This is the dropdown where im trying to select short description

下面是我的代码：

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver import ActionChains
from selenium.webdriver.support.ui import Select
import time

username = '*****'
password = '*****'

url = 'https://*****.service-now.com/'

driver = webdriver.Chrome("C:\WebDrivers\chromedriver.exe")
driver.get(url)

driver.switch_to.frame('gsft_main')
driver.maximize_window()

driver.find_element_by_id('user_name').send_keys(username)
driver.find_element_by_id('user_password').send_keys(password)
driver.find_element_by_id('sysverb_login').click()

wait = WebDriverWait(driver, 10)
incident = wait.until(EC.visibility_of_element_located((By.XPATH, '//span[contains(text(), 
"Incident")]')))
incident.click()

open = driver.find_element_by_link_text('Open - Unassigned')
open.click()

time.sleep(25)

element = driver.find_element_by_class_name('form-control default-focus-outline')
dropdown.Select(element)
dropdown.select_by_value('short_description')

以下是我复制并获得的元素。 复制元素：

<select id="d5f43fd407945410af12f2ae7c1ed05c_select" class="form-control default-focus-outline" aria- 
expanded="false"><option value="zztextsearchyy" selected="SELECTED" role="option">for text</option> 
<option value="number" role="option">Number</option><option value="opened_at" 
role="option">Opened</option><option value="short_description" role="option">Short 
description</option><option value="caller_id" role="option">Caller</option><option value="priority" 
role="option">Priority</option><option value="state" role="option">State</option><option 
value="category" role="option">Category</option><option value="assignment_group" 
role="option">Assignment group</option><option value="assigned_to" role="option">Assigned to</option> 
<option value="sys_updated_on" role="option">Updated</option><option value="sys_updated_by" 
role="option">Updated by</option></select>

通过 xpath：

//*[@id="d5f43fd407945410af12f2ae7c1ed05c_select"]

给我以下错误：

DevTools listening on ws://127.0.0.1:49915/devtools/browser/30b98d3d-0779-4d85-86bc-9af3a24726a2
[7012:3772:0417/104241.308:ERROR:browser_switcher_service.cc(238)] XXX Init()
Traceback (most recent call last):
  File "Test.py", line 39, in <module>
    element = driver.find_element_by_class_name('form-control default-focus-outline')
  File "C:\Python38\Lib\site-packages\selenium\webdriver\remote\webdriver.py", line 564, in 
find_element_by_class_name
    return self.find_element(by=By.CLASS_NAME, value=name)
  File "C:\Python38\Lib\site-packages\selenium\webdriver\remote\webdriver.py", line 976, in 
find_element
return self.execute(Command.FIND_ELEMENT, {
  File "C:\Python38\Lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
self.error_handler.check_response(response)
  File "C:\Python38\Lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in 
check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate 
element: {"method":"css selector","selector":".form-control default-focus-outline"}
  (Session info: chrome=81.0.4044.113)

上面的消息有两个不同的错误：

1) [7012:3772:0417/104241.308:ERROR:browser_switcher_service.cc(238)] XXX 初始化()

2) 无法定位 元素：{"method":"css selector","selector":".form-control default-focus-outline"}

需要有关如何解决这些问题的帮助。

Answer 1

尝试使用 WebDriverWait 解决您的问题。如果您仍然遇到问题，请检查您的元素是否存在于 iframe 中

wait = WebDriverWait(driver, 30)
wait.until(EC.element_to_be_clickable((By.XPATH, "//select[@id='form-control default-focus-outline']/option[text()='Short description']")))

注意：请在您的解决方案中添加以下导入

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

工作解决方案：

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.ui import Select


chrome_options = webdriver.ChromeOptions()
options = Options()
chrome_options.add_argument("--disable-notifications")



driver = webdriver.Chrome(executable_path="C:\New folder\chromedriver.exe",chrome_options=chrome_options)
username = '********'
password = '********'


url = 'https://*******.service-now.com/'
driver.get(url)
driver.maximize_window()
wait = WebDriverWait(driver, 20)
iframe = WebDriverWait(driver, 20).until(EC.presence_of_element_located((By.ID, 'gsft_main')))
driver.switch_to.frame(iframe)
wait.until(EC.presence_of_element_located((By.ID, "user_name"))).send_keys(username)
wait.until(EC.presence_of_element_located((By.ID, "user_password"))).send_keys(password)
wait.until(EC.presence_of_element_located((By.ID, "sysverb_login"))).click()
driver.switch_to.default_content()

wait.until(EC.element_to_be_clickable((By.XPATH, "//input[@id='filter']"))).send_keys("Incident")
wait.until(EC.element_to_be_clickable((By.XPATH, "//div[@class='sn-widget-list-title ng-binding'][contains(text(),'Open - Unassigned')]"))).click()

iframe = WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.ID, 'gsft_main')))
driver.switch_to.frame(iframe)
print wait.until(EC.element_to_be_clickable((By.XPATH, "//h2[contains(@class,'navbar-title list_title')]"))).text

element=wait.until(EC.element_to_be_clickable((By.XPATH, "//span[@class='input-group-addon input-group-select']//select")))
element=wait.until(EC.presence_of_element_located((By.XPATH, "//span[@class='input-group-addon input-group-select']//select")))
all_options = element.find_elements_by_tag_name("option")
for option in all_options:
    print("Value is: %s" % option.get_attribute("value"))
    option.click()
select = Select(element)
select.select_by_visible_text("Short description")