javascript - JavascriptException:消息:javascript 错误:无法读取通过 Python Selenium 执行 JavaScript 的未定义错误的属性“单击”
问题描述
我有以下代码,我在其中输入页面并搜索产品,我想执行 JavaScript 代码
from selenium import webdriver
from getpass import getpass
#-------------------------------------------PRODUCT SEARCH-----------------------------------------------------------------------------------
options = webdriver.ChromeOptions()
options.add_experimental_option("excludeSwitches", ["enable-automation"])
options.add_experimental_option('useAutomationExtension', False)
options.add_argument("--disable-blink-features=AutomationControlled")
driver = webdriver.Chrome("C:\\Users\\stbaz\\Documents\\Python\\ChromeTools\\chromedriver.exe", options=options)
driver.get("https://www.innvictus.com/")
product_textbox = driver.find_element_by_id("is-navigation__search-bar__input")
product_textbox.send_keys("FW7093")
product_textbox.submit()
#------------------------------------------PRODUCT SEARCH END--------------------------------------------------------------------------------------
driver.implicitly_wait(5)
js='javascript:document.getElementsByClassName("buy-button buy-button--sticky buy-button--buy-now visible-xs visible-sm")[1].click();window.open("/checkout")'
driver.execute_script(js)
但我收到以下错误
selenium.common.exceptions.JavascriptException: Message: javascript error: Cannot read property 'click' of undefined
我可以在 chrome 中手动运行该代码,我使用书签,但我想在 Python 中运行它,我做错了什么?
解决方案
所以,我在没有使用的情况下包含了主程序JavaScript
;但是,在主程序参考下,我也包含了使用方法JavaScript
。
为了在没有 JS 的情况下实现这个解决方案,我曾经xpath
验证页面加载成功。然后,在那之后,我找到xpath
了搜索按钮
//nav[@class='is-navigation']//span[contains(@class, 'search-btn')]
一旦我发现了xpath
这个,我点击了搜索按钮,然后我创建了一个搜索特定产品的方法。在我的例子中,我以“匡威”鞋为例。
def search_for_text(driver : ChromeDriver, text : str):
driver.find_element(By.XPATH, "//form[@id='formSearch']//input[contains(@data-options, 'SearchBox')]").send_keys(text)
time.sleep(2)
if driver.find_element(By.XPATH, "//form[@id='formSearch']//input[contains(@data-options, 'SearchBox')]").get_attribute('value').__len__() != text.__len__():
raise Exception("Failed to populate our search textbox")
else:
driver.find_element(By.XPATH, "//form[@id='formSearch']//input[contains(@data-options, 'SearchBox')]").send_keys(Keys.RETURN)
time.sleep(2)
wait_displayed(driver, "//div[@class='is-pw__products']//div[contains(@class, 'products-list')]", 30)
print(f'Your search for {text} was successful')
在该方法中,您会看到我曾经wait_displayed
验证我的产品列表是否正确显示。
主程序 - 供参考
from selenium import webdriver
from selenium.webdriver.chrome.webdriver import WebDriver as ChromeDriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait as DriverWait
from selenium.webdriver.support import expected_conditions as DriverConditions
from selenium.common.exceptions import WebDriverException
from selenium.webdriver.common.keys import Keys
import time
def get_chrome_driver():
"""This sets up our Chrome Driver and returns it as an object"""
path_to_chrome = "F:\Selenium_Drivers\Windows_Chrome87_Driver\chromedriver.exe"
chrome_options = webdriver.ChromeOptions()
# Browser is displayed in a custom window size
chrome_options.add_argument("window-size=1500,1000")
return webdriver.Chrome(executable_path = path_to_chrome,
options = chrome_options)
def wait_displayed(driver : ChromeDriver, xpath: str, int = 5):
try:
DriverWait(driver, int).until(
DriverConditions.presence_of_element_located(locator = (By.XPATH, xpath))
)
except:
raise WebDriverException(f'Timeout: Failed to find {xpath}')
def is_displayed(driver : ChromeDriver, xpath: str, int = 5):
try:
webElement = DriverWait(driver, int).until(
DriverConditions.presence_of_element_located(locator = (By.XPATH, xpath))
)
return True if webElement != None else False
except:
return False
def click_search(driver : ChromeDriver):
driver.find_element(By.XPATH, "//nav[@class='is-navigation']//span[contains(@class, 'search-btn')]").click()
time.sleep(2)
if is_displayed(driver, "//form[@id='formSearch']//input[contains(@data-options, 'SearchBox')]") == False:
raise Exception("Failed to click our search button")
else:
print('You clicked the Search Button Successfully')
def search_for_text(driver : ChromeDriver, text : str):
driver.find_element(By.XPATH, "//form[@id='formSearch']//input[contains(@data-options, 'SearchBox')]").send_keys(text)
time.sleep(2)
if driver.find_element(By.XPATH, "//form[@id='formSearch']//input[contains(@data-options, 'SearchBox')]").get_attribute('value').__len__() != text.__len__():
raise Exception("Failed to populate our search textbox")
else:
driver.find_element(By.XPATH, "//form[@id='formSearch']//input[contains(@data-options, 'SearchBox')]").send_keys(Keys.RETURN)
time.sleep(2)
wait_displayed(driver, "//div[@class='is-pw__products']//div[contains(@class, 'products-list')]", 30)
print(f'Your search for {text} was successful')
# Gets our chrome driver and opens our site
chrome_driver = get_chrome_driver()
chrome_driver.get("https://www.innvictus.com/")
wait_displayed(chrome_driver, "(//nav[@class='is-navigation']//div[contains(@class, 'desktop-menu')]//a[contains(@href, 'lanzamientos')])[1]")
wait_displayed(chrome_driver, "//div[@class='content-page']//div[@class='scrolling-wrapper-flexbox']")
wait_displayed(chrome_driver, "//nav[@class='is-navigation']//span[contains(@class, 'search-btn')]")
click_search(chrome_driver)
search_for_text(chrome_driver, "Converse")
chrome_driver.quit()
chrome_driver.service.stop()
使用 JAVASCRIPT 单击搜索按钮的命令
jsText = "document.querySelector('nav').querySelector('div .is-navigation__main').querySelector('div .is-navigation__main__right').querySelector('span').click()"
driver.execute_script(jsText)
方法
def click_search_using_javaScript(driver : ChromeDriver):
jsText = "document.querySelector('nav').querySelector('div .is-navigation__main').querySelector('div .is-navigation__main__right').querySelector('span').click()"
driver.execute_script(jsText)
time.sleep(2)
if is_displayed(driver, "//form[@id='formSearch']//input[contains(@data-options, 'SearchBox')]") == False:
raise Exception("Failed to click our search button")
else:
print('You clicked the Search Button Successfully')
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