Selenium Webdriver有时找不到元素

如何解决Selenium Webdriver有时找不到元素

我正在尝试在Tripadvisor上找到搜索框，但有时无法找到它。 （我收到超时错误）。我添加了WebDriverWait和time.sleep，但无济于事。我仍处于测试之中，因此下面有一部分代码需要人工干预。

编辑：更改为time.sleep（10）而不是5秒会有所帮助。但这会使代码非常慢。希望改为使用WebDriverWait ...

searchbox = WebDriverWait(driver,20).until(EC.presence_of_element_located((By.XPATH,"//input[@placeholder='Where to?']")))

下面是我的完整代码，我必须在每个国家/地区多次找到搜索框。

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

driver = webdriver.Chrome(executable_path=r'C:\\Users\\user\\Downloads\\chromedriver.exe') 
driver.get("https://www.tripadvisor.com.sg/Hotels-g293951-Malaysia-Hotels.html")

此处的人为干预：单击随机的入住日期，退房日期，然后单击“更新”

countries3 = ["France","Qatar","Brunei Darussalam","Hong Kong"]
countries4 = ["Germany","The Netherlands","Nigeria","South Africa","Russia"]
countries2 = ["New York","Saudi Arabia","Sri Lanka","Switzerland","Turkey"]
countries1 = ["United Arab Emirates","New Zealand","Thailand","India"]
countries5 = ["Vietnam","Australia","Malaysia","Cambodia","Indonesia","Laos","Myanmar","Philippines","Vietnam","Canada","China","Japan","Taiwan","United Kingdom","United States","Bangladesh","Belgium","Egypt","Finland"]
countries = countries1+countries2+countries3+countries4+countries5

for country in countries: 
    driver.get(URL)
    driver.implicitly_wait(10)
    time.sleep(5)
    searchbox = WebDriverWait(driver,"//input[@placeholder='Where to?']")))
    searchbox.send_keys(country) #select your destination here 
    time.sleep(2)
    possible = driver.find_elements_by_class_name("_3a_rGDNB")
    for i in possible:
        if i.text == country:
            i.click()
            break
            
    time.sleep(5)

    hotels = WebDriverWait(driver,'//*[@title="Hotels"]')))
    driver.execute_script("arguments[0].click();",hotels)
    time.sleep(3)

解决方法

要在search input框中输入值

使用WebDriverWait（）并等待element_to_be_clickable（）及其后的xpath。

searchbox = WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.XPATH,"//input[@aria-label='Search']")))

,

要在Tripadvisor而不是presence_of_element_located()上找到搜索框，您必须为element_to_be_clickable()引入WebDriverWait，并且可以使用以下任一Locator Strategies ：

• 使用CSS_SELECTOR：

  searchbox = WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.CSS_SELECTOR,"input[name='q'][title='Search']")))
  

• 使用XPATH：

  searchbox = WebDriverWait(driver,"//input[@name='q' and @title='Search']")))
  

• 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