使用 Selenium Python 滚动到 Whatsapp 网页中聊天列表的末尾

Question

我正在尝试使用 selenium python 向下滚动到 Whatsapp 网页聊天列表中的最后一个联系人。

我收到以下错误消息：

selenium.common.exceptions.JavascriptException: Message: javascript error: arguments[0].scrollIntoView is not a function
  (Session info: chrome=90.0.4430.212)

有时：

selenium.common.exceptions.StaleElementReferenceException: Message: stale element reference: element is not attached to the page document
  (Session info: chrome=90.0.4430.212)

这是代码：

#Trial 1
# driver.execute_script("window.scrollTo(0, 1000);")

#Trial 2
# html = driver.find_element_by_tag_name('html')
# html.send_keys(Keys.END)

#Trial 3
# driver. execute_script("window.scrollTo(0,document.body.scrollHeight)")

#Trial 4
#This class is related to the side div 
# test2 = driver.find_element_by_xpath("//div[@class='_1C2Q3 F-0gY']")
# driver.execute_script('arguments[0].scrollIntoView();',test2) #tried this
# test2.send_keys(Keys.PAGE_DOWN) # and also this

#Trial 5
#This class is related to the contacts
recentList = driver.find_elements_by_xpath("//span[@class='N2dUK']")
# driver.execute_script('arguments[0].scrollIntoView()',recentList) #tried this

for list in recentList :
    # driver.execute_script("arguments[0].scrollIntoView();", list[:-1] )
    # driver.execute_script('arguments[0].scrollTop = arguments[0].scrollHeight', list)
    # time.sleep(1)
    # driver.execute_script("window.scrollTo(0, 500);")

    # print('RECENT LIST')
    print(list.text)

我的问题：

如何在whatsapp网页中滚动到聊天列表的末尾

Answer 1

我在whatsapp 中也遇到同样的问题。我用这段代码解决了：

driver.find_element(By.ID, 'pane-side').send_keys(Keys.PAGE_DOWN)

我发送了完整的代码，我测试了它并且它有效：

导入库：

import tempfile
import time

from selenium import webdriver 
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys

逻辑基础：

driver = webdriver.Firefox()
driver.get('https://web.whatsapp.com/') 
driver.maximize_window()

time.sleep(25)

phone=[] 
date=[] 
msg=[] 

SCROLL_PAUSE_TIME = 5.5

while True:

    elements = WebDriverWait(driver,40).until(lambda driver:driver.find_elements(By.XPATH,'//div[@class="lhggkp7q ln8gz9je rx9719la"]')) 
    
    #driver.find_element(By.XPATH, './/div[@class="g0rxnol2 _3fGK2"]').send_keys(Keys.PAGE_DOWN)
    driver.find_element(By.ID, 'pane-side').send_keys(Keys.PAGE_DOWN)

    rep=0
    
    for element in elements:
        #print(interesado)
        elem1 = element.find_element(By.XPATH, './/div[@class="_21S-L"]').text 
        #print(contenido1)
        if elem1 not in phone:
            phone.append(elem1)
            print(elem1)
            
            elem2=element.find_element(By.XPATH, './/span[@class="aprpv14t"]').text 
            date.append(elem2)
            #print(elem2)
            
            elem3=element.find_element(By.XPATH, './/div[@class="vQ0w7"]').text 
            msg.append(elem3) 
            #print(elem3)
        else:
            rep+=1

    time.sleep(SCROLL_PAUSE_TIME)

    if rep > 2:
        print('exit infinite loop')
        break

打印结果：

import pandas as pd 

result=[phone,date,msg] 
df=pd.DataFrame(result).T

print(len(phone))
print(phone)

df.columns=['PHONE','DATE','MESSAGE']

df

Answer 2

尝试下面的代码：

driver.execute_script("var scrollingElement = (document.scrollingElement || document.body);scrollingElement.scrollTop = scrollingElement.scrollHeight;")