使用Selenium Webdriver向下滚动页面 [英] Scrolling down a page with Selenium Webdriver

问题描述

我有一个动态页面，当用户向下滚动页面时，该页面会加载产品.我想获取显示页面上呈现的产品总数.目前，我正在使用下面的代码进入最底层，直到显示所有产品为止.

I have a dynamic page that loads products when the user scrolls down a page. I want to get the total number of products rendered on the display page. Currently I am using the following code to get to the bottom until all the products are being displayed.

elems = WebDriverWait(self.driver, 30).until(EC.presence_of_all_elements_located((By.CLASS_NAME, "x")))
print len(elems)
a = len(elems)
self.driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
time.sleep(4)
elem1 = WebDriverWait(self.driver, 30).until(EC.presence_of_all_elements_located((By.CLASS_NAME, "x")))
b = len(elem1)
while b > a:
    self.driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
    time.sleep(4)
    elem1 = WebDriverWait(self.driver, 30).until(EC.presence_of_all_elements_located((By.CLASS_NAME, "x")))
    a = b
    b = len(elem1)
print b

这很好，但是我想知道是否有更好的选择吗?

推荐答案

您可以使用此行代码轻松执行此操作

You can perform this action easily using this line of code

driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

如果您想永远向下滚动，则应尝试此操作.

And if you want to scroll down for ever you should try this.

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
import time

driver = webdriver.Firefox()
driver.get("https://twitter.com/BarackObama")

while True:
    driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
    time.sleep(3)

我不确定关于时间.sleep(x值)导致加载数据的时间更长或更短.. 有关更多信息，请检查

I am not sure about time.sleep(x value) cause loading data my take longer .. or less .. for more information please check the official Doc page

玩得开心:)

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