首页 > 解决方案 > 使用 Selenium 和 Python 进行网络抓取时出现问题

问题描述

我正在尝试抓取这个网站

https://maroof.sa/BusinessType/BusinessesByTypeList?bid=14&sortProperty=BestRating&DESC=True 有一个按钮,点击后可以加载更多内容,它会显示更多内容而不改变URL 我做了一段代码来加载所有首先提取内容然后提取我需要的数据的所有 URL 然后转到每个链接并抓取数据

url = "https://maroof.sa/BusinessType/BusinessesByTypeList?bid=26&sortProperty=BestRating&DESC=True"
driver = webdriver.Chrome()
driver.get(url)
# button = driver.find_element_by_xpath('//*[@id="loadMore"]/button')
num = 1
while num <= 507:
    sleep(4)
    button = WebDriverWait(driver, 50).until(EC.element_to_be_clickable((By.XPATH, '//*[@id="loadMore"]/button')))
    button.click()
    print(num)
    num += 1
links = [l.get_attribute('href') for l in WebDriverWait(driver, 40).until(EC.visibility_of_all_elements_located((By.XPATH, '//*[@id="list"]/a')))]

它似乎可以工作,但有时它不会单击加载内容的按钮,它会意外单击其他内容并出错,我必须重新开始你能帮我吗?

标签: pythonselenium-webdriverweb-scrapinglazy-loadingwebdriverwait

解决方案


要抓取网站单击按钮以加载更多内容,您需要诱导WebDriverWaitelement_to_be_clickable()您可以使用以下 定位器策略

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

options = webdriver.ChromeOptions() 
options.add_argument("start-maximized")
options.add_experimental_option("excludeSwitches", ["enable-automation"])
options.add_experimental_option('useAutomationExtension', False)
driver = webdriver.Chrome(options=options, executable_path=r'C:\WebDrivers\chromedriver.exe')
driver.get('https://maroof.sa/BusinessType/BusinessesByTypeList?bid=26&sortProperty=BestRating&DESC=True')
while True:
    try:
    driver.execute_script("return arguments[0].scrollIntoView(true);", WebDriverWait(driver, 5).until(EC.visibility_of_element_located((By.XPATH, "//button[@class='btn btn-primary']"))))
    WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//button[@class='btn btn-primary']"))).click()
    except TimeoutException:
    break
print([l.get_attribute('href') for l in WebDriverWait(driver, 10).until(EC.visibility_of_all_elements_located((By.XPATH, '//*[@id="list"]/a')))])
driver.quit()

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