使用 Selenium 和 Python 抓取网站时无法找到分页链接

Question

I'm learning to use Selenium for web scraping. I have a couple of questions with the website I'm working with:

-The website has multiple pages to go over and I can't seem to find a way to locate the pages' paths and go over them. For example, the following code returns link_page as NoneType .

from selenium import webdriver

import time
driver = webdriver.Chrome('chromedriver')

driver.get('https://www.oddsportal.com/soccer/england/premier-league')
time.sleep(0.5)
results_button = driver.find_element_by_xpath('/html/body/div[1]/div/div[2]/div[6]/div[1]/div/div[1]/div[2]/div[1]/div[2]/ul/li[3]/span')
results_button.click()
time.sleep(3)

season_button = driver.find_element_by_xpath('/html/body/div[1]/div/div[2]/div[6]/div[1]/div/div[1]/div[2]/div[1]/div[3]/ul/li[2]/span/strong/a')
season_button.click()

link_page = driver.find_element_by_xpath('/html/body/div[1]/div/div[2]/div[6]/div[1]/div/div[1]/div[2]/div[1]/div[6]/div/a[3]/span').get_attribute('href')
print(link_page.text)
driver.get(link_page)

-For some reason I have to use the results_button to be able to get the href of matches. For example, the following code tries to go the page directy (as an attempt to circumvent problem 1 above), but the link_page returns a NoSuchElementException error.

from selenium import webdriver
import time

driver = webdriver.Chrome('chromedriver')
driver.get('https://www.oddsportal.com/soccer/england/premier-league/results/#/page/2')
time.sleep(3)

link_page = driver.find_element_by_xpath('/html/body/div[1]/div/div[2]/div[6]/div[1]/div/div[1]/div[2]/div[1]/div[6]/table/tbody/tr[11]/td[2]/a').get_attribute('href')
print(link_page.text)
driver.get(link_page)

Answer 1

To locate the pages to go over them using Selenium you need to induce WebDriverWait for the visibility_of_all_elements_located() and you can use the following Locator Strategies :

• Using XPATH :

   driver.get('https://www.oddsportal.com/soccer/england/premier-league/') WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//a[text()='RESULTS']"))).click() WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//a[text()='2018/2019']"))).click() print([my_elem.get_attribute("href") for my_elem in WebDriverWait(driver, 10).until(EC.visibility_of_all_elements_located((By.XPATH, "//span[@class='active-page']//following::a[@x-page]/span[not(contains(., '|')) and not(contains(., '»'))]/..")))])

• Console Output:

   ['https://www.oddsportal.com/soccer/england/premier-league-2018-2019/results/#/page/2/', 'https://www.oddsportal.com/soccer/england/premier-league-2018-2019/results/#/page/3/', 'https://www.oddsportal.com/soccer/england/premier-league-2018-2019/results/#/page/4/', 'https://www.oddsportal.com/soccer/england/premier-league-2018-2019/results/#/page/5/', 'https://www.oddsportal.com/soccer/england/premier-league-2018-2019/results/#/page/6/', 'https://www.oddsportal.com/soccer/england/premier-league-2018-2019/results/#/page/7/', 'https://www.oddsportal.com/soccer/england/premier-league-2018-2019/results/#/page/8/']

• Note : You have to add the following imports:

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