如何跳至下一页？

Question

我只是想抓取一个网站，但被卡住了。这是我的代码：

from selenium import webdriver

driver = webdriver.Firefox(executable_path='location of the geckodriver')
driver.get('http://kernyilvantartas.zalajaras.hu/public/')
driver.find_element_by_xpath("""//*[@id="btn"]""").click()
# the dropdown menu
driver.find_element_by_xpath("""//*[@id="lap"]""").click()
# click on page 2
driver.find_element_by_xpath("""//*[@id="lap"]/option[2]""").click()

在click（）之后，它仅突出显示下拉菜单上的第二个选项，但不跳到下一页。有什么主意吗？

Answer 1

您要交互的元素是<select>节点，因此您需要使用Select类，并且可以使用以下Locator Strategies中的任何一个：

• 使用CSS_SELECTOR和select_by_value()方法：

  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
  from selenium.webdriver.support.select import Select
  
  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:\Utility\BrowserDrivers\chromedriver.exe')
  driver.get('http://kernyilvantartas.zalajaras.hu/public/')
  WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "input#btn"))).click()
  select = Select(WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "select[name='lap']"))))
  select.select_by_value("2")
  

• 使用XPATH和select_by_visible_text()方法：

  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
  from selenium.webdriver.support.select import Select
  
  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:\Utility\BrowserDrivers\chromedriver.exe')
  driver.get('http://kernyilvantartas.zalajaras.hu/public/')
  WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//input[@id='btn']"))).click()
  select = Select(WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//select[@name='lap']"))))
  select.select_by_visible_text("2")