Python - Selenium 下一页

Question

我正在尝试制作一个抓取应用程序来抓取 Hants.gov.uk，现在我正在处理它，只需单击页面而不是抓取。当它到达第 1 页的最后一行时，它刚刚停止，所以我所做的是让它单击“下一页”按钮，但首先它必须返回到原始 URL。它点击第 2 页，但在第 2 页被抓取后，它不会转到第 3 页，它只是重新启动第 2 页。

有人可以帮我解决这个问题吗？

代码：

import time
import config # Don't worry about this. This is an external file to make a DB
import urllib.request
from bs4 import BeautifulSoup
from selenium import webdriver

url = "https://planning.hants.gov.uk/SearchResults.aspx?RecentDecisions=True"

driver = webdriver.Chrome(executable_path=r"C:\Users\Goten\Desktop\chromedriver.exe")
driver.get(url)

driver.find_element_by_id("mainContentPlaceHolder_btnAccept").click()

def start():
    elements = driver.find_elements_by_css_selector(".searchResult a")
    links = [link.get_attribute("href") for link in elements]

    result = []
    for link in links:
        if link not in result:
            result.append(link)
        else:
            driver.get(link)
            goUrl = urllib.request.urlopen(link)
            soup = BeautifulSoup(goUrl.read(), "html.parser")
            #table = soup.find_element_by_id("table", {"class": "applicationDetails"})
            for i in range(20):
                pass # Don't worry about all this commented code, it isn't relevant right now
                #table = soup.find_element_by_id("table", {"class": "applicationDetails"})
                #print(table.text)
            #   div = soup.select("div.applicationDetails")
            #   getDiv = div[i].split(":")[1].get_text()
            #   log = open("log.txt", "a")
            #   log.write(getDiv + "\n")
            #log.write("\n")

start()
driver.get(url)

for i in range(5):
    driver.find_element_by_id("ctl00_mainContentPlaceHolder_lvResults_bottomPager_ctl02_NextButton").click()
    url = driver.current_url
    start()
    driver.get(url)
driver.close()

Answer 1

试试这个：

import time
# import config # Don't worry about this. This is an external file to make a DB
import urllib.request
from bs4 import BeautifulSoup
from selenium import webdriver

url = "https://planning.hants.gov.uk/SearchResults.aspx?RecentDecisions=True"

driver = webdriver.Chrome()
driver.get(url)

driver.find_element_by_id("mainContentPlaceHolder_btnAccept").click()

result = []


def start():
    elements = driver.find_elements_by_css_selector(".searchResult a")
    links = [link.get_attribute("href") for link in elements]
    result.extend(links)

def start2():
    for link in result:
        # if link not in result:
        #     result.append(link)
        # else:
            driver.get(link)
            goUrl = urllib.request.urlopen(link)
            soup = BeautifulSoup(goUrl.read(), "html.parser")
            #table = soup.find_element_by_id("table", {"class": "applicationDetails"})
            for i in range(20):
                pass # Don't worry about all this commented code, it isn't relevant right now
                #table = soup.find_element_by_id("table", {"class": "applicationDetails"})
                #print(table.text)
            #   div = soup.select("div.applicationDetails")
            #   getDiv = div[i].split(":")[1].get_text()
            #   log = open("log.txt", "a")
            #   log.write(getDiv + "\n")
            #log.write("\n")


while True:
    start()
    element = driver.find_element_by_class_name('rdpPageNext')
    try:
        check = element.get_attribute('onclick')
        if check != "return false;":
            element.click()
        else:
            break

    except:
        break

print(result)
start2()
driver.get(url)

Answer 2

根据网址https://planning.hants.gov.uk/SearchResults.aspx?RecentDecisions=True点击所有页面，您可以使用以下解决方案：

• 代码块：

  from selenium import webdriver
  from selenium.webdriver.chrome.options import Options
  from selenium.webdriver.support.ui import WebDriverWait
  from selenium.webdriver.common.by import By
  from selenium.webdriver.support import expected_conditions as EC
  
  options = Options()
  options.add_argument("start-maximized")
  options.add_argument("disable-infobars")
  options.add_argument("--disable-extensions")
  driver = webdriver.Chrome(chrome_options=options, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')
  driver.get('https://planning.hants.gov.uk/SearchResults.aspx?RecentDecisions=True')
  WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.ID, "mainContentPlaceHolder_btnAccept"))).click()
  numLinks = len(WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.CSS_SELECTOR, "div#ctl00_mainContentPlaceHolder_lvResults_topPager div.rdpWrap.rdpNumPart>a"))))
  print(numLinks)
  for i in range(numLinks):
      print("Perform your scrapping here on page {}".format(str(i+1)))
      WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//div[@id='ctl00_mainContentPlaceHolder_lvResults_topPager']//div[@class='rdpWrap rdpNumPart']//a[@class='rdpCurrentPage']/span//following::span[1]"))).click()
  driver.quit()
  

• 控制台输出：

  8
  Perform your scrapping here on page 1
  Perform your scrapping here on page 2
  Perform your scrapping here on page 3
  Perform your scrapping here on page 4
  Perform your scrapping here on page 5
  Perform your scrapping here on page 6
  Perform your scrapping here on page 7
  Perform your scrapping here on page 8
  

Answer 3

嗨@Feitan Portor，您编写的代码绝对完美，您被重定向回第一页的唯一原因是因为您在最后一个 for 循环中给出了url = driver.current_url，它是保持静态的 url，只有引发下一次点击事件的 java 脚本，因此只需删除 url = driver.current_url 和 driver.get(url)

你很高兴我已经测试了我自己 还要获取你的刮板所在的当前页面，只需在 for 循环中添加这部分，这样你就可以知道你的刮板在哪里：

ss = driver.find_element_by_class_name('rdpCurrentPage').text
    print(ss)

希望这能解决你的困惑