如何通过Python使用ChromeDriver Chrome和Selenium在页面上打印类别链接？

Question

我正在尝试使用Python3使Chrome Webdriver和Selenium在www.jtinsight.com网页上标识各种“分类”类别，并从中打印出类别标题。 到目前为止，使用下面我能做的最好的代码来打印出前两个-“所有类别”和“汽车（私人）”。 我已经确定这两个的html与其他HTML不同，并尝试了许多不同的代码行，这些代码行我已在代码中注释掉，但无法识别正确的标记/类/ xpath等。任何帮助将不胜感激。 。

from selenium import webdriver
from selenium.webdriver.common.by import By

# Creating the WebDriver object using the ChromeDriver
driver = webdriver.Chrome()

# Directing the driver to the defined url
driver.get("https://www.jtinsight.com/JTIRA/JTIRA.aspx#!/main")

# Locate the categories

# Each code line runs but only returns the first two categories
# categories = driver.find_elements_by_xpath('//div[@class="col-md-3 col-sm-4 col-xs-6"]')
# categories = driver.find_elements_by_xpath('//div[@class="mainCatEntry"]')
# categories = driver.find_elements_by_xpath('//div[@class="Description"]')

# Process ran but finished with exit code 0
# categories = driver.find_elements_by_xpath('//*[@class="col-md-3 col-sm-4 col-xs-6 ng-scope"]')
# categories = driver.find_elements_by_xpath('//div[@class="col-md-3 col-sm-4 col-xs-6 ng-scope"]')
# categories = driver.find_elements_by_partial_link_text('//href[@class="divLink"]')
# categories = driver.find_elements_by_tag_name('bindonce')
# categories = driver.find_elements_by_xpath('//div[@class="divLink"]')

# Error before finished running
# categories = driver.find_elements(By.CLASS_NAME, "col-md-3 col-sm-4 col-xs-6 ng-scope")
# categories = driver.find_elements(By.XPATH, '//div bindonce[@class="col-md-3 col-sm-4 col-xs-6 ng-scope"]')
# categories = driver.find_elements_by_class_name('//div bindonce[@class="col-md-3 col-sm-4 col-xs-6 ng-scope"]')

# Print out all categories on current page
num_page_items = len(categories)
print(num_page_items)
for i in range(num_page_items):
    print(categories[i].text)

# Clean up (close browser once task is completed.)
driver.close()

Answer 1

这确实是一个时间问题。 如果我在收集类别之前添加了“ sleep（5）”，它会找到全部24个。有趣的是，当我使用WebDriverWait时，它仍然只能提取2个项目。 因此，为强制驱动程序执行更多工作，我扩展了xpath。 以下为我工作：

categories = WebDriverWait(driver, 10).until(
EC.visibility_of_all_elements_located((By.XPATH, '//div[@class="mainCatEntry"]/div[@class="Description"]')))

Answer 2

要在网页https://www.jtinsight.com/JTIRA/JTIRA.aspx#!/main上标识各种分类类别，并打印类别标题，例如， 所有类别 ， 汽车（私人）等，您需要向下滚动一点，并为WebIdr_of_all_elements_located visibility_of_all_elements_located()引入WebDriverWait ，您可以使用以下解决方案：

• 代码块：

   from selenium import webdriver from selenium.webdriver.common.by import By from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.support import expected_conditions as EC options = webdriver.ChromeOptions() options.add_argument("start-maximized") options.add_argument('disable-infobars') driver=webdriver.Chrome(chrome_options=options, executable_path=r'C:\\Utility\\BrowserDrivers\\chromedriver.exe') driver.get("https://www.jtinsight.com/JTIRA/JTIRA.aspx#!/main") driver.execute_script("arguments[0].scrollIntoView(true);",WebDriverWait(driver, 30).until(EC.visibility_of_element_located((By.XPATH, "//span[@class='ng-scope' and text()='Classifieds']")))); print([elem.get_attribute("innerHTML") for elem in WebDriverWait(driver, 30).until(EC.visibility_of_all_elements_located((By.XPATH, "//div[@class='mainCatEntry']//div[@class='Description']")))])