如何让Chrome Webdriver和Selenium在python中识别页面上的类别链接?

JamesLC • 4 年前 • 599 次点击

使用Python3,我试图让Chrome Webdriver和Selenium在www.jtinsight.com网页上识别各种“分类”类别,并从中打印出类别标题。到目前为止,使用下面的代码,我能做的就是让它打印出前两个-“所有类别”和“汽车(私人)”。我已经确定这两个html与其他html不同,并尝试了许多不同的代码行,我在代码中列出了注释,但无法识别正确的标记/class/xpath等。任何帮助都将不胜感激。

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()

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599 次点击

文章 [ 2 ] | 最新文章 4 年前

• 1 楼

DebanjanB 5 年前

确定 分类表 网页上的类别 https://www.jtinsight.com/JTIRA/JTIRA.aspx#!/main 并打印类别标题,例如。 所有类别 , 汽车(私人) 等等,你需要纸卷降低一点并诱导 网络驱动器 对于 visibility_of_all_elements_located() 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']")))])

• 2 楼

Breaks Software 5 年前

这真是个时间问题。如果我在收集分类之前加了一个“睡眠(5)”,它会找到所有24个。有趣的是,当我使用WebDriverWait时,它仍然只会拉2个项目。所以,为了迫使驱动程序做更多的工作,我扩展了xpath。以下对我有效:

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

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