如何使用 Selenium 和 Python 从 link 中提取动态图像?

How to extract the dynamic images from the link using Selenium and Python?

我正在尝试从 link 下载图像。既然是动态渲染图,请问如何下载呢?

现在我试图获取图像 url,但这是渲染图像我能够获取第一个 link。

代码如下:

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.ui import Select
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import TimeoutException

executable_path = "/usr/bin/chromedriver"
chrome_options = Options()
os.environ["webdriver.chrome.driver"] = executable_path
driver = webdriver.Chrome(executable_path=executable_path, chrome_options=chrome_options)
driver.get("https://www.macfarlanepartners.com/projects/park-fifth-mid-rise/")
driver.maximize_window()
print "Entered"
elements = driver.find_elements_by_xpath("""/html/body/div/div/div[3]/div[1]/div[1]""")
time.sleep(5)
for i in  elements:
    image = i.find_element_by_tag_name("img")
    img_src = image.get_attribute("src")
    print img_src

driver.close()

输出

我只得到第一张图片 link:

https://www.macfarlanepartners.com/wp-content/uploads/2016/08/Park-Fifth-Mid-Rise-Large-Photo-1-480x240.jpg

还有没有办法自动找到src和img标签下载图片,而不是根据不同的网站搜索xpath?

我认为你需要第二个循环:

for i in elements:
    images = i.find_elements_by_tag_name("img")
    for img in images:
        img_src = img.get_attribute("src")
        print img_src   

您只能检索第一个 link 作为 定位器策略 find_elements_by_xpath("""/html/body/div/div/div[3]/div[1]/div[1]""") returns 只有一个元素,这就是为什么for() 循环仅迭代一次以提取第一个 <img> 标记的 src 属性的值。

更好的解决方案是在 xpath 中包含 <img> 标签,如下所示:

elements = driver.find_elements_by_xpath("""/html/body/div/div/div[3]/div[1]/div[1]/img""")
for i in  elements:
    img_src = i.get_attribute("src")
    print img_src

您将能够检索 3 link 如下:

https://www.macfarlanepartners.com/wp-content/uploads/2016/08/Park-Fifth-Mid-Rise-Large-Photo-1-480x240.jpg
https://www.macfarlanepartners.com/wp-content/uploads/2016/08/Park-Fifth-Mid-Rise-Large-Photo-2-480x240.jpg
https://www.macfarlanepartners.com/wp-content/uploads/2016/08/Park-Fifth-Mid-Rise-Large-Photo-3-1-480x240.jpg