使用带有 Chrome 驱动程序的 Selenium Python 截取完整网页的屏幕截图

问题描述 投票:0回答:1

我想截取网站整个页面的屏幕截图。以下是网站条件

  1. 需要使用登录表单进行身份验证
  2. 我要截图的网站是Javascript渲染的(动态渲染),不是静态渲染 (
    body
    标签内只是
    script
    标签)

我确实尝试了一些我能找到的解决方案,但没有一个能按我的意愿工作。以下是我尝试过的一些尝试

  1. 链接这个需要使用headless chrome,这让我无法填写登录表格
  2. 当我尝试删除无头选项时,我收到此错误
    "message":"Cannot take screenshot with 0 height."
    我猜这是因为内容是由 Javascript 呈现的。请注意,我已经给了它一些时间来渲染
    time.sleep(5)
  3. 当我尝试选择另一个元素时,结果会有所不同。有些给出与上面相同的错误消息,有些给我屏幕截图,但不是整页,只是可见部分(与使用
    browser.save_screenshot()
    的结果相同)。下面是我尝试过的代码。

def S(X): return browser.execute_script(
                'return document.querySelector("#main-layout-content").scroll'+X
)
browser = webdriver.Chrome()
browser.get('some link go here')
browser.set_window_size(S('Width') + 100, S('Height') + 1000)
#The print statement below work
print(S('Height')) 
browser.find_element_by_id('main-layout-content').screenshot('web_screenshot.png')

有什么办法可以实现我所需要的吗?

python selenium web-scraping selenium-chromedriver
1个回答
1
投票

这是我获取网页全尺寸屏幕截图的方法

from selenium import webdriver
browser = webdriver.Chrome()

# We go to the webpage here and wait 2 seconds for fully load
browser.get('https://someURL')
time.sleep(2)

# Where to save the picture
directory = '/home'
# Video title
title = 'Hello world'

try:
        # We try to get the top-level component in which all out page is its children
        # This is different for each website
        elem = browser.find_element_by_id('main-layout-content')
        # Get the height of the element, and adding some height just to be safe
        total_height = elem.size['height'] + 1000
        # Set the window size - what is the size of our screenshot
        # The width is hardcoded because the screensize is fixed for each computer
        browser.set_window_size(1920, total_height)
        # Wait for 2 seconds
        time.sleep(2)
        # Take the screenshot
        browser.find_element_by_id(
            'main-layout-content').screenshot(f'./{directory}/{title}.png')
except SystemError as err:
        print('Take screenshot error at' + title)
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