파이썬에서 셀레늄 웹 드라이버를 사용하여 웹 페이지를 어떻게 스크롤 할 수 있습니까?

파이썬에서 셀레늄 웹 드라이버를 사용하여 웹 페이지를 어떻게 스크롤 할 수 있습니까?

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나는 현재 셀레늄 웹 드라이버를 사용하여 페이스 북 사용자 친구 페이지를 구문 분석하고 AJAX 스크립트에서 모든 ID를 추출합니다. 하지만 모든 친구를 얻으려면 아래로 스크롤해야합니다. Selenium에서 어떻게 아래로 스크롤 할 수 있습니까? 파이썬을 사용하고 있습니다.

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당신이 사용할 수있는

driver.execute_script("window.scrollTo(0, Y)") 

여기서 Y는 높이입니다 (풀 HD 모니터에서는 1080입니다). (@lukeis에게 감사드립니다)

당신은 또한 사용할 수 있습니다

driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

페이지 하단 으로 스크롤합니다 .

당신이 원하는 경우 무한 로딩 페이지에 스크롤 소셜 네트워크 것과 같은, 페이스 북 등 (@Cuong 트란 덕분에)

SCROLL_PAUSE_TIME = 0.5

# Get scroll height
last_height = driver.execute_script("return document.body.scrollHeight")

while True:
    # Scroll down to bottom
    driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

    # Wait to load page
    time.sleep(SCROLL_PAUSE_TIME)

    # Calculate new scroll height and compare with last scroll height
    new_height = driver.execute_script("return document.body.scrollHeight")
    if new_height == last_height:
        break
    last_height = new_height

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무한 페이지 (예 : linkedin.com )의 맨 아래 로 스크롤 하려면 다음 코드를 사용할 수 있습니다.

SCROLL_PAUSE_TIME = 0.5

# Get scroll height
last_height = driver.execute_script("return document.body.scrollHeight")

while True:
    # Scroll down to bottom
    driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

    # Wait to load page
    time.sleep(SCROLL_PAUSE_TIME)

    # Calculate new scroll height and compare with last scroll height
    new_height = driver.execute_script("return document.body.scrollHeight")
    if new_height == last_height:
        break
    last_height = new_height

참조 : https://stackoverflow.com/a/28928684/1316860

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same method as shown here:

in python you can just use

driver.execute_script("window.scrollTo(0, Y)")

(Y is the vertical position you want to scroll to)

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from selenium.webdriver.common.keys import Keys
html = browser.find_element_by_tag_name('html')
html.send_keys(Keys.END)

tested, it works

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element=find_element_by_xpath("xpath of the li you are trying to access")

element.location_once_scrolled_into_view

this helped when I was trying to access a 'li' that was not visible.

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For my purpose, I wanted to scroll down more, keeping the windows position in mind. My solution was similar and used window.scrollY

driver.execute_script("window.scrollTo(0, window.scrollY + 200)")

which will go to the current y scroll position + 200

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This is how you scroll down the webpage:

driver.execute_script("window.scrollTo(0, 1000);")

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None of these answers worked for me, at least not for scrolling down a facebook search result page, but I found after a lot of testing this solution:

while driver.find_element_by_tag_name('div'):
    driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
    Divs=driver.find_element_by_tag_name('div').text
    if 'End of Results' in Divs:
        print 'end'
        break
    else:
        continue

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The easiest way i found to solve that problem was to select a label and then send:

label.sendKeys(Keys.PAGE_DOWN);

Hope it works!

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When working with youtube the floating elements give the value "0" as the scroll height so rather than using "return document.body.scrollHeight" try using this one "return document.documentElement.scrollHeight" adjust the scroll pause time as per your internet speed else it will run for only one time and then breaks after that.

SCROLL_PAUSE_TIME = 1

# Get scroll height
"""last_height = driver.execute_script("return document.body.scrollHeight")

this dowsnt work due to floating web elements on youtube
"""

last_height = driver.execute_script("return document.documentElement.scrollHeight")
while True:
    # Scroll down to bottom
    driver.execute_script("window.scrollTo(0,document.documentElement.scrollHeight);")

    # Wait to load page
    time.sleep(SCROLL_PAUSE_TIME)

    # Calculate new scroll height and compare with last scroll height
    new_height = driver.execute_script("return document.documentElement.scrollHeight")
    if new_height == last_height:
       print("break")
       break
    last_height = new_height

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I was looking for a way of scrolling through a dynamic webpage, and automatically stopping once the end of the page is reached, and found this thread.

The post by @Cuong Tran, with one main modification, was the answer that I was looking for. I thought that others might find the modification helpful (it has a pronounced effect on how the code works), hence this post.

The modification is to move the statement that captures the last page height inside the loop (so that each check is comparing to the previous page height).

So, the code below:

Continuously scrolls down a dynamic webpage (.scrollTo()), only stopping when, for one iteration, the page height stays the same.

(There is another modification, where the break statement is inside another condition (in case the page 'sticks') which can be removed).

    SCROLL_PAUSE_TIME = 0.5


    while True:

        # Get scroll height
        ### This is the difference. Moving this *inside* the loop
        ### means that it checks if scrollTo is still scrolling 
        last_height = driver.execute_script("return document.body.scrollHeight")

        # Scroll down to bottom
        driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

        # Wait to load page
        time.sleep(SCROLL_PAUSE_TIME)

        # Calculate new scroll height and compare with last scroll height
        new_height = driver.execute_script("return document.body.scrollHeight")
        if new_height == last_height:

            # try again (can be removed)
            driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

            # Wait to load page
            time.sleep(SCROLL_PAUSE_TIME)

            # Calculate new scroll height and compare with last scroll height
            new_height = driver.execute_script("return document.body.scrollHeight")

            # check if the page height has remained the same
            if new_height == last_height:
                # if so, you are done
                break
            # if not, move on to the next loop
            else:
                last_height = new_height
                continue

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scroll loading pages. Example: medium, quora,etc

last_height = driver.execute_script("return document.body.scrollHeight")
    while True:
        driver.execute_script("window.scrollTo(0, document.body.scrollHeight-1000);")
        # Wait to load the page.
        driver.implicitly_wait(30) # seconds
        new_height = driver.execute_script("return document.body.scrollHeight")

        if new_height == last_height:
            break
        last_height = new_height
        # sleep for 30s
        driver.implicitly_wait(30) # seconds
        driver.quit()

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This code scrolls to the bottom but doesn't require that you wait each time. It'll continually scroll, and then stop at the bottom (or timeout)

from selenium import webdriver
import time

driver = webdriver.Chrome(executable_path='chromedriver.exe')
driver.get('https://example.com')

pre_scroll_height = driver.execute_script('return document.body.scrollHeight;')
run_time, max_run_time = 0, 1
while True:
    iteration_start = time.time()
    # Scroll webpage, the 100 allows for a more 'aggressive' scroll
    driver.execute_script('window.scrollTo(0, 100*document.body.scrollHeight);')

    post_scroll_height = driver.execute_script('return document.body.scrollHeight;')

    scrolled = post_scroll_height != pre_scroll_height
    timed_out = run_time >= max_run_time

    if scrolled:
        run_time = 0
        pre_scroll_height = post_scroll_height
    elif not scrolled and not timed_out:
        run_time += time.time() - iteration_start
    elif not scrolled and timed_out:
        break

# closing the driver is optional 
driver.close()

This is much faster than waiting 0.5-3 seconds each time for a response, when that response could take 0.1 seconds

참고URL : https://stackoverflow.com/questions/20986631/how-can-i-scroll-a-web-page-using-selenium-webdriver-in-python