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import selenium.webdriver.chrome.webdriver
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import time, os
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from PIL import Image
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def chrome_take_full_page_screenshot(browser, file):
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    browser.maximize_window()
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    time.sleep(0.2)
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    total_width = browser.execute_script("return document.body.offsetWidth")
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    total_height = browser.execute_script("return document.body.parentNode.scrollHeight")
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    viewport_width = browser.execute_script("return document.body.clientWidth")
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    viewport_height = browser.execute_script("return window.innerHeight")
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    rectangles = []
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    i = 0
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    while i < total_height:
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        ii = 0
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        top_height = i + viewport_height
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        if top_height > total_height:
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            top_height = total_height
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        while ii < total_width:
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            top_width = ii + viewport_width
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            if top_width > total_width:
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                top_width = total_width
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            rectangles.append((ii,i,top_width,top_height))
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            ii = ii + viewport_width
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        i = i + viewport_height
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    stitched_image = Image.new('RGB', (total_width, total_height))
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    previous = None
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    part = 0
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    cache_id = 1
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    for rectangle in rectangles:
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        if not previous is None:
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            browser.execute_script("window.scrollTo({0}, {1})".format(rectangle[0], rectangle[1]))
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            time.sleep(0.2)
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        file_name = "scroll_{0}_part_{1}.png".format(cache_id, part)
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        browser.get_screenshot_as_file(file_name)
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        screenshot = Image.open(file_name)
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        if rectangle[1] + viewport_height > total_height:
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            offset = (rectangle[0], total_height - viewport_height)
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        else:
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            offset = (rectangle[0], rectangle[1])
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        stitched_image.paste(screenshot, offset)
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        del screenshot
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        os.remove(file_name)
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        part = part + 1
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        previous = rectangle
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    stitched_image.save(file)
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chrome_driver = 'C:/anaconda/chromedriver.exe' #驅動路徑
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browser = selenium.webdriver.chrome.webdriver.WebDriver(chrome_driver)
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browser.get("https://law.moj.gov.tw/LawClass/LawAll.aspx?pcode=A0000001") #擷取網址
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chrome_take_full_page_screenshot(browser, 'img.png') #圖片儲存路徑

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from selenium import webdriver
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from time import sleep
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from selenium.webdriver.common.by import By
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from selenium.webdriver.common.action_chains import ActionChains
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from PIL import Image
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import PIL
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PIL.Image.MAX_IMAGE_PIXELS = 933120000 #如果圖片pixels很大 設定高一點
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url="https://law.moj.gov.tw/LawClass/LawAll.aspx?pcode=A0000001"
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driver=webdriver.Chrome("C:/anaconda/chromedriver.exe") #驅動 路徑請設定自己的檔案路徑
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driver.get(url)
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driver.maximize_window()
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sleep(0.3)
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content = driver.find_element(By.XPATH, '//*[@id="pnLawFla"]/div/div[165]') #元素位置 #例如：憲法第146條
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driver.execute_script("arguments[0].scrollIntoView();", content) #滾動到元素
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sleep(0.3)
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#取得元素尺寸大小
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left=content.location['x']
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top=content.location['y']
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right=content.location['x'] + content.size['width']
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bottom=content.location['y'] + content.size['height']
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img=Image.open("img.png") #開啟整頁圖片
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img2=img.crop((left,top,right,bottom)) #切圖
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img2.save('crop.png') #切圖儲存
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# print(left)
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# print(top)
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# print(right)
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# print(bottom)
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driver.close()