selenium截取具體元素圖片(python版)

原理：

1.截圖(整個窗口)

2.獲取此元素坐標

element = driver.find_element_by_id("xx")

element.location)

3.獲取此元素大小

element = driver.find_element_by_id("xx")

element.size

4.根據元素坐標和元素大小確定此元素四個角坐標

5.依賴pillow，根據四角坐標提取圖片並保存

案例源碼：

首先pip安裝pillow

pip install pillow

截圖：

# coding:utf-8
from selenium import webdriver
from PIL import Image
driver = webdriver.Firefox()
driver.get('http://www.baidu.com/')

driver.save_screenshot('bdbutton.png')
element = driver.find_element_by_id("su")
print(element.location)                # 打印元素坐標
print(element.size)                    # 打印元素大小

left = element.location['x']
top = element.location['y']
right = element.location['x'] + element.size['width']
bottom = element.location['y'] + element.size['height']

im = Image.open('bdbutton.png')
im = im.crop((left, top, right, bottom))
im.save('bdbutton.png')