配置好webdriver，用的是Chrome的

import cv2

import time

import numpy as np

from selenium import webdriver

from urllib import request

from selenium.webdriver.common.action_chains import ActionChains

brower = webdriver.Chrome()

def loadpage(userid, password):

url = "https://passport.jd.com/new/login.aspx?"

brower.get(url)

time.sleep(3)

s1 = r'//div/div[@class="login-tab login-tab-r"]/a'

userlogin = brower.find_element_by_xpath(s1)

userlogin.click()

# time.sleep(5)

username = brower.find_element_by_id("loginname")

username.send_keys(userid)

userpswd = brower.find_element_by_id("nloginpwd")

userpswd.send_keys(password)

# time.sleep(5)

brower.find_element_by_id("loginsubmit").click()

time.sleep(3)

while True:

try:

getPic()

except:

print("登陆成功----")

break

time.sleep(5)

def getPic():

# 用于找到登录图片的大图

s2 = r'//div/div[@class="JDJRV-bigimg"]/img'

# 用来找到登录图片的小滑块

s3 = r'//div/div[@class="JDJRV-smallimg"]/img'

bigimg = brower.find_element_by_xpath(s2).get_attribute("src")

smallimg = brower.find_element_by_xpath(s3).get_attribute("src")

# print(smallimg + '\n')

# print(bigimg)

# 背景大图命名

backimg = "backimg.png"

# 滑块命名

slideimg = "slideimg.png"

# 下载背景大图保存到本地

request.urlretrieve(bigimg, backimg)

# 下载滑块保存到本地

request.urlretrieve(smallimg, slideimg)

# 获取图片并灰度化

block = cv2.imread(slideimg, 0)

template = cv2.imread(backimg, 0)

# 二值化后的图片名称

blockName = "block.jpg"

templateName = "template.jpg"

# 将二值化后的图片进行保存

cv2.imwrite(blockName, block)

cv2.imwrite(templateName, template)

block = cv2.imread(blockName)

block = cv2.cvtColor(block, cv2.COLOR_RGB2GRAY)

block = abs(255 - block)

cv2.imwrite(blockName, block)

block = cv2.imread(blockName)

template = cv2.imread(templateName)

# 获取偏移量

result = cv2.matchTemplate(block, template, cv2.TM_CCOEFF_NORMED) # 查找block在template中的位置，返回result是一个矩阵，是每个点的匹配结果

x, y = np.unravel_index(result.argmax(), result.shape)

# print("x方向的偏移", int(y * 0.4 + 18), 'x:', x, 'y:', y)

# 获取滑块

element = brower.find_element_by_xpath(s3)

ActionChains(brower).click_and_hold(on_element=element).perform()

ActionChains(brower).move_to_element_with_offset(to_element=element, xoffset=y, yoffset=0).perform()

ActionChains(brower).release(on_element=element).perform()

time.sleep(3)

if __name__ == '__main__':

id = "*********" # 用户账号

passwd = "******" # 用户密码

loadpage(id, passwd)