回答

我们以b站登录为例

#!/usr/local/python3/bin/python3
# -*- coding: utf-8 -*
# -*- coding:utf-8 -*-
from PIL import Image
from time import sleep
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver import ActionChains
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36"
}
chrome_options = webdriver.ChromeOptions()
chrome_options.add_experimental_option('w3c', False)
caps = DesiredCapabilities.CHROME
caps['loggingPrefs'] = {'performance': 'ALL'}
class SliderVerificationCode(object):
    def __init__(self):  # 初始化一些信息
        self.left = 60  # 定义一个左边的起点 缺口一般离图片左侧有一定的距离 有一个滑块
        self.url = 'https://passport.bilibili.com/login'
        self.driver = webdriver.Chrome(desired_capabilities=caps,options=chrome_options)
        self.wait = WebDriverWait(self.driver, 20)  # 设置等待时间20秒
        self.phone = "18888888888"
        self.passwd = "12334545"
 
    def input_name_password(self):  # 输入账号密码
        self.driver.get(self.url)
        self.driver.maximize_window()
        input_name = self.driver.find_element_by_xpath("//input[@id='login-username']")
        input_pwd = self.driver.find_element_by_xpath("//input[@id='login-passwd']")
        input_name.send_keys("username")
        input_pwd.send_keys("passport")
        sleep(3)
    def click_login_button(self):  # 点击登录按钮,出现验证码图片
        login_btn = self.driver.find_element_by_class_name("btn-login")
        login_btn.click()
        sleep(3)
    def get_geetest_image(self):  # 获取验证码图片
        gapimg = self.wait.until(EC.presence_of_element_located((By.CLASS_NAME, 'geetest_canvas_bg')))
        sleep(2)
        gapimg.screenshot(r'./captcha1.png')
        # 通过js代码修改标签样式 显示图片2
        js = 'var change = document.getElementsByClassName("geetest_canvas_fullbg");change[0].style = "display:block;"'
        self.driver.execute_script(js)
        sleep(2)
        fullimg = self.wait.until(
            EC.presence_of_element_located((By.CLASS_NAME, 'geetest_canvas_slice')))
        fullimg.screenshot(r'./captcha2.png')
    def is_similar(self, image1, image2, x, y):
        '''判断两张图片 各个位置的像素是否相同
        #image1:带缺口的图片
        :param image2: 不带缺口的图片
        :param x: 位置x
        :param y: 位置y
        :return: (x,y)位置的像素是否相同
        '''
        # 获取两张图片指定位置的像素点
        pixel1 = image1.load()[x, y]
        pixel2 = image2.load()[x, y]
        # 设置一个阈值 允许有误差
        threshold = 60
        # 彩色图 每个位置的像素点有三个通道
        if abs(pixel1[0] - pixel2[0]) < threshold and abs(pixel1[1] - pixel2[1]) < threshold and abs(
                pixel1[2] - pixel2[2]) < threshold:
            return True
        else:
            return False
    def get_diff_location(self):  # 获取缺口图起点
        captcha1 = Image.open('captcha1.png')
        captcha2 = Image.open('captcha2.png')
        for x in range(self.left, captcha1.size[0]):  # 从左到右 x方向
            for y in range(captcha1.size[1]):  # 从上到下 y方向
                if not self.is_similar(captcha1, captcha2, x, y):
                    return x  # 找到缺口的左侧边界 在x方向上的位置
 
    def get_move_track(self, gap):
        track = []  # 移动轨迹
        current = 0  # 当前位移
        # 减速阈值
        mid = gap * 4 / 5  # 前4/5段加速 后1/5段减速
        t = 0.2  # 计算间隔
        v = 0  # 初速度
        while current < gap:
            if current < mid:
                a = 5  # 加速度为+5
            else:
                a = -5  # 加速度为-5
            v0 = v  # 初速度v0
            v = v0 + a * t  # 当前速度
            move = v0 * t + 1 / 2 * a * t * t  # 移动距离
            current += move  # 当前位移
            track.append(round(move))  # 加入轨迹
        return track
    def move_slider(self, track):
        slider = self.wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '.geetest_slider_button')))
        ActionChains(self.driver).click_and_hold(slider).perform()
        for x in track:  # 只有水平方向有运动 按轨迹移动
            ActionChains(self.driver).move_by_offset(xoffset=x, yoffset=0).perform()
            sleep(0.2)
        sleep(1)
        ActionChains(self.driver).release().perform()  # 松开鼠标
 
    def main(self):
        self.input_name_password()
        self.click_login_button()
        self.get_geetest_image()
        gap = self.get_diff_location()  # 缺口左起点位置
        gap = gap - 6  # 减去滑块左侧距离图片左侧在x方向上的距离 即为滑块实际要移动的距离
        track = self.get_move_track(gap)
        self.move_slider(track)
if __name__ == "__main__":
    springAutumn = SliderVerificationCode()
    springAutumn.main()