python3.7+selenium使用密码登录淘宝

在使用selenium去获取淘宝商品信息时会遇到登录界面

这个登录界面处理的难度在于滑动验证的实现，有的人使用微博登录，避免了滑动验证，那可不可以使用密码登录呢？答案是可以的

实现思路

首先导入需要的库

from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver import ActionChains
import time

1. 定位登录元素，点击跳转

代码如下：

password_login = self.wait.until(
            EC.presence_of_element_located((By.XPATH,"//div[@class='site-nav-sign']//a[@class='h']")))
        password_login.click()

这样就可以从首页跳转到登录页面

2. 获取用户和密码输入框，并输入信息

input_user = self.wait.until(
            EC.presence_of_element_located((By.XPATH,"//div[@class='input-plain-wrap input-wrap-loginid ']//input[@class='fm-text']")))
        input_user.send_keys('用户')

        input_password = self.browser.find_element_by_xpath("//div[@class='input-plain-wrap input-wrap-password']//input[@class='fm-text']")
        input_password.send_keys('密码')

3. 获取滑块元素

slider = self.wait.until(
            EC.element_to_be_clickable(
                (By.XPATH, '//div[@class="scale_text slidetounlock"]//span[@class="nc-lang-cnt"]')))

4. 滑块运动路径的实现

distance = 260
        track = []
        current = 0
        # mid = distance*3/13
        t = 1
        v= 260
        if current < distance:
            x = v*t
            current = current+x
            track.append(round(x))

这里的260是根据框的大小计算出来的

从图中我们可以看出来，框的大小是300*40，所以滑动距离是260

5. 按照运动路径拖动滑块

ActionChains(self.browser).click_and_hold(slider).perform()
        for i in tracks:
            ActionChains(self.browser).move_by_offset(xoffset=i,yoffset=0).perform()
        time.sleep(1)
        ActionChains(self.browser).release().perform()

6. 最后一步：获取登录按钮，点击登录

button = self.wait.until(
            EC.element_to_be_clickable((By.XPATH,"//div[@class='fm-btn']//button[@type='submit']")))
        button.click()

代码整理

# encoding:utf-8

from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver import ActionChains
import time

class Taobao_login(object):
    def __init__(self):
        self.browser = webdriver.Chrome()
        self.browser.get('https://www.taobao.com')
        self.wait = WebDriverWait(self.browser,10)

    #登录操作
    def _put_info(self):
        #等待密码登录选项出现并跳转登录页面
        password_login = self.wait.until(
            EC.presence_of_element_located((By.XPATH,"//div[@class='site-nav-sign']//a[@class='h']")))
        password_login.click()

        #登录
        input_user = self.wait.until(
            EC.presence_of_element_located((By.XPATH,"//div[@class='input-plain-wrap input-wrap-loginid ']//input[@class='fm-text']")))
        input_user.send_keys('用户')

        input_password = self.browser.find_element_by_xpath("//div[@class='input-plain-wrap input-wrap-password']//input[@class='fm-text']")
        input_password.send_keys('密码')

    def _get_track(self):
        '''
        获取运动轨迹
        :return: 运动轨迹
        '''
        #滑动验证
        distance = 260
        track = []
        current = 0
        # mid = distance*3/13
        t = 1
        v= 260
        if current < distance:
            x = v*t
            current = current+x
            track.append(round(x))
        return track

    def _get_slider(self):
        '''
        获取滑块
        :return: 滑块对象
        '''
        slider = self.wait.until(
            EC.element_to_be_clickable(
                (By.XPATH, '//div[@class="scale_text slidetounlock"]//span[@class="nc-lang-cnt"]')))
        return slider


    def _move_to_gap(self,slider,tracks):
        '''
        按照tracks拖动滑块
        :param spider: 滑块
        :param tracks: 轨迹
        :return:
        '''
        ActionChains(self.browser).click_and_hold(slider).perform()
        for i in tracks:
            ActionChains(self.browser).move_by_offset(xoffset=i,yoffset=0).perform()
        time.sleep(1)
        ActionChains(self.browser).release().perform()

    def _login(self):
        #点击登录
        button = self.wait.until(
            EC.element_to_be_clickable((By.XPATH,"//div[@class='fm-btn']//button[@type='submit']")))
        button.click()
        time.sleep(1)

    def run(self):
        self._put_info()
        time.sleep(1)
        # tracks = self._get_track()
        # slider = self._get_slider()
        # self._move_to_gap(slider,tracks)
        # time.sleep(1)
        # self._login()
    
if __name__ == '__main__':
    login = Taobao_login()
    login.run()

如果有更好的方法，欢迎通过评论互相学习。