在使用selenium去獲取淘寶商品信息時(shí)會(huì)遇到登錄界面

這個(gè)登錄界面處理的難度在于滑動(dòng)驗(yàn)證的實(shí)現(xiàn)，有的人使用微博登錄，避免了滑動(dòng)驗(yàn)證，那可不可以使用密碼登錄呢？答案是可以的

實(shí)現(xiàn)思路

首先導(dǎo)入需要的庫

from selenium import webdriverfrom selenium.webdriver.support.ui import WebDriverWaitfrom selenium.webdriver.common.by import Byfrom selenium.webdriver.support import expected_conditions as ECfrom selenium.webdriver import ActionChainsimport time

1. 定位登錄元素，點(diǎn)擊跳轉(zhuǎn)

代碼如下：

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

這樣就可以從首頁跳轉(zhuǎn)到登錄頁面

2. 獲取用戶和密碼輸入框，并輸入信息

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

3. 獲取滑塊元素

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

4. 滑塊運(yùn)動(dòng)路徑的實(shí)現(xiàn)

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))

這里的260是根據(jù)框的大小計(jì)算出來的

從圖中我們可以看出來，框的大小是300*40，所以滑動(dòng)距離是260

5. 按照運(yùn)動(dòng)路徑拖動(dòng)滑塊

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：獲取登錄按鈕，點(diǎn)擊登錄

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

代碼整理

# encoding:utf-8from selenium import webdriverfrom selenium.webdriver.support.ui import WebDriverWaitfrom selenium.webdriver.common.by import Byfrom selenium.webdriver.support import expected_conditions as ECfrom selenium.webdriver import ActionChainsimport timeclass Taobao_login(object): def __init__(self): self.browser = webdriver.Chrome() self.browser.get(’https://www.taobao.com’) self.wait = WebDriverWait(self.browser,10) #登錄操作 def _put_info(self): #等待密碼登錄選項(xiàng)出現(xiàn)并跳轉(zhuǎn)登錄頁面 password_login = self.wait.until( EC.presence_of_element_located((By.XPATH,'//div[@class=’site-nav-sign’]//a[@class=’h’]'))) password_login.click() #登錄 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(’用戶’) input_password = self.browser.find_element_by_xpath('//div[@class=’input-plain-wrap input-wrap-password’]//input[@class=’fm-text’]') input_password.send_keys(’密碼’) def _get_track(self): ’’’ 獲取運(yùn)動(dòng)軌跡 :return: 運(yùn)動(dòng)軌跡 ’’’ #滑動(dòng)驗(yàn)證 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): ’’’ 獲取滑塊 :return: 滑塊對象 ’’’ 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拖動(dòng)滑塊 :param spider: 滑塊 :param tracks: 軌跡 :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): #點(diǎn)擊登錄 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()

總結(jié)

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