selenium登錄豆瓣流程:
1. 進入豆瓣登錄頁面
2. 切換到**子框架**,定位**用戶,密碼**輸入框. 並輸入數據,再**定位登錄**按鍵,點擊登錄.
3. 返回登錄成功後的cookies,
4. 關閉驅動瀏覽器.
遇到的問題:
- 開始定位登錄框總是失敗. 程序報錯
- ==selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {“method”:“id”,“selector”:“username”} ==
- 找不到 定位元素
- 原因:
- 登錄框在 一個iframe中,需要切換到包含登錄塊的frame中
- 解決方法:
from selenium import webdriver
import time
class doubanLogin():
def __init__(self):
self.url = "https://www.douban.com"
self.driver = webdriver.Chrome(r"***")
def login(self):
self.driver.get(self.url)
time.sleep(2)
self.driver.switch_to_frame(self.driver.find_element_by_tag_name('iframe'))
self.driver.find_element_by_xpath("/html/body/div[1]/div[1]/ul[1]/li[2]").click()
username = self.driver.find_element_by_id("username").send_keys("***")
password = self.driver.find_element_by_id("password").send_keys('***')
self.driver.find_element_by_class_name('account-form-field-submit').click()
@property
def get_cookies(self):
cookies = self.driver.get_cookies()
return cookies
def __del__(self):
self.driver.close()
if __name__ == "__main__":
douban = doubanLogin()
douban.login()
print(douban.get_cookies)