Selenium: Trying to log in with cookies and get the errorMessage - “Can only set cookies for current domain” or "Unable to set Cookie"

时间：2021-04-13 03:13:14
 from selenium import webdriver

 driver = webdriver.PhantomJS(executable_path='G:/OpenSources/phantomjs-2.1.1-windows/bin/phantomjs')

 driver.get("http://pythonscraping.com")

 driver.implicitly_wait(1)

 print(driver.get_cookies())

 savedCookies = driver.get_cookies()

 driver2 = webdriver.PhantomJS(executable_path='G:/OpenSources/phantomjs-2.1.1-windows/bin/phantomjs')

 driver2.get("http://pythonscraping.com")

 driver2.delete_all_cookies()

 for cookie in savedCookies:

     driver2.add_cookie(cookie)

 driver2.get("http://pythonscraping.com")

 driver2.implicitly_wait(1)

 print(driver2.get_cookies())

以上代码15行报错: "errorMessage":"Can only set Cookies for the current domain"

将15行代码改为:

 driver2.add_cookie({k: cookie[k] for k in ('name', 'value', 'domain', 'path', 'expiry') if k in cookie})

修改后报错: "errorMessage":"Unable to set Cookie"

最终修改:

 from selenium import webdriver

 import time

 driver = webdriver.PhantomJS(executable_path='G:/OpenSources/phantomjs-2.1.1-windows/bin/phantomjs')

 driver.get("http://pythonscraping.com")

 driver.implicitly_wait(1)

 print(driver.get_cookies())

 savedCookies = driver.get_cookies()

 driver2 = webdriver.PhantomJS(executable_path='G:/OpenSources/phantomjs-2.1.1-windows/bin/phantomjs')

 driver2.get("http://pythonscraping.com")

 driver2.delete_all_cookies()

 for cookie in savedCookies:

     # fix the problem-> "errorMessage":"Unable to set Cookie"

     for k in ('name', 'value', 'domain', 'path', 'expiry'):

         if k not in list(cookie.keys()):

             if k == 'expiry':

                 t = time.time()

                 cookie[k] = int(t) # 时间戳 秒

     # fix the problem-> "errorMessage":"Can only set Cookies for the current domain"

     driver2.add_cookie({k: cookie[k] for k in ('name', 'value', 'domain', 'path', 'expiry') if k in cookie})

 driver2.get("http://pythonscraping.com")

 driver2.implicitly_wait(1)

 print(driver2.get_cookies())

在这个例子中，第一个 webdriver获得了一个网站，打印 cookie 并把它们保存到变量savedCookies里。第二个webdriver加载同一个网站（技术提示：必须首先加载网站，这样Selenium 才能知道cookie 属于哪个网站，即使加载网站的行为对我们没任何用处），删除所有的cookie ，然后替换成第一个webdriver得到的cookie 。当再次加载这个页面时，两组cookie 的时间戳、源代码和其他信息应该完全一致。

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