您可以使用JavaScript来检查的cookie全成登录后，你会放弃。该JS将检查页当前负载和重定向非登录页面如果cookie存在。也有其他方法来做到这一点作为desctibed：
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You can use javascript that checks for cookie you'll give after successfull login. the js will check it onpage load and redirect to non-login page if the cookie exists. there are also other methods to do that as desctibed in: here