https://open.weixin.qq.com/connect/oauth2/authorize?response_type=code&scope=snsapi_base&state=123&appid=wx2e9a7ab248ae20c8&redirect_uri=http%3A%2F%2Fft.sifuku.cn%2Fgroup.html%3Fid%3D229986#wechat_redirect 补上地址