微信UnionID的做用

一、經過接口獲得用戶信息 java https://api.weixin.qq.com/cgi-bin/user/info?access_token=ACCESS_TOKEN&openid=OPENID&lang=zh_CNapi  二、拿到JSon返回值安全 { "subscribe": 1, "openid": "o6_bmjrPTlm6_2sgVt7hMZOPfL2M", "nic

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