如何用微信登陆手机网站
比如饿了么 用户在微信群点那个链接就可以 通过微信直接登陆到 饿了么的手机网页 这是怎么实现的？
我用了 腾讯的开发者平台了 也申请了开发者 和 网站应用 但是接入接口后 手机网页 显示扫二维码这个蛋疼的登陆方法- -
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比如饿了么 用户在微信群点那个链接就可以 通过微信直接登陆到 饿了么的手机网页 这是怎么实现的？
我用了 腾讯的开发者平台了 也申请了开发者 和 网站应用 但是接入接口后 手机网页 显示扫二维码这个蛋疼的登陆方法- -
文档：http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html
当用户通过微信中的浏览器打开网页，后台可以获取到一个openID，openID是一个用户的唯一标识，也就知道这个用户是谁，当然就可以实现自动登录。不过仅限于微信内嵌的浏览器打开网页，其他方式打开肯定不行。
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