1. 用户关注以及回复消息的时候，均可以获得用户的OpenID
word/media/image1.gif
<xml>
<ToUserName>gh_b629c48b653e]]>ToUserName>
<FromUserName>FromUserName>
<CreateTime>1372307736CreateTime>
<MsgType>event]]>MsgType>
<Event>subscribe]]>Event>
<EventKey>EventKey>
xml>
word/media/image1.gif
其中的FromUserName就是OpenID
2. 然后使用access_token接口，请求获得全局Access Token
https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET
返回结果：
{
"access_token": "NU7Kr6v9L9TQaqm5NE3OTPctTZx797Wxw4Snd2WL2HHBqLCiXlDVOw2l-Se0I-WmOLLniAYLAwzhbYhXNjbLc_KAA092cxkmpj5FpuqNO0IL7bB0Exz5s5qC9Umypy-rz2y441W9qgfnmNtIZWSjSQ",
"expires_in": 7200
}
3. 再使用全局ACCESS_TOKEN获取OpenID的详细信息
https://api.weixin.qq.com/cgi-bin/user/info?access_token=ACCESS_TOKEN&openid=OPENID
返回如下：
word/media/image1.gif
{
"subscribe": 1,
"openid": "oLVPpjqs2BhvzwPj5A-vTYAX4GLc",
"nickname": "刺猬宝宝",
"sex": 1,
"language": "zh_CN",
"city": "深圳",
"province": "广东",
"country": "中国",
"headimgurl": "http://wx.qlogo.cn/mmopen/JcDicrZBlREhnNXZRudod9PmibRkIs5K2f1tUQ7lFjC63pYHaXGxNDgMzjGDEuvzYZbFOqtUXaxSdoZG6iane5ko9H30krIbzGv/0",
"subscribe_time": 1386160805
}
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