微信授权网页信息的NodeJS服务器实现

目录

1.在微信后台添加回调域名
_. 获取授权
_. 微信后台填写域名回调

2. API 1: 设置分享最终连接
3. API 2: 分享连接兼容回调
4. API 3: 获取 access_token
5. API 4: 刷新 access_token
6. API 5: 拉取用户信息

授权信息

1. 获取授权

   var appid = “”;
   var secret = “”;

2. 在微信后台添加回调域名

   比如我们填写 game.baidu.com (当然, 你需要自己的域名)

API 1: 此链接作为最终分享用连接, state 参数为”msgid,userid”格式数据

var redirect_uri = "http://game.baidu.com/uri";
var scope = "snsapi_userinfo"; // snsapi_base 获取openid, snsapi_userinfo 详细用户信息
var state = "";    // 重定向会需要该参数

var authorizeURL = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=%s&redirect_uri=%s&response_type=code&scope=%s&state=%s#wechat_redirect"
var url = util.format(authorizeURL, appid, redirect_uri, scope, state);

API 2: 此链接为 API1 中的回调连接, 判断授权是否成功 redirect_uri/?code=CODE&state=STATE OR redirect_uri?state=STATE

var code = "";    // 此code要依据 req.query.code 获取

API 3: 如果成功, 调用获取 access_token 的方法, 由于 secret 问题必须从服务器发起, 也就是说 API2 必须是服务器地址

var accessTokenURL = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=%s&secret=%s&code=%s&grant_type=authorization_code"
var url = util.format(accessTokenURL, appid, secret, code);

var ret = {
   "access_token":"ACCESS_TOKEN",
   "expires_in":7200,
   "refresh_token":"REFRESH_TOKEN",
   "openid":"OPENID",
   "scope":"SCOPE",
   "unionid": "o6_bmasdasdsad6_2sgVt7hMZOPfL"
};

OR

var ret = {"errcode":40029,"errmsg":"invalid code"};

API 4: 刷新 access_token

var refreshTokenURL = "https://api.weixin.qq.com/sns/oauth2/refresh_token?appid=%s&grant_type=refresh_token&refresh_token=%s"
var url = util.format(refreshTokenURL, appid, refreshToken);

var ret = {
   "access_token":"ACCESS_TOKEN",
   "expires_in":7200,
   "refresh_token":"REFRESH_TOKEN",
   "openid":"OPENID",
   "scope":"SCOPE"
};

OR

var ret = {"errcode":40029,"errmsg":"invalid code"};

API 5: 拉取用户信息

var loadUserInfoURL = "https://api.weixin.qq.com/sns/userinfo?access_token=%s&openid=%s&lang=zh_CN";
var url = util.format(loadUserInfoURL, accessToken, openid);

var ret = {
   "openid":" OPENID",
   " nickname": NICKNAME,
   "sex":"1",
   "province":"PROVINCE"
   "city":"CITY",
   "country":"COUNTRY",
    "headimgurl":    "http://wx.qlogo.cn/mmopen/g3MonUZtNHkdmzicIlibx6iaFqAc56vxLSUfpb6n5WKSYVY0ChQKkiaJSgQ1dZuTOgvLLrhJbERQQ4eMsv84eavHiaiceqxibJxCfHe/46",
    "privilege":[
    "PRIVILEGE1"
    "PRIVILEGE2"
    ],
    "unionid": "o6_bmasdasdsad6_2sgVt7hMZOPfL"
};

OR

var ret = {"errcode":40003,"errmsg":" invalid openid "};