.NET6使用微信小程序授权登录获取手机号

1.在appsettings配置你的小程序配置信息

  //微信小程序信息配置  "WechatConfig": {    "appid": "", //小程序ID    "secret": "" //小程序秘钥  },

2.请求接口时先获取Access_token

        #region 获取小程序的Access_token        public object GetAccess_token(string appid, string secret)        {            string strUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret;            HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(strUrl);            req.Method = "GET";            req.ContentType = "textml;charset=UTF-8";            HttpWebResponse response = (HttpWebResponse)req.GetResponse();            Stream myResponseStream = response.GetResponseStream();            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);            string jsonData = myStreamReader.ReadToEnd();            myStreamReader.Close();            myResponseStream.Close();            string jsonSr = jsonData;            JObject jsons = JObject.Parse(jsonSr);            string accesstoken = jsons["access_token"].ToString();            return accesstoken;        }        #endregion

3.授权时获取手机号

        #region 获取微信绑定手机号        public  object GetPhoneNumber(string code, string appid, string secret)        {            string errCode = "";            try            {                var accesstoken = GetAccess_token(appid, secret);                string serviceAddress = "https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=" + accesstoken;                JObject codes = new JObject();                codes["code"] = code;                string sendData = JsonConvert.SerializeObject(codes);                //换成Post请求方式                string jsonString = UrlPost(sendData, serviceAddress);                dynamic model = JToken.Parse(jsonString) as dynamic;                JObject json = JObject.Parse(jsonString);                errCode = json["errcode"].ToString();                string purePhoneNumber = json["phone_info"]["phoneNumber"].ToString();                //签发token                //string token;                //_authenservice.IsAuthenticated(code, out token);                return new { Code = 200, Msg = "获取成功", Tel = purePhoneNumber, Token = token };            }            catch (Exception e)            {                return new { Code = 0, Msg = "获取失败" + e.Message };            }        }        #endregion

4.微信接口要求必须使用Post请求方法

 #region 提交Post请求        /// 
        /// 提交Post请求        /// 
        /// 参数集合        /// URL        ///         ///         ///         public static string UrlPost(string parameterData, string serviceUrl, string ContentType = "application/json", string Accept = "application/json")        {            //先根据用户请求的uri构造请求地址            //string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);            //创建Web访问对象            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);            //把用户传过来的数据转成“UTF-8”的字节流            byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(parameterData);            myRequest.Method = "POST";            //myRequest.Accept = "application/json";            //myRequest.ContentType = "application/json";  // //Content-Type: application/x-www-form-urlencoded             myRequest.AutomaticDecompression = DecompressionMethods.GZip;            myRequest.Accept = Accept;            //myRequest.ContentType = ContentType;            myRequest.ContentType = "application/json; charset=UTF-8";            myRequest.ContentLength = buf.Length;            myRequest.MaximumAutomaticRedirections = 1;            myRequest.AllowAutoRedirect = true;            //myRequest.Headers.Add("content-type", "application/json");            //myRequest.Headers.Add("accept-encoding", "gzip");            //myRequest.Headers.Add("accept-charset", "utf-8");            //发送请求            Stream stream = myRequest.GetRequestStream();            stream.Write(buf, 0, buf.Length);            stream.Close();            //通过Web访问对象获取响应内容            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();            //通过响应内容流创建StreamReader对象，因为StreamReader更高级更快            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);            //string returnXml = HttpUtility.UrlDecode(reader.ReadToEnd());//如果有编码问题就用这个方法            string returnData = reader.ReadToEnd();//利用StreamReader就可以从响应内容从头读到尾            reader.Close();            myResponse.Close();            return returnData;        }        #endregion

小程序官方文档

https://developers.weixin.qq.com/miniprogram/dev/OpenApiDoc/user-info/phone-number/getPhoneNumber.html

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