添加 Azure Active Directory 服务，调用方法

 引入dll ：Microsoft.IdentityModel.JsonWebTokens
 
 1                     string url = string.Format("{0}token", ConfigurationManager.AppSettings["AAdLoginUrl"]);
                    HttpClient client = new HttpClient();
                    var dic_Form = new Dictionary<string, string>();
                    dic_Form.Add("client_id", ConfigurationManager.AppSettings["Client_Id"]);
                    dic_Form.Add("scope", "openid");
                    dic_Form.Add("code", codestr);
                    dic_Form.Add("redirect_uri", ConfigurationManager.AppSettings["Redirect_Uri"]);
                    dic_Form.Add("grant_type", "authorization_code");
                    dic_Form.Add("client_secret", ConfigurationManager.AppSettings["Client_Secret"]);
                    var content = new FormUrlEncodedContent(dic_Form);
                    var response = client.PostAsync(url, content).Result;
                    resultStr = response.Content.ReadAsStringAsync().Result;
                    if (!string.IsNullOrEmpty(resultStr))
                    {
                        //ADDResultModel根据文档创建的返回信息实体类，需要自己根据需求创建
                        var result = JsonConvert.DeserializeObject<ADDResultModel>(resultStr);
                        if (!string.IsNullOrEmpty(result.error_description))
                        {
                            context.Response.Write(result.error_description);
                        }
                        if (!string.IsNullOrEmpty(result.access_token))
                        {
                            JsonWebTokenHandler handler = new JsonWebTokenHandler();
                            if (handler.CanReadToken(result.access_token))
                            {
                                JsonWebToken jwt = handler.ReadJsonWebToken(result.access_token);
                                var claims = jwt.Claims;
                                Claim claim1 = claims.Where(i => i.Type == "oid").FirstOrDefault();
                                Claim claim2 = claims.Where(i => i.Type == "unique_name").FirstOrDefault();
                                Console.WriteLine(claim1.Value);
                                Console.WriteLine(claim2.Value);
                            }
                        }
                    }