1 public async Task<ActionResult> RedirectCallback(string state, string code = "", string appid = "", string clienturl = "") 2  { 3 if (code.Length == 0) 4  { 5 if (clienturl.IndexOf("?") != -1) 6 return Redirect(OAuthCallback + clienturl + "&errcode=-1&errmsg=" + HttpUtility.UrlEncode("用户禁止授权")); 7 else 8 return Redirect(OAuthCallback + clienturl + "?errcode=-1&errmsg=" + HttpUtility.UrlEncode("用户禁止授权")); 9  }10 11 var ticketValue = "";12 string path = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + @"configsWeChat.ThirdpartyPlatform.ComponentVerifyTicket.xml";13 using (StreamReader sr = new StreamReader(path, Encoding.UTF8))14  {15 string txt = sr.ReadToEnd();16 string[] lines = txt.Split("rn".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);17 if (lines.Length == 4)18 ticketValue = lines[3];19  }20 var accessTokenValue = await Authentication.GetComponentAccessToken(AppId, AppSecret, ticketValue);21 var jsonStr = await Util.HttpGetAsync("https://api.weixin.qq.com/sns/oauth2/component/access_token?appid=" + appid + "&code=" + code + "&grant_type=authorization_code&component_appid=" + AppId + "&component_access_token=" + accessTokenValue);22 //if (jsonStr.Contains("errcode"))23 //{24 // response.Content = new StringContent(jsonStr, Encoding.UTF8, "text/html");25 // return response;26 //}27 JObject result = Newtonsoft.Json.JsonConvert.DeserializeObject<JObject>(jsonStr);28 string openid = result["openid"].Value<string>();29 if (clienturl.IndexOf("?") != -1)30 return Redirect(OAuthCallback + clienturl + "&errcode=0&openid=" + openid);31 else32 return Redirect(OAuthCallback + clienturl + "?errcode=0&openid=" + openid);33 }