微信第三方平台处理授权公众号的网页授权接口
写一OAuthController的MVC控制器，用来接收公众号的网页授权请求
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 + @"configs\WeChat.ThirdpartyPlatform.ComponentVerifyTicket.xml"; 13 using (StreamReader sr = new StreamReader(path, Encoding.UTF8)) 14 { 15 string txt = sr.ReadToEnd(); 16 string[] lines = txt.Split("\r\n".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 else 32 return Redirect(OAuthCallback + clienturl + "?errcode=0&openid=" + openid); 33 }
注意：由第三方平台授权的网页授权，不需要将“公众号设置->功能设置->网页授权域名”特地设置为返回url对应的域名。
