ASP.NET之MVC 微信公众号授权给第三方平台的技术实现流程（获取第三方平台access_token）

/// <summary>
       /// 一.推送component_verify_ticket
       /// </summary>
       /// <param name="collection"></param>
       /// <returns></returns>
       [HttpPost]
       public ActionResult Index(FormCollection collection)
       {
           //在公众号第三方平台创建审核通过后，微信服务器会向其“授权事件接收URL”每隔10分钟定时推送component_verify_ticket。第三方平台方在收到ticket推送后也需进行解密
           byte[] data = Request.BinaryRead(Request.TotalBytes);
           string postData = Encoding.Default.GetString(data);
           //公众号第三方平台的appid
           string appId = ConfigurationManager.AppSettings["WeixinAppID"];
           //第三方平台申请时填写的接收消息的校验token
           string token = ConfigurationManager.AppSettings["WeixinToken"];
           //第三方平台申请时填写的接收消息的加密symmetric_key
           string encodingAesKey = ConfigurationManager.AppSettings["WeixinEncodingAESKey"];
           string sMsg = "";//解密后的内容
           var msg = new Tencent.WXBizMsgCrypt(token, encodingAesKey, appId);
 
           int ret = msg.DecryptMsg(
               Request.QueryString["msg_signature"],
               Request.QueryString["timestamp"],
               Request.QueryString["nonce"],
               postData,
               ref sMsg);
 
           var xDoc = XDocument.Parse(sMsg);
           var q = (from c in xDoc.Elements() select c).ToList();
           var infoType = q.Elements("InfoType").First().Value;
           switch (infoType)
           {
               case "component_verify_ticket":
                   //q.Elements("ComponentVerifyTicket").First()
                   //这里就是component_verify_ticket的值，保存起来就可以了,处理完成后在页面上输出success,通知微信服务器已经接收到ticket
                   string _AppId = q.Elements("AppId").First().Value;
                   string _CreateTime = q.Elements("CreateTime").First().Value;
                   string _InfoType = q.Elements("InfoType").First().Value;
                   string _ComponentVerifyTicket = q.Elements("ComponentVerifyTicket").First().Value;
                   DateTime dt = DateTime.Now;
 
 
 
                   var datacvt = from t in dbContext.tb_ComponentVerifyTicket
                                 select t;
                   tb_ComponentVerifyTicket tb = new tb_ComponentVerifyTicket();
                   if (datacvt.ToList().Count == 0)//添加
                   {
                       tb.Cvt_AppId = _AppId;
                       tb.Cvt_CreateTime = _CreateTime;
                       tb.Cvt_InfoType = _InfoType;
                       tb.Cvt_ComponentVerifyTicket = _ComponentVerifyTicket;
                       tb.Cvt_DateTime = dt;
                       dbContext.tb_ComponentVerifyTicket.Add(tb);
                       dbContext.SaveChanges();
                   }
                   else//修改
                   {
                       foreach (var item in datacvt)
                       {
                           item.Cvt_Id = item.Cvt_Id;
                           item.Cvt_AppId = _AppId;
                           item.Cvt_CreateTime = _CreateTime;
                           item.Cvt_InfoType = _InfoType;
                           item.Cvt_ComponentVerifyTicket = _ComponentVerifyTicket;
                           item.Cvt_DateTime = dt;
                       }
                       dbContext.SaveChanges();
                   }
                   Response.Write("success");
                   Response.End();
                   break;
               default:
                   break;
           }
           return View();
       }

protected override void OnStart(string[] args)
       {
           string str = "服务开启";
           System.Threading.Timer t = new System.Threading.Timer
            (new System.Threading.TimerCallback(testTheNet), null, 1000 * 60 * 120, 1000 * 60 * 120);
 
           //System.Threading.Timer t = new System.Threading.Timer
           // (new System.Threading.TimerCallback(_testime), null, 1000 * 60, 1000 * 60);
 
       }