ASP.NET之MVC 微信公众号授权给第三方平台的技术实现流程一（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);

        }