使用微信助手搭建微信返利机器人流程

[HttpPost]
 public async Task<ActionResult> FanliAsync(string appkey)
 {
  WeixinTBKConfigEntity configEntity = GetConfigEntity(appkey);
  if (configEntity == null)
  {
   LogHelper.WriteLog(typeof(OtherWechatController), "appkey接口验证时，appkey不存在");
   return Content("验证失败。appkey接口验证时，appkey不存在");
  }
  Request.InputStream.Position = 0;
  Stream stream = Request.InputStream;
  string json = string.Empty;
  if (stream.Length != 0)
  {
   StreamReader streamreader = new StreamReader(stream);
   json = streamreader.ReadToEnd();
  }
  WeChatToolMessage responseMsg = new WeChatToolMessage();
  if (string.IsNullOrEmpty(json))
  {
   return Json(responseMsg);
  }
  WeChatToolMessage msg = JsonConvert.DeserializeObject<WeChatToolMessage>(json);
  if (string.IsNullOrEmpty(msg.wxid) || string.IsNullOrEmpty(msg.content))
  {
   return Json(responseMsg);
  }
  string content = msg.content;
  string responseStr = string.Empty;
  if (content.Contains("yangkeduo."))
  {
   //访问拼多多接口
   responseStr = await GetPddCouponAsync(configEntity, msg);
  }
  else if (content.Contains("jd."))
  {
   if (!string.IsNullOrEmpty(configEntity.JdPID))
   {
    //访问京东联盟接口
    responseStr = GetJdCoupon(configEntity, msg);
   }  
  }
  else
  {
   //访问淘宝联盟接口
   responseStr = GetTBKCouponByPassword(configEntity, msg.content);
  }
  responseMsg.wxid = msg.wxid;
  responseMsg.content = responseStr;
  return Json(responseMsg);
 }