/// <summary> /// 获取access_token /// </summary> public string GetAccessToken() { string access_token = string.Empty; string resString; WeChatAccessTokenDAL dal = new WeChatAccessTokenDAL(); WxResponseResultModel model = dal.GetLocalAccessToken(); if (string.IsNullOrWhiteSpace(model.Access_Token)) //尚未保存过access_token { resString = Untils.GetToken(AppConsts.WxOpenAppId, AppConsts.WxOpenAppSecret); WxResponseResultModel newModel = JsonConvert.DeserializeObject <WxResponseResultModel>(resString); UpdateAccessToken(newModel); access_token = newModel.Access_Token; } else { if (Untils.TokenExpired(model)) //access_token过期 { resString = Untils.GetToken(AppConsts.WxOpenAppId, AppConsts.WxOpenAppSecret); WxResponseResultModel newModel = JsonConvert.DeserializeObject <WxResponseResultModel>(resString); UpdateAccessToken(newModel); access_token = newModel.Access_Token; } else { return(model.Access_Token); } } return(access_token); }