/// <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);
}
///// <summary>
///// 将获取的access_token写入本地文件
///// </summary>
public void UpdateAccessToken(WxResponseResultModel model)
{
model.CreateTime = DateTime.Now;
WeChatAccessTokenDAL dal = new WeChatAccessTokenDAL();
if (model.ErrCode == "45009")
{
throw new Exception("当天接口调用次数达到上限" + model.ErrMsg);
}
dal.UpdateLocalAccessToken(model);
}
