public string AddItemToList(int itemId)
{
Response response = new Response();
response.status = false;
int nowUserId = Convert.ToInt32(HttpContext.Session.GetInt32("id"));
if (nowUserId != 0)
{
TraceManager.AddItemToList(nowUserId, itemId);
response.status = true;
response.message = "操作成功";
}
else
{
response.message = "请先登录";
}
return(JsonConvert.SerializeObject(response));
}