public async Task <BaseResponse <StoringResponse> > PostItem(PostRequest param)
{
var uri = http.GetUri("item", new { }.AsDictionary());
var request = new HttpRequestMessage(HttpMethod.Post, uri)
{
Content = new FormUrlEncodedContent(param.AsDictionary())
};
var res = await http.SendAsync(request);
var a = res.Content.ReadAsStringAsync().Result;
return(JsonConvert.DeserializeObject <BaseResponse <StoringResponse> >(a));
}