从MVC控制器使用Web API时返回JSON结果

使用Json.Net，您可以执行以下操作：

public async Task GetUserMenu()
{
    string result = string.Empty;

    using (HttpClient client = new HttpClient())
    {
        client.BaseAddress = new Uri(url);
        HttpResponseMessage response = await client.GetAsync(url);

        if (response.IsSuccessStatusCode)
        {
            result = await response.Content.ReadAsStringAsync();
        }
    }

    return Json(Newtonsoft.Json.JsonConvert.DeserializeObject(result));
}