如何从api中获取代码中的数据

Question

如何从api codebehind文件获取国家/地区名称，以便我可以使用它在gridview中显示？

foreach (var i in data)
string country = "http://www.geoplugin.net/json.gp?ip=xx.xx.xx.xx"
country=country+"i.ip";
i.Country = country;

Answer 1

创建一个包含来自http://www.geoplugin.net/json.gp的键作为String属性的类。最小值如下：

   public class GeoPlugin
    {
        public String geoplugin_countryName { get; set; }
    }

执行HttpWebRequest并将JSON响应反序列化到您创建的类中并访问country属性：

String url = String.Format("http://www.geoplugin.net/json.gp?ip={0}", "173.194.112.31");
HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
httpWebRequest.Method = WebRequestMethods.Http.Get;
httpWebRequest.Accept = "application/json";
HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (StreamReader streamReader = new StreamReader(httpWebResponse.GetResponseStream()))
{
   JavaScriptSerializer jss = new JavaScriptSerializer();
   var result = jss.Deserialize<GeoPlugin>(streamReader.ReadToEnd());
   i.Country = result.geoplugin_countryName;
}

要使用JavaScriptSerializer，您需要引用System.Web.Extensions（版本4.0）而不使用.net 4.0客户端配置文件。