使用淘宝ip地址库查ip的示例2

&#;using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace LixinCommon
{
///

/// 淘宝IP地址库帮助类。
/// 提供查询ip地址信息功能。
/// 服务的主页:
/// 作者：lixin
/// 作者Email：
/// 日期：2014年3月30日
/// 备注：为了保障服务正常运行，每个用户的访问频率需小于10qps。
///

public class TaobaoIPHelper
{
///

/// 查询ip信息
///

///
///
public static TaobaoIP GetIP(string ip)
{
System.Net.WebClient client=new System.Net.WebClient();
try
{
string data=client.DownloadString("" + ip);
//当code==1时，表示失败
if (data.IndexOf(""code":1") > -1)
{
return new TaobaoIP()
{
code=1,
errorMsg=data
};
}
using (System.IO.MemoryStream mm=new System.IO.MemoryStream(Encoding.UTF8.GetBytes(data)))
{
System.Runtime.Serialization.Json.DataContractJsonSerializer myJson=new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(TaobaoIP));
TaobaoIP item=(TaobaoIP)myJson.ReadObject(mm);

return item;
}
}
catch (Exception ex)
{
return new TaobaoIP()
{
code=1,
errorMsg=ex.Message,
data=new TaobaoIP_Data() { }
};
}
}
///

/// 根据域名返回域名的ip信息
///

///
///
public static TaobaoIP[] GetDomain(string domain)
{
System.Net.IPAddress[] ips=System.Net.Dns.GetHostAddresses(domain);
TaobaoIP[] result=new TaobaoIP[ips.Length];
for (int i=0, j=ips.Length; i < j; i++)
{
result[i]=GetIP(ips[i].ToString());
}
return result;
}
}
public struct TaobaoIP
{
///

/// 0：成功；1：失败
///

public int code;
///

/// ip响应信息
///

public TaobaoIP_Data data;
///

/// 错误信息
///

[NonSerialized]
public string errorMsg;
}
public struct TaobaoIP_Data
{
///

/// ip地址
///

public string ip;
///

/// 国家
///

public string country;
///

/// 区域
///

public string area;
///

/// 省份
///

public string region;
///

/// 城市
///

public string city;
///

/// 运营商
///

public string isp;
public string country_id;
public string area_id;
public string region_id;
public string city_id;
public string county_id;
public string isp_id;
}
}