使用淘宝ip地址库查ip的示例

使用淘宝ip地址库的api查询ip地址信息。

taobaoiphelper.cs

using system;
using system.collections.generic;
using system.linq;
using system.text;

namespace lixincommon
{
    /// <summary>
    /// 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:http://ip.taobao.com
    /// 作者：lixin
    /// 作者email：[e-mail]
    /// 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。
    /// </summary>
    public class taobaoiphelper
    {
        /// <summary>
        /// 查询ip信息
        /// </summary>
        /// <param name="ip"></param>
        /// <returns></returns>
        public static taobaoip getip(string ip)
        {
            system.net.webclient client = new system.net.webclient();
            try
            {
                string data = client.downloadstring("http://ip.taobao.com/service/getipinfo.php?ip=" + 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() { }
                };
            }
        }
        /// <summary>
        /// 根据域名返回域名的ip信息
        /// </summary>
        /// <param name="domain"></param>
        /// <returns></returns>
        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
    {
        /// <summary>
        /// 0：成功；1：失败
        /// </summary>
        public int code;
        /// <summary>
        /// ip响应信息
        /// </summary>
        public taobaoip_data data;
        /// <summary>
        /// 错误信息
        /// </summary>
        [nonserialized]
        public string errormsg;
    }
    public struct taobaoip_data
    {
        /// <summary>
        /// ip地址
        /// </summary>
        public string ip;
        /// <summary>
        /// 国家
        /// </summary>
        public string country;
        /// <summary>
        /// 区域
        /// </summary>
        public string area;
        /// <summary>
        /// 省份
        /// </summary>
        public string region;
        /// <summary>
        /// 城市
        /// </summary>
        public string city;
        /// <summary>
        /// 运营商
        /// </summary>
        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;
    }
}

taobaoip result1 = taobaoiphelper.getip("8.8.8.8");
            if (result1.code == 0)
            {
                console.writeline(string.format("调用成功。该ip的国家为{0},省份为{1},城市为{2},运营商为{3}"
                    , result1.data.country, result1.data.region, result1.data.city, result1.data.isp)
                    );
            }
            else
            {
                console.writeline("失败，原因为："+result1.errormsg);
            }
            taobaoip[] result2 = taobaoiphelper.getdomain("lixin.me");
            foreach (taobaoip item in result2)
            {
                if (item.code == 0)
                {
                    console.writeline(string.format("调用成功。该ip的国家为{0},省份为{1},城市为{2},运营商为{3}"
                    , item.data.country, item.data.region, item.data.city, item.data.isp)
                    );
                }
                else
                {
                    console.writeline("失败，原因为：" + item.errormsg);
                }
            }