c#实现根据网络IP显示地理位置功能示例

Code highlighting produced by Actipro CodeHighlighter (freeware)http://.CodeHighlighter./--> 1 using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;
using System.Net;
using System.Net.Sockets;
namespace AjaxIP
{
public class IPLocation
{
public string IP { get; set; }
public string Country { get; set; }
public string Local { get; set; }
}
public class QQWryLocator
{
static Encoding encoding = Encoding.GetEncoding("GB2312");
private byte[] data;
int firstStartIpOffset;
int lastStartIpOffset;
int ipCount;
public int Count { get { return ipCount; } }
public QQWryLocator(string dataPath)
{
using (FileStream fs = new FileStream(dataPath, FileMode.Open, FileAess.Read, FileShare.Read))
{
data = new byte[fs.Length];
fs.Read(data, 0, data.Length);
}
firstStartIpOffset = (int)data[0] + (((int)data[1]) << 8) + (((int)data[2]) << 16) + (((int)data[3]) << 24);
lastStartIpOffset = (int)data[4] + (((int)data[5]) << 8) + (((int)data[6]) << 16) + (((int)data[7]) << 24);
ipCount = (lastStartIpOffset - firstStartIpOffset) / 7 + 1;
if (ipCount <= 1)
{
throw new ArgumentException("ip FileDataError");
}
}
public static uint IpToInt(string ip)
{
//string[] strArray = ip.Split('.');
//return (uint.Parse(strArray[0]) << 24) + (uint.Parse(strArray[1]) << 16) + (uint.Parse(strArray[2]) << 8) + uint.Parse(strArray[0]);
//return (uint)IPAddress.HostToNetworkOrder((int)(IPAddress.Parse(ip).Address));
byte[] bytes = IPAddress.Parse(ip).GetAddressBytes();
return (uint)bytes[3] + (((uint)bytes[2]) << 8) + (((uint)bytes[1]) << 16) + (((uint)bytes[0]) << 24);
}
public static string IntToIP(uint ip_Int)
{
return new IPAddress(ip_Int).ToString();
}
public IPLocation Query(string ip)
{
IPAddress address = IPAddress.Parse(ip);
if (address.AddressFamily != AddressFamily.InterNetwork)
{
throw new ArgumentException("不支持非IPV4的地址");
}
if (IPAddress.IsLoopback(address))
{
return new IPLocation() { IP = ip, Country = "本机内部环回地址", Local = string.Empty };
}
uint intIP = (uint)IPAddress.HostToNetworkOrder((int)address.Address);
//if ((((intIP >= IpToInt("0.0.0.0")) && (intIP <= IpToInt("2.255.255.255"))) || ((intIP >= IpToInt("64.0.0.0")) && (intIP <= IpToInt("126.255.255.255")))) ||
//((intIP >= IpToInt("58.0.0.0")) && (intIP <= IpToInt("60.255.255.255"))))
//if (intIP <= 50331647 || (intIP >= 1073741824 && intIP <= 2130706431) || (intIP >= 973078528 && intIP <= 1023410175))
//{
// return new IPLocation() { IP = ip, Country = "网络保留地址", Local = string.Empty };
/