用户信息表，是大多数系统都有的。我们也知道，通常都会有类似 注册IP 和 最后登录IP 这两个的字段，来存储用户注册时候的IP地址和最后登录的IP的地址。
获取这样的地址，在后台显示 xxx.xxx.xxx.xxx 的地址段，让人看到很不自然，根本就不知道具体地理位置。
现在我们就简单的实现一下这个功能。
用到了读取纯真IP数据库的公用组件QQWry.NET 这个组件，作者阿不。（谢谢他的共享）
还要去下载最新的纯真IP地址库，下载获得QQWry.dat
最后请出Js中的小靓妞，jquery-1.3.1.js
新建Web项目AjaxIP，将QQWry.dat添加到App_Data下。
然后添加QQWry.NET的组件类，如下：
复制代码 代码如下:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 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, FileAccess.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 };
//}
IPLocation ipLocation = new IPLocation() { IP = ip };
uint right = (uint)ipCount;
uint left = 0;
uint middle = 0;
uint startIp = 0;
uint endIpOff = 0;
uint endIp = 0;
int countryFlag = 0;
while (left (right - 1))
{
middle = (right + left) / 2;
startIp = GetStartIp(middle, out endIpOff);
if (intIP == startIp)
{
left = middle;
break;
}
if (intIP > startIp)
{
left = middle;
}
else
{
right = middle;
}
}
startIp = GetStartIp(left, out endIpOff);
endIp = GetEndIp(endIpOff, out countryFlag);
if ((startIp = intIP) (endIp >= intIP))
{
string local;
ipLocation.Country = GetCountry(endIpOff, countryFlag, out local);
ipLocation.Local = local;
}
else
{
ipLocation.Country = "未知";
ipLocation.Local = string.Empty;
}
return ipLocation;
}
private uint GetStartIp(uint left, out uint endIpOff)
{
int leftOffset = (int)(firstStartIpOffset + (left * 7));
endIpOff = (uint)data[4 + leftOffset] + (((uint)data[5 + leftOffset]) 8) + (((uint)data[6 + leftOffset]) 16);
return (uint)data[leftOffset] + (((uint)data[1 + leftOffset]) 8) + (((uint)data[2 + leftOffset]) 16) + (((uint)data[3 + leftOffset]) 24);
}
private uint GetEndIp(uint endIpOff, out int countryFlag)
{
countryFlag = data[4 + endIpOff];
return (uint)data[endIpOff] + (((uint)data[1 + endIpOff]) 8) + (((uint)data[2 + endIpOff]) 16) + (((uint)data[3 + endIpOff]) 24);
}
/// summary>
/// Gets the country.
/// /summary>
/// param name="endIpOff">The end ip off./param>
/// param name="countryFlag">The country flag./param>
/// param name="local">The local./param>
/// returns>country/returns>
private string GetCountry(uint endIpOff, int countryFlag, out string local)
{
string country = string.Empty;
uint offset = endIpOff + 4;
switch (countryFlag)
{
case 1:
case 2:
country = GetFlagStr(ref offset, ref countryFlag, ref endIpOff);
offset = endIpOff + 8;
local = (1 == countryFlag) ? string.Empty : GetFlagStr(ref offset, ref countryFlag, ref endIpOff);
break;
default:
country = GetFlagStr(ref offset, ref countryFlag, ref endIpOff);
local = GetFlagStr(ref offset, ref countryFlag, ref endIpOff);
break;
}
return country;
}
private string GetFlagStr(ref uint offset, ref int countryFlag, ref uint endIpOff)
{
int flag = 0;
while (true)
{
flag = data[offset];
//没有重定向
if (flag != 1 flag != 2)
{
break;
}
if (flag == 2)
{
countryFlag = 2;
endIpOff = offset - 4;
}
offset = (uint)data[1 + offset] + (((uint)data[2 + offset]) 8) + (((uint)data[3 + offset]) 16);
}
if (offset 12)
{
return string.Empty;
}
return GetStr(ref offset);
}
/// summary>
/// 读取字符串...
/// /summary>
/// param name="offset">/param>
/// returns>/returns>
private string GetStr(ref uint offset)
{
byte lowByte = 0;
byte highByte = 0;
StringBuilder stringBuilder = new StringBuilder(16);
while (true)
{
lowByte = data[offset++];
if (lowByte == 0)
{
return stringBuilder.ToString();
}
if (lowByte > 0x7f)
{
highByte = data[offset++];
if (highByte == 0)
{
return stringBuilder.ToString();
}
stringBuilder.Append(encoding.GetString(new byte[] { lowByte, highByte }));
}
else
{
stringBuilder.Append((char)lowByte);
}
}
}
}
}
再来新建 IPSearch.ashx 文件，如下：
复制代码 代码如下:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 1 using System;
using System.Collections;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;
namespace AjaxIP
{
/// summary>
/// IP查询 的摘要说明
/// /summary>
public class IPSearch : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string ip = context.Request["ip"];
string ipFilePath = @"\App_Data\QQWry.dat";
QQWryLocator QQWry = new QQWryLocator(ipFilePath);
IPLocation loc = QQWry.Query(ip);
context.Response.Write(string.Format("{0} {1}",loc.Country,loc.Local));
}
public bool IsReusable
{
get
{
return false;
}
}
}
}
最后在Default.aspx页面写下，js和有IP的用户信息，如下：
复制代码 代码如下:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 1 !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
html xmlns="http://www.w3.org/1999/xhtml" >
head runat="server">
title>/title>
script language="javascript" src="Js/jquery-1.3.1.js">/script>
script language="javascript">
$(document).ready(function() {
$("#tb tr").each(function() {
var obj = $(this).children("td:eq(2)");
SearchIP(obj);
});
})
function SearchIP(obj) {
$.ajax({
type: "GET",
url: "IPSearch.ashx?ip=" + obj.text(),
success: function(data) {
obj.text(data);
}
});
}
/script>
/head>
body>
form id="form1" runat="server">
div>
table id="tb" style="width:100%;">
thead>
th>321321/th>
th>321321/th>
th>321321/th>
/thead>
tr>
td>
OMEGA/td>
td>
0/td>
td>
122.229.191.8/td>
/tr>
tr>
td>
荒年/td>
td>
900,000/td>
td>
110.87.98.30/td>
/tr>
tr>
td>
寒妃/td>
td>
1,854,257,979/td>
td>
220.188.193.72/td>
/tr>
tr>
td>
哈小土/td>
td>
600,100/td>
td>
220.188.193.72/td>
/tr>
tr>
td>
化妆造型/td>
td>
400,100/td>
td>
220.188.193.72/td>
/tr>
/table>
/div>
/form>
/body>
/html>
这样我们的后台用户信息不再是不友好的IP地址段了。
运行一下，看看效果吧.
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