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小編給大家分享一下c#如何實現根據網絡IP顯示地理位置功能,相信大部分人都還不怎么了解,因此分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后大有收獲,下面讓我們一起去了解一下吧!
用戶信息表,是大多數系統都有的。我們也知道,通常都會有類似 注冊IP 和 最后登錄IP 這兩個的字段,來存儲用戶注冊時候的IP地址和最后登錄的IP的地址。
獲取這樣的地址,在后臺顯示 xxx.xxx.xxx.xxx 的地址段,讓人看到很不自然,根本就不知道具體地理位置。
現在我們就簡單的實現一下這個功能。
用到了讀取純真IP數據庫的公用組件QQWry.NET 這個組件,作者阿不。(謝謝他的共享)
還要去下載最新的純真IP地址庫,下載獲得QQWry.dat
最后請出Js中的小靚妞,jquery-1.3.1.js
新建Web項目AjaxIP,將QQWry.dat添加到App_Data下。
然后添加QQWry.NET的組件類,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 = "本機內部環回地址", 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 = "網絡保留地址", 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]; //沒有重定向 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> /// 讀取字符串... /// </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); } } } } }
再來新建 IPSearch.ashx 文件,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查詢 的摘要說明 /// </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頁面寫下,js和有IP的用戶信息,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" > <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> 化妝造型</td> <td> 400,100</td> <td> 220.188.193.72</td> </tr> </table> </div> </form> </body> </html>
這樣我們的后臺用戶信息不再是不友好的IP地址段了。
運行一下,看看效果吧.
C#是一個簡單、通用、面向對象的編程語言,它由微軟Microsoft開發,繼承了C和C++強大功能,并且去掉了一些它們的復雜特性,C#綜合了VB簡單的可視化操作和C++的高運行效率,以其強大的操作能力、優雅的語法風格、創新的語言特性和便捷的面向組件編程從而成為.NET開發的首選語言,但它不適用于編寫時間急迫或性能非常高的代碼,因為C#缺乏性能極高的應用程序所需要的關鍵功能。
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