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【CSharp】通过ip获取地理信息

作者:彩连 / 发布于2015/4/14/ 773


	/// <summary>
	 /// 通过IP得到IP所在地省市（Porschev）
	 /// </summary>
	 /// <param name="ip"></param>
	 /// <returns></returns>
	 public string GetAdrByIp(string ip)
	 {
	 string url = "http://www.cz88.net/ip/?ip=" + ip;
	 string regStr = "(?<=<span\\s*id=\\\"cz_addr\\\">).*?(?=</span>)";
	 //得到网页源码
	 string html = GetHtml(url);
	 Regex reg = new Regex(regStr, RegexOptions.None);
	 Match ma = reg.Match(html);
	 html = ma.Value;
	 string[] arr = html.Split(' ');
	 return arr[0];
	 }
	 /// <summary>
	 /// 获取HTML源码信息(Porschev)
	 /// </summary>
	 /// <param name="url">获取地址</param>
	 /// <returns>HTML源码</returns>
	 public string GetHtml(string url)
	 {
	 string str = "";
	 try
	 {
	 Uri uri = new Uri(url);
	 WebRequest wr = WebRequest.Create(uri);
	 Stream s = wr.GetResponse().GetResponseStream();
	 StreamReader sr = new StreamReader(s, Encoding.Default);
	 str = sr.ReadToEnd();
	 }
	 catch (Exception e)
	 {
	 }
	 return str;
	 }
	 /// <summary>
	 /// 得到真实IP以及所在地详细信息（Porschev）
	 /// </summary>
	 /// <returns></returns>
	 public string GetIpDetails()
	 {
	 //设置获取IP地址和国家源码的网址
	 string url = "http://www.ip138.com/ips8.asp";
	 string regStr = "(?<=<td\\s*align=\\\"center\\\">)[^<]*?(?=<br/><br/></td>)";
	 //IP正则
	 string ipRegStr = "((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)";
	 //IP地址
	 string ip = string.Empty;
	 //国家
	 string country = string.Empty;
	 //省市
	 string adr = string.Empty;
	 //得到网页源码
	 string html = GetHtml(url);
	 Regex reg = new Regex(regStr, RegexOptions.None);
	 Match ma = reg.Match(html); html = ma.Value;
	 Regex ipReg = new Regex(ipRegStr, RegexOptions.None);
	 ma = ipReg.Match(html);
	 //得到IP
	 ip = ma.Value;
	 int index = html.LastIndexOf("：") + 1;
	 //得到国家
	 country = html.Substring(index);
	 adr = GetAdrByIp(ip);
	 return "IP：" + ip + " 国家：" + country + " 省市：" + adr;
	 }

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