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【CSharp】根据ip获取城市等相关信息

作者:彩连 / 发布于2015/4/14/ 926


	/// <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;
	}
	/// <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];
	}

	复制代码 代码如下:

	/// <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;
	}

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