C# 根据ip获取城市等相关信息

复制代码 代码如下:

  /// <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;

  }