获取客户端Ip地址网上方案总结

客户端：

<script language="javascript">
    xml = new ActiveXObject("Microsoft.XMLHTTP");
    xml.open("GET", "http://www.ip138.com/ip2city.asp", false);
    xml.send();
    kk = xml.ResponseText;
    i = kk.indexOf("[");
    ie = kk.indexOf("]");
    ip = kk.substring(i + 1, ie);
    document.write("您的外网IP地址是:" + ip );  
</script>

<script type="text/javascript"> 

  function GetLocalIPAddress()
{
    var obj = null;
    var rslt = "";
    try
    {
        obj = new ActiveXObject("rcbdyctl.Setting");
        rslt = obj.GetIPAddress;
        obj = null;
    }
    catch(e)
    {
        //异常发生
    }
   
    return rslt;
}

document.write("你的IP是：" + GetLocalIPAddress());
 
</script>

服务器端：
Servlet获取客户端的IP与MAC地址
.
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public class CheckMACandIP extends HttpServlet {
  public CheckMACandIP() {
   super();
  }
  public void destroy() {
   super.destroy();
}
  public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
   doPost(request,response);
  }

public void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
   String ip = getRemoteAddress(request);
   System.out.println(ip);
   System.out.println(getMACAddress(ip));
  }
  public void init() throws ServletException {
  }
  public String getRemoteAddress(HttpServletRequest request){   
     String ip = request.getHeader("x-forwarded-for");   
     if(ip == null || ip.length() == 0 || ip.equalsIgnoreCase("unknown")) ip = request.getHeader("Proxy-Client-IP");  
      if(ip == null || ip.length() == 0 || ip.equalsIgnoreCase("unknown")) ip = request.getHeader("WL-Proxy-Client-IP");  
      if(ip == null || ip.length() == 0 || ip.equalsIgnoreCase("unknown")) ip = request.getRemoteAddr();  
      return ip;   
}
   public String getMACAddress(String ip){
          String str = "";
          String macAddress = "";
          try {
              Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);
              InputStreamReader ir = new InputStreamReader(p.getInputStream());
              LineNumberReader input = new LineNumberReader(ir);
              for (int i = 1; i < 100; i++) {
                  str = input.readLine();
                  if (str != null) {
                      if (str.indexOf("MAC Address") > 1) {
                          macAddress = str.substring(str.indexOf("MAC Address") + 14, str.length());
                          break;
                      }
                  }
              }
          } catch (IOException e) {
              e.printStackTrace(System.out);
          }
          return macAddress;
      }
}