import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import javax.servlet.http.HttpServletRequest;

public class sinaIpUtil {
  
  public static void main(String[] args) {
  
    String ip = "223.104.145.001";
    String[] areaArr = getAreaInfoList(ip);
    for (int i = 0; i < areaArr.length; i++) {
      System.out.println(areaArr[i]);
    }

  }
  
  public static String[] getAreaInfoList(String ip){
    String urlString = "";
    String[] areaArr = new String[10]; 
    String[] newAreaArr = new String[3];
    urlString = "http://int.dpool.sina.com.cn/iplookup/iplookup.php&#63;ip="+ip;
    try {
      URL url = new URL(urlString);
      HttpURLConnection conn = (HttpURLConnection) url.openConnection();
      conn.connect();
      InputStream is = conn.getInputStream();
      BufferedReader br = new BufferedReader(new InputStreamReader(is,"gb2312"));
      String line ="";
      StringBuffer resultBuffer = new StringBuffer();
      while ((line=br.readLine())!=null) {
        resultBuffer.append(line);
        
      }
      br.close();
      is.close();
      conn.disconnect();
      areaArr = (resultBuffer.toString()).split("  ");
      newAreaArr[0] = areaArr[3];
      newAreaArr[1] = areaArr[4];
      newAreaArr[2]=areaArr[5];
    } catch (Exception e) {
      // TODO: handle exception
    }
    
    return newAreaArr;
  }
  
  /**
   * 
   * @param request
   * @param flag
   *      0:表示apache或者其它做主服務(wù)器; 1:表示nginx做主服務(wù).
   * @return 
   */
  public static String getRemoteAddr(HttpServletRequest request, int flag) {
    String result = "";
    int port = 80;
    try {
      port = request.getServerPort();
      if (flag == 1) {
        if (port == 80)
          result = request.getHeader("X-Real-IP");
        else
          result = request.getRemoteAddr();
      } else {
        result = request.getRemoteAddr();
      }

    } catch (Exception e) {
      ;
    } finally {
      return result;
    }
  }

}

<script src="http://int.dpool.sina.com.cn/iplookup/iplookup.php&#63;format=js" type="text/javascript"></script>
 <script type="text/javascript">
   function getIpPlace() {
     alert(remote_ip_info["province"] + "省" + , + remote_ip_info["city"] + "市")
   } 
</script>