JAVA IP工具類

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;

import javax.servlet.http.HttpServletRequest;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
/**

IP工具類

*/
public class IpUtil {
/**

獲取登錄用戶的IP地址

@param request
@return
*/
public static String getIpAddr(HttpServletRequest request) {
 String ip = request.getHeader("x-forwarded-for");
 if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

 ip = request.getHeader("Proxy-Client-IP");

}
 if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

 ip = request.getHeader("WL-Proxy-Client-IP");

}
 if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

 ip = request.getRemoteAddr();

}
 if (ip.equals("0:0:0:0:0:0:0:1")) {

 ip = "本地";

}
 if (ip.split(",").length > 1) {

 ip = ip.split(",")[0];

}
 return ip;
}
/**

通過IP獲取地址(需要聯網，調用淘寶的IP庫)

@param ip
@return
*/
public static String getIpInfo(String ip) {
 if (ip.equals("本地")) {

 ip = "127.0.0.1";

}
 String info = "";
 try {

 URL url = new URL("http://ip.taobao.com/service/getIpInfo.php?ip=" + ip);
 HttpURLConnection htpcon = (HttpURLConnection) url.openConnection();
 htpcon.setRequestMethod("GET");
 htpcon.setDoOutput(true);
 htpcon.setDoInput(true);
 htpcon.setUseCaches(false);

 InputStream in = htpcon.getInputStream();
 BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in));
 StringBuffer temp = new StringBuffer();
 String line = bufferedReader.readLine();
 while (line != null) {
     temp.append(line).append("\r\n");
     line = bufferedReader.readLine();
 }
 bufferedReader.close();
 JSONObject obj = (JSONObject) JSON.parse(temp.toString());
 if (obj.getIntValue("code") == 0) {
     JSONObject data = obj.getJSONObject("data");
     info += data.getString("country") + " ";
     info += data.getString("region") + " ";
     info += data.getString("city") + " ";
     info += data.getString("isp");
 }

} catch (MalformedURLException e) {

 e.printStackTrace();

} catch (ProtocolException e) {

 e.printStackTrace();

} catch (IOException e) {

 e.printStackTrace();

}
 return info;
}




}</pre>