JAVA IP工具类

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工具类   *    *    */  public class IpUtil {         /**       * 获取登录用户的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;      }         /**       * 通过IP获取地址(需要联网，调用淘宝的IP库)       *        * @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;      }     }