java获取客户端ip地址工具类

 public class IpUtils {
     private static final String[] HEADERS = {
         "X-Forwarded-For",
         "Proxy-Client-IP",
         "WL-Proxy-Client-IP",
         "HTTP_X_FORWARDED_FOR",
         "HTTP_X_FORWARDED",
         "HTTP_X_CLUSTER_CLIENT_IP",
         "HTTP_CLIENT_IP",
         "HTTP_FORWARDED_FOR",
         "HTTP_FORWARDED",
         "HTTP_VIA",
         "REMOTE_ADDR",
         "X-Real-IP"
     };

     /**
      * 判断ip是否为空，空返回true
      * @param ip
      * @return
      */
     public static boolean isEmptyIp(final String ip){
         return (ip == null || ip.length() == 0 || ip.trim().equals("") || "unknown".equalsIgnoreCase(ip));
     }

     /**
      * 判断ip是否不为空，不为空返回true
      * @param ip
      * @return
      */
     public static boolean isNotEmptyIp(final String ip){
         return !isEmptyIp(ip);
     }

     /***
      * 获取客户端ip地址(可以穿透代理)
      * @param request HttpServletRequest
      * @return
      */
     public static String getIpAddress(HttpServletRequest request) {
         String ip = "";
         for (String header : HEADERS) {
             ip = request.getHeader(header);
             if(isNotEmptyIp(ip)) {
                 break;
             }
         }
         if(isEmptyIp(ip)){
             ip = request.getRemoteAddr();
         }
         if(isNotEmptyIp(ip) && ip.contains(",")){
             ip = ip.split(",")[0];
         }
         if("0:0:0:0:0:0:0:1".equals(ip)){
             ip = "127.0.0.1";
         }
         return ip;
     }

     /**
      * 获取本机的局域网ip地址，兼容Linux
      * @return String
      * @throws Exception
      */
     public String getLocalHostIP() throws Exception{
         Enumeration<NetworkInterface> allNetInterfaces = NetworkInterface.getNetworkInterfaces();
         String localHostAddress = "";
         while(allNetInterfaces.hasMoreElements()){
             NetworkInterface networkInterface = allNetInterfaces.nextElement();
             Enumeration<InetAddress> address = networkInterface.getInetAddresses();
             while(address.hasMoreElements()){
                 InetAddress inetAddress = address.nextElement();
                 if(inetAddress != null && inetAddress instanceof Inet4Address){
                     localHostAddress = inetAddress.getHostAddress();
                 }
             }
         }
         return localHostAddress;
     }

 }