java 获取请求ip，服务本地ip

    /**
     * 获取请求IP
     *
     * @param request
     * @return
     */
    public static String getRequestIpAddress(HttpServletRequest request) {
        String ipAddress = null;
        ipAddress = request.getHeader("X-Real_IP");
        // if (StringUtils.isEmpty(ipAddress) || StringUtils.isBlank(ipAddress)
        // || "unknown".equalsIgnoreCase(ipAddress))
        // ipAddress = request.getHeader("http_x_forwarded_for");
        if (StringUtils.isEmpty(ipAddress) || StringUtils.isBlank(ipAddress) || "unknown".equalsIgnoreCase(ipAddress))
            ipAddress = request.getHeader("x-forwarded-for");
        if (StringUtils.isEmpty(ipAddress) || StringUtils.isBlank(ipAddress) || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("Proxy-Client-IP");
        }
        if (StringUtils.isEmpty(ipAddress) || StringUtils.isBlank(ipAddress) || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("WL-Proxy-Client-IP");
        }
        if (StringUtils.isEmpty(ipAddress) || StringUtils.isBlank(ipAddress) || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getRemoteAddr();
            if (ipAddress.equals("127.0.0.1")) {
                // 根据网卡取本机配置的IP
                InetAddress inet = null;
                try {
                    inet = InetAddress.getLocalHost();
                } catch (UnknownHostException e) {
                    e.printStackTrace();
                }
                ipAddress = inet.getHostAddress();
            }

        }
        // 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
        if (ipAddress != null && ipAddress.length() > 15) {
            if (ipAddress.indexOf(",") > 0) {
                ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
            }
        }
        return ipAddress;
    }

上面的方法是获取请求ip。

下面的方法是获取服务本地ip。

 /**
      * 获取本机IP
      *
      * @return
      * @throws SocketException
      */
     public static String getLocalIpAddress() throws SocketException {
         String localip = null;// 本地IP，如果没有配置外网IP则返回它
         String netip = null;// 外网IP

         Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();
         InetAddress ip = null;
         boolean isFound = false;// 是否找到外网IP
         while (netInterfaces.hasMoreElements() && !isFound) {
             NetworkInterface ni = netInterfaces.nextElement();
             Enumeration<InetAddress> address = ni.getInetAddresses();
             while (address.hasMoreElements()) {
                 ip = address.nextElement();
                 if (!ip.isSiteLocalAddress() && !ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1) {// 外网IP
                     netip = ip.getHostAddress();
                     isFound = true;
                     break;
                 } else if (ip.isSiteLocalAddress() && !ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1) {// 内网IP
                     localip = ip.getHostAddress();
                 }
             }
         }

         if (netip != null && !"".equals(netip)) {
             return netip;
         } else {
             return localip;
         }
     }