java 獲取請求ip，服務本地ip

    /**
     * 獲取請求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")) {
                // 根據網卡取本機配置的IP
                InetAddress inet = null;
                try {
                    inet = InetAddress.getLocalHost();
                } catch (UnknownHostException e) {
                    e.printStackTrace();
                }
                ipAddress = inet.getHostAddress();
            }

        }
        // 對於通過多個代理的情況，第一個IP為客戶端真實IP,多個IP按照','分割
        if (ipAddress != null && ipAddress.length() > 15) {
            if (ipAddress.indexOf(",") > 0) {
                ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
            }
        }
        return ipAddress;
    }

 上面的方法是獲取請求ip。

 下面的方法是獲取服務本地ip。

/**
     * 獲取本機IP
     * 
     * @return
     * @throws SocketException
     */
    public static String getLocalIpAddress() throws SocketException {
        String localip = null;// 本地IP，如果沒有配置外網IP則返回它
        String netip = null;// 外網IP

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

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