java获取客户端ip 及通过ip获取mac地址后台代码（借鉴别人）

你的名字 2022-07-26 12:28 12阅读 0赞

1，java获取客户端登录ip地址

protected String getIpAddr(HttpServletRequest request) {
    		String ip = request.getHeader("X-Forwarded-For");
    		if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {
    			ip = request.getHeader("Proxy-Client-IP");
    		}
    		if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {
    			ip = request.getHeader("WL-Proxy-Client-IP");
    		}
    		if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {
    			ip = request.getHeader("HTTP_CLIENT_IP");
    		}
    		if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {
    			ip = request.getHeader("HTTP_X_FORWARDED_FOR");
    		}
    		if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {
    			ip = request.getRemoteAddr();
    		}
    		return ip;
    	}

2，java通过ip地址获取Mac地址

/**
    		 * 通过IP地址获取MAC地址
    		 * @param ip String,127.0.0.1格式
    		 * @return mac String
    		 * @throws Exception
    		 */
    		public String getMACAddress(String ip) throws Exception {
    			String line = "";
    			String macAddress = "";
    			final String MAC_ADDRESS_PREFIX = "MAC Address = ";
    			final String LOOPBACK_ADDRESS = "127.0.0.1";
    			//如果为127.0.0.1,则获取本地MAC地址。
    			if (LOOPBACK_ADDRESS.equals(ip)) {
    				InetAddress inetAddress = InetAddress.getLocalHost();
    				//貌似此方法需要JDK1.6。
    				byte[] mac = NetworkInterface.getByInetAddress(inetAddress).getHardwareAddress();
    				//下面代码是把mac地址拼装成String
    				StringBuilder sb = new StringBuilder();
    				for (int i = 0; i < mac.length; i++) {
    					if (i != 0) {
    						sb.append("-");
    					}
    					//mac[i] & 0xFF 是为了把byte转化为正整数
    					String s = Integer.toHexString(mac[i] & 0xFF);
    					sb.append(s.length() == 1 ? 0 + s : s);
    				}
    				//把字符串所有小写字母改为大写成为正规的mac地址并返回
    				macAddress = sb.toString().trim().toUpperCase();
    				return macAddress;
    			}
    			//获取非本地IP的MAC地址
    			try {
    				Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);
    				InputStreamReader isr = new InputStreamReader(p.getInputStream());
    				BufferedReader br = new BufferedReader(isr);
    				while ((line = br.readLine()) != null) {
    					if (line != null) {
    						int index = line.indexOf(MAC_ADDRESS_PREFIX);
    						if (index != -1) {
    							macAddress = line.substring(index + MAC_ADDRESS_PREFIX.length()).trim().toUpperCase();
    						}
    					}
    				}
    				br.close();
    			} catch (IOException e) {
    				e.printStackTrace(System.out);
    			}
    			return macAddress;
    		}

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