Java获取客户端mac地址

墨蓝 2022-03-20 13:39 381阅读 0赞

**问题：**  
项目中需要实现一个功能，在用户登录的时候，要求系统账号和计算机绑定，只有绑定的账号才可以登录，并且每个账号只能绑定一台计算机。

**解决方案：**  
通过请求IP获取mac地址，然后将账号与mac地址进行绑定。

**代码实现如下：**

String getMacInfo(HttpServletRequest request)
        {
            //获取ip地址
            String macInfo = null;
            try
            {
                String ip = request.getRemoteAddr();
                //linux下获取mac地址
                macAddr = CommonUtils.getMac(ip);
                //windows下获取mac地址
                if(StringUtils.isBlank(macAddr)){
                    macAddr = CommonUtils.getMacInWindows(ip).trim();
                }
            }
            catch (Exception e)
            {
                log.error("获取mac地址失败");
                return null;
            }
            return macInfo;
        }

CommonUtils.java

// 从类unix机器上获取mac地址
    	 public static String getMac(String ip) throws IOException {
            String mac = SysCode.BDFH.EMPTY;
            if (ip != null) {
                try {
                    Process process = Runtime.getRuntime().exec("arp "+ip);
                    InputStreamReader ir = new InputStreamReader(process.getInputStream());
                    LineNumberReader input = new LineNumberReader(ir);
                    String line;
                    StringBuffer s = new StringBuffer();
                    while ((line = input.readLine()) != null) {
                        s.append(line);
                    }
                    mac = s.toString();
                    if (StringUtils.isNotBlank(mac)) {
                        mac = mac.substring(mac.indexOf(":") - 2, mac.lastIndexOf(":") + 3);
                    }
                    return mac;
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            return mac;
        }
        
        // 从windows机器上获取mac地址
    	public static String getMacInWindows(final String ip) {
            String result = "";
            String[] cmd = {"cmd", "/c", "ping " + ip};
            String[] another = {"cmd", "/c", "ipconfig -all"};
            // 获取执行命令后的result
            String cmdResult = callCmd(cmd, another);
            // 从上一步的结果中获取mac地址
            result = filterMacAddress(ip, cmdResult, "-");
            return result;
     	}
     	
     	// 命令执行
     	public static String callCmd(String[] cmd, String[] another) {
            String result = "";
            String line = "";
            try {
                Runtime rt = Runtime.getRuntime();
                // 执行第一个命令
                Process proc = rt.exec(cmd);
                proc.waitFor();
                 // 执行第二个命令
                proc = rt.exec(another);
                InputStreamReader is = new InputStreamReader(proc.getInputStream());
                BufferedReader br = new BufferedReader(is);
                while ((line = br.readLine()) != null) {
                    result += line;
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return result;
        }
    	
    	// 获取mac地址
    	public static String filterMacAddress(final String ip, final String sourceString, final String macSeparator) {
            String result = "";
            String regExp = "((([0-9,A-F,a-f]{1,2}" + macSeparator + "){1,5})[0-9,A-F,a-f]{1,2})";
            Pattern pattern = Pattern.compile(regExp);
            Matcher matcher = pattern.matcher(sourceString);
            while (matcher.find()) {
                result = matcher.group(1);
                // 因计算机多网卡问题，截取紧靠IP后的第一个mac地址
                int num = sourceString.indexOf(ip) - sourceString.indexOf(": "+result + " ");
                if (num>0&&num<300) {
                    break;
                }
            }
            return result;
        }

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