青椒灬炒蛋 2013-11-14 20:55 采纳率: 25%
浏览 11445
已采纳

java如何获取客户端登入时的ip

我做了一个网站,如何获取客户端登入时客户端的ip,求大神指教

  • 写回答

3条回答 默认 最新

  • a_jian 2013-11-15 00:45
    关注
     /**
     * 通过HttpServletRequest返回IP地址
     * @param request HttpServletRequest
     * @return ip String
     * @throws Exception
     */
    public String getIpAddr(HttpServletRequest request) throws Exception {
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_CLIENT_IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }
    
    
    
     /**
     * 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;
    }
    

    展开全部

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(2条)
编辑
预览

报告相同问题?

悬赏问题

  • ¥15 指定IP电脑的访问设置
  • ¥30 matlab ode45 未发现警告,但是运行出错
  • ¥15 vscode platformio
  • ¥15 代写uni代码,app唤醒
  • ¥15 全志t113i启动qt应用程序提示internal error
  • ¥15 ensp可以看看嘛.
  • ¥80 51单片机C语言代码解决单片机为AT89C52是清翔单片机
  • ¥60 优博讯DT50高通安卓11系统刷完机自动进去fastboot模式
  • ¥15 minist数字识别
  • ¥15 在安装gym库的pygame时遇到问题,不知道如何解决
手机看
程序员都在用的中文IT技术交流社区

程序员都在用的中文IT技术交流社区

专业的中文 IT 技术社区,与千万技术人共成长

专业的中文 IT 技术社区,与千万技术人共成长

关注【CSDN】视频号,行业资讯、技术分享精彩不断,直播好礼送不停!

关注【CSDN】视频号,行业资讯、技术分享精彩不断,直播好礼送不停!

客服 返回
顶部