获取IP地址工具类

快来打我* 2022-05-12 04:00 436阅读 0赞

权限系统IP工具类

  1. @Slf4j
  2. public class IpUtil { 
  4.     public final static String ERROR_IP = "127.0.0.1";
  6.     public final static Pattern pattern = Pattern.
  7.             compile("(2[5][0-5]|2[0-4]\\d|1\\d{2}|\\d{1,2})\\.(25[0-5]|2[0-4]\\d|1\\d{2}|\\d{1,2})\\.(25[0-5]|2[0-4]\\d|1\\d{2}|\\d{1,2})\\.(25[0-5]|2[0-4]\\d|1\\d{2}|\\d{1,2})");
  9.     /** * 取外网IP * * @param request * @return */
  10.     public static String getRemoteIp(HttpServletRequest request) {
  11.         String ip = request.getHeader("x-real-ip");
  12.         if (ip == null) {
  13.             ip = request.getRemoteAddr();
  14.         }
  16.         //过滤反向代理的ip
  17.         String[] stemps = ip.split(",");
  18.         if (stemps != null && stemps.length >= 1) {
  19.             //得到第一个IP，即客户端真实IP
  20.             ip = stemps[0];
  21.         }
  23.         ip = ip.trim();
  24.         if (ip.length() > 23) {
  25.             ip = ip.substring(0, 23);
  26.         }
  28.         return ip;
  29.     }
  31.     /** * 获取用户的真实ip * * @param request * @return */
  32.     public static String getUserIP(HttpServletRequest request) {
  34.         // 优先取X-Real-IP
  35.         String ip = request.getHeader("X-Real-IP");
  36.         if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
  37.             ip = request.getHeader("x-forwarded-for");
  38.         }
  40.         if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
  41.             ip = request.getRemoteAddr();
  42.             if ("0:0:0:0:0:0:0:1".equals(ip)) {
  43.                 ip = ERROR_IP;
  44.             }
  45.         }
  47.         if ("unknown".equalsIgnoreCase(ip)) {
  48.             ip = ERROR_IP;
  49.             return ip;
  50.         }
  52.         int pos = ip.indexOf(',');
  53.         if (pos >= 0) {
  54.             ip = ip.substring(0, pos);
  55.         }
  57.         return ip;
  58.     }
  60.     public static String getLastIpSegment(HttpServletRequest request) {
  61.         String ip = getUserIP(request);
  62.         if (ip != null) {
  63.             ip = ip.substring(ip.lastIndexOf('.') + 1);
  64.         } else {
  65.             ip = "0";
  66.         }
  67.         return ip;
  68.     }
  70.     public static boolean isValidIP(HttpServletRequest request) {
  71.         String ip = getUserIP(request);
  72.         return isValidIP(ip);
  73.     }
  75.     /** * 判断我们获取的ip是否是一个符合规则ip * * @param ip * @return */
  76.     public static boolean isValidIP(String ip) {
  77.         if (StringUtils.isEmpty(ip)) {
  78.             log.debug("ip is null. valid result is false");
  79.             return false;
  80.         }
  82.         Matcher matcher = pattern.matcher(ip);
  83.         boolean isValid = matcher.matches();
  84.         log.debug("valid ip:" + ip + " result is: " + isValid);
  85.         return isValid;
  86.     }
  88.     public static String getLastServerIpSegment() {
  89.         String ip = getServerIP();
  90.         if (ip != null) {
  91.             ip = ip.substring(ip.lastIndexOf('.') + 1);
  92.         } else {
  93.             ip = "0";
  94.         }
  95.         return ip;
  96.     }
  98.     public static String getServerIP() {
  99.         InetAddress inet;
  100.         try {
  101.             inet = InetAddress.getLocalHost();
  102.             String hostAddress = inet.getHostAddress();
  103.             return hostAddress;
  104.         } catch (UnknownHostException e) {
  105.             e.printStackTrace();
  106.         }
  107.         return "127.0.0.1";
  108.     }
  109. }

使用

  1. user.setOperateIp(IpUtil.getRemoteIp(RequestHolder.getCurrentRequest()));

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