IP工具类

今天药忘吃喽~ 2021-12-08 18:11 208阅读 0赞

import org.junit.Test;
    
    public class demo {
        public static final String DEFAULT_SUBNET_MASK_A = "255.0.0.0";
        public static final String DEFAULT_SUBNET_MASK_B = "255.255.0.0";
        public static final String DEFAULT_SUBNET_MASK_C = "255.255.255.0";
        public static final String TYPE_IP_A = "A";
        public static final String TYPE_IP_B = "B";
        public static final String TYPE_IP_C = "C";
        public static final String TYPE_IP_D = "D";
        public static final String TYPE_IP_LOCATE = "locate";
    
        /**
         * 比对两个IP是否在同一网段
         * @param resourceIp
         * @param requestIp
         * @return
         */
        public static boolean isSameAddress(String resourceIp, String requestIp) {
            if (getIpType(resourceIp).equals(getIpType(requestIp))){
                return isSameAddress(resourceIp,requestIp,getIpDefaultMask(getIpType(resourceIp)));
            }
            return false;
        }
        //通过ip类型，获取默认IP子网掩码
        private static String getIpDefaultMask(String ipType){
            switch (ipType){
                case TYPE_IP_A:return DEFAULT_SUBNET_MASK_A;
                case TYPE_IP_B:return DEFAULT_SUBNET_MASK_B;
                case TYPE_IP_C:return DEFAULT_SUBNET_MASK_C;
                default:
                    return "没有对应的mask地址";
            }
        }
    
        public static boolean isSameAddress(String resourceIp, String requestIp, String subnetMask) {
            String resourceAddr = getAddrIp(resourceIp, subnetMask);
            String subnetMaskAddr = getAddrIp(requestIp, subnetMask);
            if (resourceAddr.equals(subnetMaskAddr)) {
                return true;
            }
            return false;
        }
        //获取ip的二进制字符串
        private static String getBinaryIp(String data) {
            String[] datas = data.split("\\.");
            String binaryIp = "";
            for (String ipStr : datas) {
                long signIp = Long.parseLong(ipStr);
                String binary = Long.toBinaryString(signIp);
                long binaryInt = Long.parseLong(binary);
                binaryIp += String.format("%08d", binaryInt);
            }
            return binaryIp;
        }
        //获取ip的地址位
        private static String getAddrIp(String ip, String subnetMask) {
            StringBuilder addrIp = new StringBuilder();
            String binaryIp = getBinaryIp(ip);
            String binarySubnetMask = getBinaryIp(subnetMask);
            for (int i = 0; i < 32; i++) {
                byte ipByte = Byte.parseByte(String.valueOf(binaryIp.charAt(i)));
                byte subnetMaskByte = Byte.parseByte(String.valueOf(binarySubnetMask.charAt(i)));
                addrIp.append(ipByte & subnetMaskByte);
            }
            return addrIp.toString();
        }
    
        /**
         * 获取ip类型  A,B,C..
         * @param ip
         * @return
         */
        public static String getIpType(String ip) {
            String binaryIp = getBinaryIp(ip);
            System.out.println(binaryIp);
            if (ip.startsWith("127")){
                return TYPE_IP_LOCATE;
            }
            if (binaryIp.startsWith("0")){
                return TYPE_IP_A;
            }
            if (binaryIp.startsWith("10")){
                return TYPE_IP_B;
            }
            if (binaryIp.startsWith("110")){
                return TYPE_IP_C;
            }
            if (binaryIp.startsWith("1110")){
                return TYPE_IP_D;
            }
           return "无效ip";
        }
        /**
         *String类型ip转换成int类型
         * @param ipOrMask
         * @return
         */
        public static int getIpV4Value(String ipOrMask)
        {
            byte[] addr = getIpV4Bytes(ipOrMask);
            int address1  = addr[3] & 0xFF;
            address1 |= ((addr[2] << 8) & 0xFF00);
            address1 |= ((addr[1] << 16) & 0xFF0000);
            address1 |= ((addr[0] << 24) & 0xFF000000);
            return address1;
        }
        /**
         * 根据ip获取字节数值
         * @param ipOrMask
         * @return
         */
        public static byte[] getIpV4Bytes(String ipOrMask)
        {
            try
            {
                String[] addrs = ipOrMask.split("\\.");
                int length = addrs.length;
                byte[] addr = new byte[length];
                for (int index = 0; index < length; index++)
                {
                    addr[index] = (byte) (Integer.parseInt(addrs[index]) & 0xff);
                }
                return addr;
            }
            catch (Exception e)
            {
            }
            return new byte[4];
        }
        /**
         * int类型ip转换为String类型ip
         * @param ipnum
         * @return
         */
        public static String getIpFromInt(int ipnum){
            StringBuilder sb=new StringBuilder();
            int num=0;
            boolean needPoint=false;
            for (int i = 0; i <4; i++) {
                if(needPoint){
                    sb.append('.');
                }
                needPoint=true;
                int offset=8*(3-i);
                num =(ipnum >> offset)&0xff;
                sb.append(num);
            }
            return sb.toString();
        }
        @Test
        public void test() {
            String ip_a="192.168.1.15";
            String ip_c="192.168.1.1";
            String binaryIp = getBinaryIp("192.168.1.1");
            System.out.println(getIpType(ip_a));
            System.out.println(isSameAddress(ip_a,ip_c));
        }
    
    }