import java.lang.Long; public class MacUtil { /** * MAC地址转换为Long型 * * @param strMac * @return Long */ public static long macToLong(String strMac) { long[] mac = new long[6]; // 先找到MAC地址字符串中:的位置 int position1 = strMac.indexOf("-"); int position2 = strMac.indexOf("-", position1 + 1); int position3 = strMac.indexOf("-", position2 + 1); int position4 = strMac.indexOf("-", position3 + 1); int position5 = strMac.indexOf("-", position4 + 1); // 将每个:之间的字符串转换成整型 mac[0] = Long.parseLong(strMac.substring(0, position1),16); mac[1] = Long.parseLong(strMac.substring(position1 + 1, position2),16); mac[2] = Long.parseLong(strMac.substring(position2 + 1, position3),16); mac[3] = Long.parseLong(strMac.substring(position3 + 1, position4),16); mac[4] = Long.parseLong(strMac.substring(position4 + 1, position5),16); mac[5] = Long.parseLong(strMac.substring(position5 + 1),16); return (mac[0] << 40) + (mac[1] << 32) + (mac[2] << 24) + (mac[3] << 16) + (mac[4] << 8) + mac[5]; } /** * Long型转换为MAC地址(不补0) * * @param longMac * @return String */ public static String longToMac(long longMac) { StringBuffer sb = new StringBuffer(""); // 直接右移24位 sb.append(Long.toHexString(longMac >>> 40).toUpperCase()); sb.append("-"); // 将高8位置0，然后右移32位 sb.append(Long.toHexString((longMac >>> 32) & 0x00FF).toUpperCase()); sb.append("-"); // 将高16位置0，然后右移24位 sb.append(Long.toHexString((longMac >>> 24) & 0x0000FF).toUpperCase()); sb.append("-"); // 将高24位置0，然后右移16位 sb.append(Long.toHexString((longMac >>> 16) & 0x000000FF).toUpperCase()); sb.append("-"); // 将高32位置0，然后右移8位 sb.append(Long.toHexString((longMac >>> 8) & 0x00000000FF).toUpperCase()); sb.append("-"); // 将高40位置0 sb.append(Long.toHexString(longMac & 0x0000000000FF).toUpperCase()); return sb.toString(); } }