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Copy pathMacUtil.java
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61 lines (53 loc) · 2.22 KB
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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();
}
}