如何将UUID转换为BASE64，反之亦然

import java.util.Base64;
import java.util.UUID;

public class UUIDConverter {
    public static String uuidToBase64(UUID uuid) {
        byte[] bytes = new byte[16];
        long msb = uuid.getMostSignificantBits();
        long lsb = uuid.getLeastSignificantBits();
        for (int i = 0; i < 8; i++) {
            bytes[i] = (byte) (msb >>> 8 * (7 - i));
            bytes[i + 8] = (byte) (lsb >>> 8 * (7 - i));
        }
        return Base64.getEncoder().encodeToString(bytes);
    }

    public static UUID base64ToUUID(String base64) {
        byte[] bytes = Base64.getDecoder().decode(base64);
        long msb = 0;
        long lsb = 0;
        for (int i = 0; i < 8; i++) {
            msb = (msb << 8) | (bytes[i] & 0xff);
            lsb = (lsb << 8) | (bytes[i + 8] & 0xff);
        }
        return new UUID(msb, lsb);
    }

    public static void main(String[] args) {
        UUID uuid = UUID.randomUUID();
        System.out.println("UUID: " + uuid.toString());

        String base64 = uuidToBase64(uuid);
        System.out.println("BASE64: " + base64);

        UUID convertedUuid = base64ToUUID(base64);
        System.out.println("Converted UUID: " + convertedUuid.toString());
    }
}