if (ipArr.length != 2) {
throw new IllegalArgumentException("invalid ipAndMask with: "
+ ipAndMask);
}
int netMask = Integer.valueOf(ipArr[1].trim());
if (netMask < 0 || netMask > 31) {
throw new IllegalArgumentException("invalid ipAndMask with: "
+ ipAndMask);
}
int ipInt = IPv4Util.ipToInt(ipArr[0]);
int netIP = ipInt & (0xFFFFFFFF << (32 - netMask));
int hostScope = (0xFFFFFFFF >>> netMask);
return new int[] { netIP, netIP + hostScope };
}
/**
* 把192.168.1.1/24 转化为IP数组范围
* @param ipAndMask
* @return String[]
*/
public static String[] getIPAddrScope(String ipAndMask) {
int[] ipIntArr = IPv4Util.getIPIntScope(ipAndMask);
return new String[] { IPv4Util.intToIp(ipIntArr[0]),
IPv4Util.intToIp(ipIntArr[0]) };
}
/**
* 根据IP 子网掩码（192.168.1.1 255.255.255.0）转化为IP段
* @param ipAddr ipAddr
* @param mask mask
* @return int[]
*/
public static int[] getIPIntScope(String ipAddr, String mask) {
int ipInt;
int netMaskInt = 0, ipcount = 0;
try {
ipInt = IPv4Util.ipToInt(ipAddr);
if (null == mask || "".equals(mask)) {
return new int[] { ipInt, ipInt };
}
netMaskInt = IPv4Util.ipToInt(mask);
ipcount = IPv4Util.ipToInt("255.255.255.255") - netMaskInt;
int netIP = ipInt & netMaskInt;
int hostScope = netIP + ipcount;
return new int[] { netIP, hostScope };
} catch (Exception e) {
throw new IllegalArgumentException("invalid ip scope express ip:"
+ ipAddr + " mask:" + mask);
}
/**
* 根据IP 子网掩码（192.168.1.1 255.255.255.0）转化为IP段
* @param ipAddr ipAddr
* @param mask mask
* @return String[]
*/
public static String[] getIPStrScope(String ipAddr, String mask) {
int[] ipIntArr = IPv4Util.getIPIntScope(ipAddr, mask);
return new String[] { IPv4Util.intToIp(ipIntArr[0]),
IPv4Util.intToIp(ipIntArr[0]) };
}
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
String ipAddr = "192.168.8.1";
byte[] bytearr = IPv4Util.ipToBytesByInet(ipAddr);
StringBuffer byteStr = new StringBuffer();
for (byte b : bytearr) {
if (byteStr.length() == 0) {
byteStr.append(b);
} else {
byteStr.append("," + b);
}
}
System.out.println("IP: " + ipAddr + " ByInet --> byte[]: [ " + byteStr
+ " ]");
bytearr = IPv4Util.ipToBytesByReg(ipAddr);
byteStr = new StringBuffer();
for (byte b : bytearr) {
if (byteStr.length() == 0) {
byteStr.append(b);
} else {
byteStr.append("," + b);
}
}
System.out.println("IP: " + ipAddr + " ByReg --> byte[]: [ " + byteStr
+ " ]");
System.out.println("byte[]: " + byteStr + " --> IP: "
+ IPv4Util.bytesToIp(bytearr));
int ipInt = IPv4Util.ipToInt(ipAddr);
System.out.println("IP: " + ipAddr + " --> int: " + ipInt);
System