Java-打印给定范围内的随机IP地址

Question

I am trying to get a random ip address from given range.

EX: startIp = "192.168.1.0" ; endIp = "192.168.2.255"

I tried of converting range to cidr and getting randomIp for cidr list using SubnetUtils but no luck.

Is there any effective way of generating a random ip from given ip-range or an api which can do this?

Thanks in advance.

Answer 1

You can achieve by following the steps:

1. Convert the two IPs to numeric values

 InetAddress i= InetAddress.getByName(IPString); int intRepresentation= ByteBuffer.wrap(i.getAddress()).getInt(); 

2. Generate random between the limits

 r.nextInt(High-Low) + Low; 

3. Convert result back numeric to IP

 i= InetAddress.getByName(String.valueOf(intRepresentation)); String ip= i.getHostAddress();