你如何获得Subnet
使用Java的本地系统的掩码地址?
本地主机接口的第一个地址的网络掩码:
InetAddress localHost = Inet4Address.getLocalHost();
NetworkInterface networkInterface = NetworkInterface.getByInetAddress(localHost);
networkInterface.getInterfaceAddresses().get(0).getNetworkPrefixLength();
更完整的方法:
InetAddress localHost = Inet4Address.getLocalHost();
NetworkInterface networkInterface = NetworkInterface.getByInetAddress(localHost);
for (InterfaceAddress address : networkInterface.getInterfaceAddresses()) {
System.out.println(address.getNetworkPrefixLength());
}
/24 表示 255.255.255。
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