java - 检查ipAddress是否在私有(private)范围内

Question

如何检查 IP 地址是否属于私有(private)类别？

    if(isPrivateIPAddress(ipAddress)) {
        //do something
    }

如有任何建议，我们将不胜感激。

更新的答案

    private static boolean isPrivateIPAddress(String ipAddress) {

            InetAddress ia = null;

            try {
                InetAddress ad = InetAddress.getByName(ipAddress);
                byte[] ip = ad.getAddress();
                ia = InetAddress.getByAddress(ip);
            } catch (UnknownHostException e) {
                e.printStackTrace();
                return false;
            }

            return ia.isSiteLocalAddress();
        }

我编写了这个方法，它对我来说工作正常。但是在任何情况下这种方法都行不通吗？我只是想确保它适用于所有情况。

Answer 1

正确的方法是InetAddress.isSiteLocalAddress() .

Utility routine to check if the InetAddress is a site local address.

Returns: a boolean indicating if the InetAddress is a site local address; or false if address is not a site local unicast address.