获取地址

 

 

public class GetIpAddress

{

    //获取本机IP地址

    public static String getLocalIp()throws UnknownHostException

    {

        InetAddress addr=InetAddress.getLocalHost();

        return addr.getHostAddress();

    }

 

    //获取本机机器名

    public static String getLocalName()throws UnknownHostException

    {

        InetAddress addr=InetAddress.getLocalHost();

        return addr.getHostName();

    }

 

 

    //根据域名获取主机Ip地址

    public static String[] getAllIpByName(String hostName) throws UnknownHostException

    {

        InetAddress []addr=InetAddress.getAllByName(hostName);

        String []ips=new String[addr.length];

        for(int i=0;i<ips.length;i++)

        {

            ips[i]=addr[i].getHostAddress();

        }

        return ips;

    }

    public static String getIpByName(String hostName) throws UnknownHostException

    {

        InetAddress addr=InetAddress.getByName(hostName);

 

        return addr.getHostAddress();

    }

 

    public static void main(String[] args)

    {

        // TODO 自动生成的方法存根

        try

        {

            System.out.println("本机ip： "+getLocalIp());

            System.out.println("本机名字： "+getLocalName());

        //某网站的ip

            String zhihu="www.zhihu.com";

            //System.out.println("知乎的IP:"+getIpByName(zhihu));

 

 

            String []zhiHuIps=getAllIpByName(zhihu);

            System.out.println("知乎的IP:"+zhiHuIps.length);

            for(int i=0;i<zhiHuIps.length;i++)

            System.out.println(zhiHuIps[i]);

 

 

        } catch (Exception e)

        {

            // TODO: handle exception

            System.err.println("找不到网址");

            //e.printStackTrace();

        }

    }

 

}