java - 如何使用JAVA获取局域网IP地址

Question

我想获取连接到 LAN 的笔记本电脑的 IP 地址。这个地址必须从JAVA获取。

为此，我有以下代码来获取所有 IP 地址的列表。

try
        {
            Enumeration e = NetworkInterface.getNetworkInterfaces();
            while(e.hasMoreElements())
            {
                NetworkInterface n = (NetworkInterface) e.nextElement();
                Enumeration ee = n.getInetAddresses();
                while (ee.hasMoreElements())
                {
                    InetAddress i = (InetAddress) ee.nextElement();
                    String address; 
                    address = i.getHostAddress(); 
                    System.out.println(i.getHostAddress());
                }
            } 
        }
        catch( SocketException SE)
        {
            SE.printStackTrace();
        }

现在我得到了以下 IP 地址列表。

127.0.0.1
0:0:0:0:0:0:0:1
192.168.10.99
fe80:0:0:0:4c55:cf87:67a0:2%10
192.168.115.215
fe80:0:0:0:a972:d8d9:c94c:4263%11
fe80:0:0:0:707c:b434:bf95:4940%12
192.168.15.1
fe80:0:0:0:1d59:66f7:e68e:31d%15 is reachable
fe80:0:0:0:1d59:66f7:e68e:31d%15
192.168.38.1
fe80:0:0:0:553f:f180:b540:75ff%16

但是我怎样才能获得我的 LAN IP 地址呢？我的局域网IP地址是192.168.10.99。

Answer 1

这个 conde 片段对我帮助很大。

 String IP()
    {
        String IP_address = "";
        int count = 0 ;
        try{
            Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
            while (interfaces.hasMoreElements())
            {
                NetworkInterface current = interfaces.nextElement();
              //  System.out.println(current);
                if (!current.isUp() || current.isLoopback() || current.isVirtual()) continue;
                Enumeration<InetAddress> addresses = current.getInetAddresses();
                while (addresses.hasMoreElements()){
                    InetAddress current_addr = addresses.nextElement();
                    if (current_addr.isLoopbackAddress()) continue;
                    if (current_addr instanceof Inet4Address &&  count == 0)
                    {
                        IP_address = current_addr.getHostAddress() ; 
                        System.out.println(current_addr.getHostAddress());
                         count++;
                        break;
                    }
                }
            }
        }
        catch(SocketException SE)
        {
            SE.printStackTrace();
        } 
        return  IP_address;
    }