java获取本机网卡ip地址

要获取本机网卡的IP地址，你可以使用Java的`NetworkInterface`类。下面是一个示例代码，它可以获取本机所有网卡的IP地址：

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

public class Main {
    public static void main(String[] args) {
        try {
            Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
            while (networkInterfaces.hasMoreElements()) {
                NetworkInterface networkInterface = networkInterfaces.nextElement();
                Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();
                while (inetAddresses.hasMoreElements()) {
                    InetAddress inetAddress = inetAddresses.nextElement();
                    if (!inetAddress.isLoopbackAddress() && inetAddress.getHostAddress().indexOf(":") == -1) {
                        System.out.println("网卡名称: " + networkInterface.getDisplayName());
                        System.out.println("IP地址: " + inetAddress.getHostAddress());
                    }
                }
            }
        } catch (SocketException e) {
            e.printStackTrace();
        }
    }
}

这段代码会遍历所有的网络接口，然后获取每个接口的所有IP地址。注意，过滤掉了回环地址和IPv6地址。运行代码后，你将会得到每个网卡的名称和对应的IP地址。