getLocalHost() 显示错误的 IP 地址

Question

我正在尝试执行以下代码。我是 Java 新手，所以这是我第一次接触 java.net。程序中没有错误，但我得到的本地主机地址为 192.168.56.1，而我的 IP 为 192.168.2.10

import java.net.*;
class InetAddressDemo
{
    public static void main(String[] args)
    {
        try
        {
            InetAddress address = InetAddress.getLocalHost();
            System.out.println("\nLocalhost Address : " + address + "\n");
        }
        catch (Exception e)
        {
            System.out.println(e);
        }
    }
}

Answer 1

您应该枚举网络接口，因为您可能有多个接口。 getLocalHost()仅返回您机器的环回地址。

Enumeration Interfaces = NetworkInterface.getNetworkInterfaces();
while(Interfaces.hasMoreElements())
{
    NetworkInterface Interface = (NetworkInterface)Interfaces.nextElement();
    Enumeration Addresses = Interface.getInetAddresses();
    while(Addresses.hasMoreElements())
    {
        InetAddress Address = (InetAddress)Addresses.nextElement();
        System.out.println(Address.getHostAddress());
    }
 }