我们使用 InetAddress 类的 getLocalAddress() 方法获取本机ip地址及主机名

完整代码

import java.net.InetAddress;public class Main {public static void main(String[] args) throws Exception {InetAddress addr = InetAddress.getLocalHost();System.out.println("Local HostAddress: "+addr.getHostAddress());String hostname = addr.getHostName();System.out.println("Local host name: "+hostname);}
}

结果输出

Local HostAddress: 192.168.1.3
Local host name: hang