java如何获取本机IP?

发布网友发布时间：2022-04-23 01:12

共5个回答

好二三四时间：2022-06-10 17:16

很多朋友都想知道java如何获取本地ip？下面就一起来了解一下吧~

获取java本地ip一共有两种方法：1、inetAddress类；2、封装方法。

1、 inetAddress类

通过InetAddress的实例对象包含以数字形式保存的IP地址，同时还可能包含主机名（如果使用主机名来获取InetAddress的实例，或者使用数字来构造，并且启用了反向主机名解析的功能）。InetAddress类提供了将主机名解析为IP地址（或反之）的方法。其生成InetAddress对象的方法。

import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.UnknownHostException;
public class Main {
    public static void main(String[] args) throws UnknownHostException {
        //Inet4Address address= (Inet4Address) Inet4Address.getLocalHost();
        InetAddress address = InetAddress.getLocalHost();
        System.out.println(address);//获取计算机名称和ip地址
        String hostAddress = address.getHostAddress();
        System.out.println(hostAddress);//获取ip地址
        String hostName = address.getHostName();
        System.out.println(hostName);//获取计算机名称
    }
}

2、封装方法。

    public static String getLocalIp() {
        Enumeration<NetworkInterface> netInterfaces = null;
        try {
            netInterfaces = NetworkInterface.getNetworkInterfaces();
            while (netInterfaces.hasMoreElements()) {
                NetworkInterface nif = netInterfaces.nextElement();
                Enumeration<InetAddress> InetAddress = nif.getInetAddresses();
                while (InetAddress.hasMoreElements()) {
                    String ip = InetAddress.nextElement().getHostAddress();
                    if (ip.startsWith("192.168")) {
                        return ip;
                    }
                }
            }
        } catch (SocketException e) {
        }
        return "127.0.0.1";
    }

以上就是小编今天的分享了，希望可以帮到大家。

热心网友时间：2022-06-10 14:41

import java.net.*;

public class Test6 {

public static void main(String[] args) {
// TODO Auto-generated method stub
InetAddress ia=null;
try {
ia=ia.getLocalHost();

String localname=ia.getHostName();
String localip=ia.getHostAddress();
System.out.println("本机名称是："+ localname);
System.out.println("本机的ip是："+localip);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

}

热心网友时间：2022-06-10 16:16

InetAddress addr = InetAddress.getLocalHost();
　　ip=addr.getHostAddress().toString;//获得本机IP
　　address=addr.getHostName()toString;//获得本机名称

热心网友时间：2022-06-10 18:07

貌似这个很爽
import java.net.InetAddress;
import java.net.UnknownHostException;

class Demo {
public static void main(String[] args) throws UnknownHostException {
InetAddress ip = InetAddress.getLocalHost();

System.out.println("本机的IP ： " + ip.getHostAddress());
System.out.println("本机的计算机名：" + ip.getHostName());
}
}

===============下面这个也可以==================
import java.io.IOException;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;
class Demo {
public static void main(String[] args) throws IOException {
Enumeration<NetworkInterface> allNetInterfaces = NetworkInterface.getNetworkInterfaces();
InetAddress ip = null;
while (allNetInterfaces.hasMoreElements()) {
NetworkInterface netInterface = (NetworkInterface)allNetInterfaces.nextElement();
// System.out.println(netInterface.getName());
Enumeration<InetAddress> addresses = netInterface.getInetAddresses();
while (addresses.hasMoreElements()) {
ip = (InetAddress) addresses.nextElement();
if (ip != null && ip instanceof Inet4Address) {
System.out.println("本机的IP = " + ip.getHostAddress());
}
}
}
}
}

==============
偶是菜,纯粹复制转载的,抛异常导下包,弄个泛型,注释了一行而已____异常貌似抛错了.求指教,是否需要try catch环绕

=================

试了一下环绕

import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
class Demo {
public static void main(String[] args) {
Enumeration<NetworkInterface> allNetInterfaces = null;
try {
allNetInterfaces = NetworkInterface
.getNetworkInterfaces();
} catch (SocketException e) {
e.printStackTrace();
}
InetAddress ip = null;
while (allNetInterfaces.hasMoreElements()) {
NetworkInterface netInterface = (NetworkInterface) allNetInterfaces
.nextElement();
// System.out.println(netInterface.getName());
Enumeration<InetAddress> addresses = netInterface
.getInetAddresses();
while (addresses.hasMoreElements()) {
ip = (InetAddress) addresses.nextElement();
if (ip != null && ip instanceof Inet4Address) {
System.out.println("本机的IP = " + ip.getHostAddress());
}
}
}
}
}

继续求指教

热心网友时间：2022-06-10 20:15

就是刚才那高手回答的能给你解决问题

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java如何获取本机IP?