获取本地的IP地址

bluescorpio 2021-11-15 原文

Windows下2种方法:
1.
使用拨号上网的话，一般都有一个本地ip和一个外网ip，使用python可以很容易的得到这两个ip
使用gethostbyname和gethostbyname_ex两个函数可以实现

import socket
localIP = socket.gethostbyname(socket.gethostname())#得到本地ip
print “local ip:%s “%localIP

ipList = socket.gethostbyname_ex(socket.gethostname())
for i in ipList:
if i != localIP:
print “external IP:%s“%i

import socket

myname = socket.getfqdn(socket.gethostname())
myaddr = socket.gethostbyname(myname)

还有一种Linux下的方法可以用的是：

Uses the Linux SIOCGIFADDR ioctl to find the IP address associated with a network interface, given the name of that interface, e.g. “eth0”. The address is returned as a string containing a dotted quad.

import socket
import fcntl
import struct

def get_ip_address(ifname):
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    return socket.inet_ntoa(fcntl.ioctl(
        s.fileno(),
        0x8915,  # SIOCGIFADDR
        struct.pack(\’256s\’, ifname[:15])
    )[20:24])

>>> get_ip_address(\’lo\’)
\’127.0.0.1\’

>>> get_ip_address(\’eth0\’)
\’38.113.228.130\’

Java版本：

    private Set getAllLocalHostIP() throws UnknownHostException{
        Set result = new HashSet();
        InetAddress addr = InetAddress.getLocalHost();
        String hostName = addr.getHostName();
        if(hostName.length() > 0){
            InetAddress[] addrs = InetAddress.getAllByName(hostName);
            if(addrs.length > 0){
                for(int i=0; i<addrs.length; i++){
                    result.add(addrs[i].getHostAddress());
                }
            }
        }

        result.add(“127.0.0.1“);
        return result;
    }