在 Node.js 中获取本地 IP 地址 [英] Get local IP address in Node.js

问题描述

我的机器上运行了一个简单的 Node.js 程序，我想获取运行我的程序的 PC 的本地 IP 地址.我如何使用 Node.js 获取它?

I have a simple Node.js program running on my machine and I want to get the local IP address of a PC on which my program is running. How do I get it with Node.js?

推荐答案

此信息可在 中找到os.networkInterfaces(), — 一个对象，将网络接口名称映射到其属性(例如，一个接口可以有多个地址):

This information can be found in os.networkInterfaces(), — an object, that maps network interface names to its properties (so that one interface can, for example, have several addresses):

'use strict';

const { networkInterfaces } = require('os');

const nets = networkInterfaces();
const results = Object.create(null); // Or just '{}', an empty object

for (const name of Object.keys(nets)) {
    for (const net of nets[name]) {
        // Skip over non-IPv4 and internal (i.e. 127.0.0.1) addresses
        if (net.family === 'IPv4' && !net.internal) {
            if (!results[name]) {
                results[name] = [];
            }
            results[name].push(net.address);
        }
    }
}

// 'results'
{
  "en0": [
    "192.168.1.101"
  ],
  "eth0": [
    "10.0.0.101"
  ],
  "<network name>": [
    "<ip>",
    "<ip alias>",
    "<ip alias>",
    ...
  ]
}

// results["en0"][0]
"192.168.1.101"

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