这里有一个可能是最干净、最简单的答案，没有依赖关系，而且适用于所有平台。

const { lookup } = require('dns').promises;
const { hostname } = require('os');

async function getMyIPAddress(options) {
  return (await lookup(hostname(), options))
    .address;
}

这里有一个可能是最干净、最简单的答案，没有依赖关系，而且适用于所有平台。

const { lookup } = require('dns').promises;
const { hostname } = require('os');

async function getMyIPAddress(options) {
  return (await lookup(hostname(), options))
    .address;
}

对于任何对简洁感兴趣的人来说，这里有一些“一行程序”，它们不需要不是标准Node.js安装的一部分的插件/依赖项:

eth0的公共IPv4、IPv6地址为阵列:

var ips = require('os').networkInterfaces().eth0.map(function(interface) {
    return interface.address;
});

eth0的第一个公网IP地址(一般为IPv4):

var ip = require('os').networkInterfaces().eth0[0].address;

对上面答案的改进，原因如下:

Code should be as self-explanatory as possible. Enumerating over an array using for...in... should be avoided. for...in... enumeration should be validated to ensure the object's being enumerated over contains the property you're looking for. As JavaScript is loosely typed and the for...in... can be handed any arbitrary object to handle; it's safer to validate the property we're looking for is available. var os = require('os'), interfaces = os.networkInterfaces(), address, addresses = [], i, l, interfaceId, interfaceArray; for (interfaceId in interfaces) { if (interfaces.hasOwnProperty(interfaceId)) { interfaceArray = interfaces[interfaceId]; l = interfaceArray.length; for (i = 0; i < l; i += 1) { address = interfaceArray[i]; if (address.family === 'IPv4' && !address.internal) { addresses.push(address.address); } } } } console.log(addresses);

公认的答案是异步的。我想要一个同步版本:

var os = require('os');
var ifaces = os.networkInterfaces();

console.log(JSON.stringify(ifaces, null, 4));

for (var iface in ifaces) {
  var iface = ifaces[iface];
  for (var alias in iface) {
    var alias = iface[alias];

    console.log(JSON.stringify(alias, null, 4));

    if ('IPv4' !== alias.family || alias.internal !== false) {
      debug("skip over internal (i.e. 127.0.0.1) and non-IPv4 addresses");
      continue;
    }
    console.log("Found IP address: " + alias.address);
    return alias.address;
  }
}
return false;

对于Underscore.js和Lodash，正确的一行代码是:

var ip = require('underscore')
    .chain(require('os').networkInterfaces())
    .values()
    .flatten()
    .find({family: 'IPv4', internal: false})
    .value()
    .address;