如果使用express…

req.ip

我在查这个，然后我想，等等，我用的是快递。咄。

这里有很多很棒的观点，但没有一个是全面的，所以这里是我最终使用的:

function getIP(req) {
  // req.connection is deprecated
  const conRemoteAddress = req.connection?.remoteAddress
  // req.socket is said to replace req.connection
  const sockRemoteAddress = req.socket?.remoteAddress
  // some platforms use x-real-ip
  const xRealIP = req.headers['x-real-ip']
  // most proxies use x-forwarded-for
  const xForwardedForIP = (() => {
    const xForwardedFor = req.headers['x-forwarded-for']
    if (xForwardedFor) {
      // The x-forwarded-for header can contain a comma-separated list of
      // IP's. Further, some are comma separated with spaces, so whitespace is trimmed.
      const ips = xForwardedFor.split(',').map(ip => ip.trim())
      return ips[0]
    }
  })()
  // prefer x-forwarded-for and fallback to the others
  return xForwardedForIP || xRealIP || sockRemoteAddress || conRemoteAddress
}

你可以使用request-ip来获取用户的ip地址。它处理了很多不同的边界情况，其中一些在其他答案中提到过。

披露:我创建了这个模块

安装:

npm install request-ip

在你的应用中:

var requestIp = require('request-ip');

// inside middleware handler
var ipMiddleware = function(req, res, next) {
    var clientIp = requestIp.getClientIp(req); // on localhost > 127.0.0.1
    next();
};

希望这能有所帮助

也有同样的问题…im也是新的javascript，但我解决了这个与req.connection.remoteAddress;这给了我IP地址(但在ipv6格式::ffff.192.168.0.101)，然后.slice删除前7位数字。

var ip = req.connection.remoteAddress;

if (ip.length < 15) 
{   
   ip = ip;
}
else
{
   var nyIP = ip.slice(7);
   ip = nyIP;
}

我试过了，但都没用，

console.log(clientIp);
console.log(req.ip);

console.log(req.headers['x-forwarded-for']);
console.log(req.connection.remoteAddress);
console.log(req.socket.remoteAddress);
console.log(req.connection.socket.remoteAddress.split(",")[0]);

当在Nginx代理后运行Express应用程序时，你必须将应用程序变量信任代理设置为true。Express提供了其他一些信任代理值，您可以在它们的文档中查看这些值，但以下步骤对我来说是有效的。

app.set('trust proxy'， true)

App.set('信任代理'，true);

在Nginx中添加proxy_set_header X-Forwarded-For $remote_addr 服务器块的配置。

位置/ { proxy_pass http://localhost: 3001; proxy_http_version 1.1; 升级$http_upgrade; 连接“升级”; 主机$ Host; proxy_set_header X-Forwarded-For $remote_addr;#这一行 proxy_cache_bypass http_upgrade美元; ｝

对象中读取客户端的IP地址 req.header('x-forwarded-for')或req.connection.remoteAddress;ipfilter的完整代码

module.exports = function(req, res, next) { let enable = true; // true/false let blacklist = ['x.x.x.x']; let whitelist = ['x.x.x.x']; let clientIp = req.header('x-forwarded-for') || req.connection.remoteAddress; if (!clientIp) { return res.json('Error'); } if (enable && paths.some((path) => (path === req.originalUrl))) { let blacklist = blacklist || []; if (blacklist.some((ip) => clientIp.match(ip) !== null)) { return res.json({ status: 401, error: 'Your IP is black-listed !'}); } let whitelist = whitelist || []; if (whitelist.length === 0 || whitelist.some((ip) => clientIp.match(ip) !== null)) { next(); return; } else { return res.json({ status: 401, error: 'Your IP is not listed !'}); } } next(); };

    const express = require('express')
    const app = express()
    const port = 3000

    app.get('/', (req, res) => {
    var ip = req.ip
    console.log(ip);
    res.send('Hello World!')
    })

   // Run as nodejs ip.js
    app.listen(port, () => {
    console.log(`Example app listening at http://localhost:${port}`)
    })