async function (request, response, next) {
  const url = request.rawHeaders[9] + request.originalUrl;
  //or
  const url = request.headers.host + request.originalUrl;
}

你可以使用node.js API来获取url，并将来自express的信息传递给URL.format()，而不是自己将这些东西连接在一起。

例子:

var url = require('url');

function fullUrl(req) {
  return url.format({
    protocol: req.protocol,
    host: req.get('host'),
    pathname: req.originalUrl
  });
}

你可以从req of express得到完整的url。

function fetchPages(req, res, next) {

    let fullUrl = req.headers.host + req.originalUrl;
    console.log("full url ==> ",fullUrl);
}

通常我依赖这2个，取决于服务器和代理是否存在:

req.socket.remoteAddress

req.headers.referer

用这个,

var url = req.headers.host + '/' + req.url;

下面的代码对我来说就足够了!

const baseUrl = `${request.protocol}://${request.headers.host}`;
// http://127.0.0.1:3333