const fullUrl = `${protocol}://${host}:${port}${url}`
      
    const responseString = `Full URL is: ${fullUrl}`;                       
    res.send(responseString);  
})

var full_address = req.protocol + "://" + req.headers.host + req.originalUrl;

or

var full_address = req.protocol + "://" + req.headers.host + req.baseUrl;

你可以像这样在路由中使用这个函数

app.get('/one/two', function (req, res) {
    const url = getFullUrl(req);
}

/**
 * Gets the self full URL from the request
 * 
 * @param {object} req Request
 * @returns {string} URL
 */
const getFullUrl = (req) => `${req.protocol}://${req.headers.host}${req.originalUrl}`;

要求的事情。Protocol会给出HTTP或https， Req.headers.host会给你完整的主机名，比如www.google.com， 要求的事情。originalUrl会给出剩下的路径名(在你的例子中是/one/two)

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

使用url.format:

var url = require('url');

这支持所有协议，包括端口号。如果你的originalUrl中没有查询字符串，你可以使用这个更干净的解决方案:

var requrl = url.format({
    protocol: req.protocol,
    host: req.get('host'),
    pathname: req.originalUrl,
});

如果你有一个查询字符串:

var urlobj = url.parse(req.originalUrl);
urlobj.protocol = req.protocol;
urlobj.host = req.get('host');
var requrl = url.format(urlobj);

我的代码是这样的，

params['host_url'] = req.protocol + '：//' + req.headers.host + req.url;