Чтобы сделать хорошо, нужно сделать без express, например, аналог Вашего кода:
var http = require('http');
var me = { name: 'jura', age: 22 };
var routing = {
'/': 'welcome to homepage',
'/user': me,
'/user/name': function() { return me.name; },
'/user/age': function() { return me.age; }
};
var types = {
object: function(o) { return JSON.stringify(o); },
string: function(s) { return s; },
undefined: function() { return 'not found'; },
function: function(fn, req, res) { return fn(req, res) + ''; },
};
http.createServer(function (req, res) {
var data = routing[req.url],
result = types[typeof(data)](data, req, res);
res.end(result);
}).listen(80);
И более универсальный вариант с параметрами:
var http = require('http');
var me = { name: 'jura', age: 22 };
var routing = {
'/': 'welcome to homepage',
'/user': me,
'/user/name': function() { return me.name; },
'/user/age': function() { return me.age; },
'/user/*': function(client, par) { return 'parameter=' + par[0]; }
};
var types = {
object: function(o) { return JSON.stringify(o); },
string: function(s) { return s; },
number: function(n) { return n + ''; },
undefined: function() { return 'not found'; },
function: function(fn, par, client) { return fn(client, par); }
};
var matching = [];
for (key in routing) {
if (key.indexOf('*') !== -1) {
var rx = new RegExp(key.replace('*', '(.*)'));
matching.push([rx, routing[key]]);
delete routing[key];
}
}
function router(client) {
var rx, par, route = routing[client.req.url];
if (route === undefined) {
for (var i = 0, len = matching.length; i < len; i++) {
rx = matching[i];
par = client.req.url.match(rx[0]);
if (par) {
par.shift();
route = rx[1];
break;
}
}
}
var renderer = types[typeof(route)];
return renderer(route, par, client);
}
http.createServer(function (req, res) {
res.end(router({ req: req, res: res }) + '');
}).listen(80);
