Is it possible to set the filesystem root and/or the document root to some subdirectory of the filesystem?

I would like to know if 开发者_开发问答it is possible to specify a subdirectory for the filesystem root or the document root for requests of static resources (if there's any such distinction) in node.js.

I know that I can do it by concatenating an absolute path from the root, but I'm wondering if it can be done on an application-wide level.

I haven't found anything in the documentation supports it, but perhaps I'm overlooking it.

EDIT: I should mention that I'm not interested in using a 3rd party library at this point.

Check out expressjs

http://expressjs.com/guide.html#configuration

Specifically

app.use(express.static(__dirname + '/public', { maxAge: oneYear }));

Express/connect has a 'static' middleware for this use case. There are other smaller packages just for static file serving, however, express is nice and well maintained.

The API does not allow you to do what you're asking for directly. You will need to use string concat.

I've tried the following script with nodejs and works well. it takes the current path as document root to serve.

app.js

var http = require('http');
var express = require('express');
var app = express();
app.use(express.static('./'));
var server = http.createServer(app);
server.listen(8080,'127.0.0.1',function() {
    console.log('listen to 127.0.0.1:8080');
});

the reference is here: http://expressjs.com/starter/static-files.html