如何避免使用Express将所有路由添加到NodeJS中的app对象？

Question

In my NodeJS application using Express it seems like I need to add all my "get" paths to the "app" express variable. It would be nice if I only had to register the module and not register each route. I'm coming from an ASP.NET MVC background where if I make a Controller class then it gets automatically routed to. Is there a way to make Express work like this or do I need to add the routes to this one ever growing file of paths? Can it do some sort of reflection or is there a way to set this up?

var app = express();

// all environments
app.set('port', process.env.PORT || 3000);
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.json());
app.use(express.urlencoded());
app.use(express.methodOverride());
app.use(app.router);

import stylus = require('stylus');
app.use(stylus.middleware(path.join(__dirname, 'public')));
app.use(express.static(path.join(__dirname, 'public')));

// development only
if ('development' == app.get('env')) {
    app.use(express.errorHandler());
}

app.get('/', routes.index);
app.get('/users', user.list);


http.createServer(app).listen(app.get('port'), function () {
    console.log('Express server listening on port ' + app.get('port'));
});

Answer 1

With Express 4 you can mount Routers (like miniature Express apps) on a base path, so you could set up a Router to handle all /user/* paths, one for /article/* paths, etc.:

app.use('/user', routers.user);
app.use('/article', routers.article);
// ...

You can then put the logic for these routers in separate files and just require and use them in wherever it makes sense (eg in your main app.js or even inside another router).

See this Express 4 docs for more details.