为什么express一启动就结束

express版本是4的

app.js var express = require('express'); var route = require('./route'); var app = express();

app.set('views', './views'); app.set('view engine', 'jade'); app.set('port', 8080);

route.initialize(app)

console.log('Listening on port 8080');

route.js module.exports.initialize = function(app) {

app.get("/", function(req, res) {
	res.send("hello world!");
});

};

新手入门 求指导