Node连接Mongodb

var express =require('express');

var router =express.Router();

var mongoose =require("mongoose");

mongoose.connect("mongodb://localhost/db");

var Model = mongoose.model('collection_name',{name:String});

router.get('/', function(req, res, next) {

var insertModel =new Model({name:'小超'}); 

insertModel.save(function (err) {

if(err){

console.log(err);     

}else{

console.log("insert success");     

}

})

res.send("666");});

module.exports = router;