nodejs如何使用mongo数据库

首先，使用express创建一个基础网站，

npm install express

生成网站

$ express  myapp

create : myapp
create : myapp/package.json
create : myapp/app.js
create : myapp/public
create : myapp/public/javascripts
create : myapp/public/images
create : myapp/public/stylesheets
create : myapp/public/stylesheets/style.css
create : myapp/routes
create : myapp/routes/index.js
create : myapp/views
create : myapp/views/layout.jade
create : myapp/views/index.jade

install dependencies:
    $ cd myapp && npm install

run the app:
    $ node app

安装mongoose模块

npm install  mongoose

mongoose官网 http://mongoosejs.com/

在express的routes/index.js文件里，加入如下代码

exports.index = function(req, res){
  var mongoose = require('mongoose'); 

  var db = mongoose.createConnection('localhost', 'test');

  var schema = mongoose.Schema({ name: 'string' }); 
  var User = db.model('User', schema);

  var kitty = new User({ name: 'Zildjian' }); 
  kitty.save(function (err) {
    if (err) // ...
    res.end('meow');
  }); 


  User.find({'name':'Zildjian'},function(err,docs){  
    res.render('index', { title: docs});
  }); 
}; 

打开网页地址 http://localhost:3000/ 就能看到刚才新增的数据库记录输出了。