安装使用Mongoose配合Node.js操作MongoDB的基础教程

express TestMongoDB
cd TestMongoDB
npm install

npm install mongoose --save

var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/accounts');
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function() {
 console.log('mongoose opened!');
 var userSchema = new mongoose.Schema({
   name:{type: String, unique: true}, 
   password:String
  }, 
  {collection: "accounts"}
  );
 var User = mongoose.model('accounts', userSchema);

 User.findOne({name:"WangEr"}, function(err, doc){
  if(err) console.log(err);
  else console.log(doc.name + ", password - " + doc.password);
 });

 var lisi = new User({name:"LiSi", password:"123456"});
 lisi.save(function(err, doc){
  if(err)console.log(err);
  else console.log(doc.name + ' saved');
 }); 
});

connect(uri, options, [callback])

var obj = new Movie();
obj.title = '标题一';
obj.content = '内容';
obj.save(function(err) {
  
});

Movie.remove({
  _id:id
},function (err) {
  
})

Movie.update({
  _id:id
},json,{},function (err) {
  
})

Movie.findOne({
  _id: id
}, function(err, obj) {
 
});
Movie.find({}).sort({_id: -1}).limit(3).exec(function(err, obj) {
 
})