nodejs 使用mongoose 操作mongodb

nodejs操作mongodb可以使用mongoose：

Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment.

安装mongoose：

npm install mongoose

///获取mongodb连接

var conn = mongoose.connect('mongodb://localhost/mytest');

var Schema = mongoose.Schema

, ObjectId = Schema.ObjectId;

var Person = new Schema({

title : { type: String }

, age : { type: Number, min: 5, max: 20 }

, meta : {

likes : [String]

, birth : { type: Date }

}

});

var p = mongoose.model('ModelName22', Person);

var Blog = mongoose.model("ModelName22");

//保存新纪录

var blog1 = new Blog();

blog1.id22 = 4;

blog1.title="ully";

blog1.save(function(err){

if (err) {

console.log('save failed');

}

console.log('save success');

});

///查找记录

Blog.find({_id:'4f8678891256c4b819000002'},function(err,docs){

console.log(docs);

});

//修改记录

var conditions = { name: 'borne' }

, update = { $set: { title: 'xxxxb' }}

, options = {};

Blog.update({_id:'4f866f35311977a81b000001'},update,options,function(err,docs){

console.log(docs+","+err);

});

//删除记录

Blog.remove({_id:'4f8678891256c4b819000002'},function(err,docs){

console.log(docs);

});