MongoDB
mongod --dbpath=/data --port 27017 可以修改端口号（不提倡修改）
var MogoClient = require('mongodb').MongoClient
.asport =require('asmert');mongoose
$ npm install mongoose 依赖于MongoDB
组件可以在任何一个项目中使可以使用，而插件就不能了mkdir zhouyi
cd zhouyi
npm install mongodb 安装模板
npm install mongoose 安装 原生态
启动数据库
- cd mongodb
- ./mongod --dbpath=../liu_db
var mongoose = require("mongoose");
var db =
mongoose.createConnection('mongodb://192.168.170.131:27017/test'); test数据库console.log(db);
添加
var mongoose = require('mongoose');
var db = mongoose.createConnection('mongodb://192.168.84.128:27017/test');
var monSchema = new mongoose.Schema({
name:{type:String,default:'liu'},
age:{type:Number},
sex:{type:String},
});var monModel =db.model('user',monSchema);
var content = {name: "yihao",age:18,sex:'男'};
var monInsert = new monModel(content);
monInsert.save(function(err)){
if(err){
console.log(err);
}
else{
console.log('成功');
}
db.close(); 关闭数据库
}
show dbs;
use test
show collections;
db.users.find().toArray();
查询
var mongoose = requier ('mongoose');
var db = mongoose.createConnetion('mongodb://192.168.170.131:27017/test');
var monSchema = new mongoose.Schtema({
name:{type:String,default:'liu'},
age:{type:Number},
sex:{type:String}
});
var monModer = db.model('user',monSchema);
var content ={}; //显示什么
var field ={name:1,age：2，sex:1}; //要显示出来的内容
monModel.find(content,field,function(err,result){
if(err){
console.log(err);
}
else{
cosole.log(result);
}db.close();
});
修改 更新
- var mongose = require('mongoose');
- var db = mongoose.createConnectio('mongodb://192.168.170.131:27017/test');
- ar monSchema = new mongoose.Schema({
- name:{type:String,default:'liu'},
- age:{type:Number},
- sex:{type:String}
});
var monModel = db.model('user',monSchema);
var tiaojian ={name:"liu"};
var gengxindata={$set:{name:'liuy'}};
-
monModel.update(tiaojian,gengxindata ,function(err,result){
- if(err){
- console.log(err);
} - else{
- console.log(result);
}
1 db.close(); //结束
})
删除
var mongoose = require('mongoose');
var db= mongoose.createConnection('mongodb://192.168.170.131:27017/test');
-
var monSchema = new mongoose.Schema({
- name:{type:String,default:'liu'},
- age:{type:Number},
- sex:{type:String},
});
var monModel = db.model('user',monSchema);
var shanchu = {name:"liuy"}
monModel.remove(shanchu,function(arr,result){
for(err){
console.log(err);
}else{
console.log(result);
}db.close();
})
