MongoDB

https://www.npmjs.com

1. mongod --dbpath=/data --port 27017 可以修改端口号（不提倡修改）

2. var MogoClient = require('mongodb').MongoClient
   .asport =require('asmert');

3. 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

4. mkdir zhouyi

5. cd zhouyi

6. npm install mongodb 安装模板

7. npm install mongoose 安装 原生态

启动数据库

1. cd mongodb
2. ./mongod --dbpath=../liu_db

3. var mongoose = require("mongoose");

4. var db =
   mongoose.createConnection('mongodb://192.168.170.131:27017/test'); test数据库

5. console.log(db);

添加

1. var mongoose = require('mongoose');

2. var db = mongoose.createConnection('mongodb://192.168.84.128:27017/test');

3. var monSchema = new mongoose.Schema({

4. name:{type:String,default:'liu'},

5. age:{type:Number},

6. sex:{type:String},
   });

7. var monModel =db.model('user',monSchema);

8. var content = {name: "yihao",age:18,sex:'男'};

9. var monInsert = new monModel(content);

10. monInsert.save(function(err)){

11. if(err){

12. console.log(err);

13. }

14. else{

15. console.log('成功');

16. }

17. db.close(); 关闭数据库

18. }

19. show dbs;

20. use test

21. show collections;

22. db.users.find().toArray();

查询

1. var mongoose = requier ('mongoose');

2. var db = mongoose.createConnetion('mongodb://192.168.170.131:27017/test');

3. var monSchema = new mongoose.Schtema({

4. name:{type:String,default:'liu'},

5. age:{type:Number},

6. sex:{type:String}

7. });

8. var monModer = db.model('user',monSchema);

9. var content ={}; //显示什么

10. var field ={name:1,age：2，sex:1}; //要显示出来的内容

11. monModel.find(content,field,function(err,result){

12. if(err){

13. console.log(err);

14. }

15. else{

16. cosole.log(result);
    }

17. db.close();
    });

修改 更新

1. var mongose = require('mongoose');
2. var db = mongoose.createConnectio('mongodb://192.168.170.131:27017/test');
3. ar monSchema = new mongoose.Schema({
   1. name:{type:String,default:'liu'},
   2. age:{type:Number},
   3. sex:{type:String}

});

4. var monModel = db.model('user',monSchema);

5. var tiaojian ={name:"liu"};

6. var gengxindata={$set:{name:'liuy'}};

7. monModel.update(tiaojian,gengxindata ,function(err,result){

   1. if(err){
   2. console.log(err);
      }
   3. else{
   4. console.log(result);
      }
      1 db.close(); //结束
      })

删除

1. var mongoose = require('mongoose');

2. var db= mongoose.createConnection('mongodb://192.168.170.131:27017/test');

3. var monSchema = new mongoose.Schema({

   1. name:{type:String,default:'liu'},
   2. age:{type:Number},
   3. sex:{type:String},
      });

4. var monModel = db.model('user',monSchema);

5. var shanchu = {name:"liuy"}

6. monModel.remove(shanchu,function(arr,result){

7. for(err){

8. console.log(err);
   }

9. else{

10. console.log(result);
    }

11. db.close();
    })