node鏈接mongoose並對數據庫進行操做

初始化項目：cnpm init -y

局部安裝mongoose：cnpm install mongoose -S

打開服務：mongod --dbpath d:\data\db

const mongoose = require("mongoose");

const data_url = "mongodb://127.0.0.1:27017/bk1910";//定義數據庫地址

mongoose.connect(data_url,(err,client)=>{

if(err){

console.log("鏈接失敗")

}else{

console.log("鏈接成功")

}

})

//鏈接表並定義字段

const Users = mongoose.model("user",{

name:String,

age:String,

sex:String

})

const users = new Users({

name:"胡歌",

age:26,

sex:"男"

})

//添加數據

users.save().then((result)=>{

console.log(result)

})

//刪除數據

Users.remove({"name":"胡歌"}).then((result)=>{

console.log(result)

})

//修改數據

Users.update({「name」:"胡歌"},{$set:{"name":"江疏影"}})then((result)=>{

console.log(result)

})

//查詢數據

Users.find().then((result)=>{

console.log(result)

})