mongoose使用

1. 下载mongoose模块

cmd后台输入:npm install mongoose --save

2. mongoose使用

//引入mongoose模块
var mongoose = require("mongoose")
//连接mongo数据库
mongoose.connect("mongodb://localhost:27017/project")

var db = mongoose.connection
//连接数据库成功后给后台发送连接信息
db.on("open",(err)=>{
    if(err) throw err
    console.log("connect success")
})
//定义数据结构
var userSchema = new mongoose.Schema({
    username:String,
    id:String,
    password:String,
    age:Number
},{
    versionKey:false
})

var newsSchema = new mongoose.Schema({
    id:String,
    title:String,
    content:String
},{
    versionKey:false
})
//定义数据模型
var userModel = mongoose.model("user",userSchema,"userList")
var newsModel = mongoose.model("news",newsSchema,"newsList")

//导出
module.exports = {
    userModel:userModel,
    newsModel:newsModel
}