Operating MongoDB with mongoose

In mongoose, you can use the save method to insert a new document into the collection.
Through instantiation, all attributes of a model are defined to the mongoose.Schema () object. Register a model in mongoose through mongoose.model () method.

//引入mongoose模块
const mongoose=require("mongoose");
//定义mongodb地址：user表数据库名
const url='mongodb:localhost/user';
//连接mongodb
mongoose.connect(url,function(err){
	if(err){
		console.log(连接失败！);
		return;
	}
})；
//定义Schema
const userSchema=new mongoose.Schema({
	//字段名：字段类型
	id:{type:Number},
	name:{type:String},
	sex:{type:String}
});
//users是集合名也是表名
mongoose.model('users',userSchema);
const users=mongoose.model('users');
//如果想要插入多条数据就运行多次
var art=new users({
	id:1,
	name:'张三',
	sex:'男'
});
//将文档插入集合中
art.save(function(err){
	if(err){
		console.log("插入失败");
	}
});