node. JS development----Create and connect database MongoDB

1.MongoDB Download Install E:\MongoDB

2. Where to create the database file E:\MongoDB\data\db

3. Start MongoDB Service

Library operations
New database: The first step: Use the new database name; second step: Do the library related operations; If you do not take the second step, the database will not be created
View database: Show DBS;
New table: Db.createcollection (' new table name to be created ');
View current database table below: Show collections;
Deletes the current database specified table: DB. Table name. Drop ();
Delete Current database: Db.dropdatabase ();

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Write a simple demo below.

1.express Creating E:\test Projects

Don't point this

2. Create a database

E:\MongoDB\bin Start Mongo.exe

Input

Use text \ Create a database called text
Db.createcollection ("users") \ Create a collection
Db.users.insert ({"Name": "admin", "Password": "111"}) \ adds a document to the Users collection.
Db.users.find () \ Query the document you added

3. Project Connection Database

Create a folder under the project root directory database, and then create a db.js E:\test \ Database\db.js

[HTML] View plain copy

var mongoose = require (' Mongoose ');

var db = mongoose.connect (' Mongodb://localhost/text ');//; Connect to database

var Schema = Mongoose.   Schema; Create a model

var userschema = new Schema ({

Name:string,

Password:string

}); A new model has been defined, but this pattern has not been associated with the Users collection

Exports.user = Db.model (' users ', userschema);//associated with the Users collection

4.views Folder CREATE View file

5. Control of routing
Index.js in the routes file

6. Start the node server

View in Http://localhost:3000/

Demo File: Https://github.com/MMMsCheng/nodedemoLogin

node. JS development----Create and connect database MongoDB