Express4+mongodb Super Simple Getting Started example

Before you start, make sure that MongoDB is working, installation Tutorial: Installation and configuration of MongoDB under Windows, install your own configuration. Enter the following text:

First step: command line Create a database, table, and insert a piece of data

The command is as follows:

Create a database Use blog//create a table and insert a data Db.users.insert ({"Name": "Zhangangs", "Emali": "[email protected]", "Age": "26"});// View Data Db.users.find ();

　

Note: MongoDB automatically adds s when creating collections automatically, when manually created, it is recommended to add, (Bo Master just climbed up from this pit ~ ~) using the Mongoose process encountered doubts (has been resolved)

Step Two: Install Express+mongoose (default you have installed Nodejs)

Global installation EXPRESSNPM install express-g//installed Express Global generator, you can automatically generate project files NPM install Express-generator-g

In the current working directory, a project called blog is generated, and the Ejs template is used.

The default is the Jade template,-E is the use of Ejs template Express-e Blog

Then install all dependencies:

Go to project folder CD blog//Install all dependent NPM Install

Startup Project under Windows Platform,

The official method, because it is debug mode, did not delve into set Debug=blog $ npm start//directly start NPM start

Then open the http://localhost:3000/in the viewer to see the application, here, Express is the installation completed.

Installing the Mongoose Module

Enter the current project root directory and enter:

Install Mongoose,   --save add Mongoose module to project dependent NPM install Mongoose--save

The installation complete Package.json file is as follows:

Mongoose Module installation is complete!

Step three: Express Operation MongoDB

1, modify the Route/index.js

var express = require (' Express '); var router = Express. Router ();//mongodbvar Mongoose = require (' Mongoose '); Mongoose. Promise = Global. Promise;        var conn = mongoose.connect (' Mongodb://127.0.0.1:27017/blog '); var User = new Mongoose. Schema ({    name:string,    email:string,    age:string}), var mymodel = Conn.model (' user ', user);/* GET index Listing. */router.get ('/', function (req, res, next) {    Mymodel.findone ({name: "Zhangangs"}, function (err, user) {        Console.log (user);        Res.render (' index ', {title: ' Express ', User:user});})    ; Module.exports = router;

Modify Wiew/index.ejs

<! DOCTYPE html>
Restart the server, refresh the page, the effect is as follows:
Complete, (>_<)
The pro-test is available. Attention:
1. The third step connects the database with the new version:
var conn = Mongoose.connection.openUri (' Mongodb://127.0.0.1:27017/blog ');
2. When connecting to the database, you need to ensure that MongoDB is open
Reprint: https://www.cnblogs.com/zhangans/p/6242898.html
Express4+mongodb Super Simple Getting Started example