Using Nodejs for Web development

Here, we are ready to implement a microblog system from scratch with Nodejs. Features include routing control, page templates, database access, user registration, login, user sessions, and more.

The Express framework, MVC design pattern, Ejs template engine, and MongoDB database operations will be introduced.

Preparatory work

Using the HTTP module, express framework,

Nodejs's abstraction is so bad that it exposes the wrong details to the developer. You can use it to do anything that the HTTP server can do, not just to make a website, or even implement an HTTP proxy server.

Express is the Web development framework.

Realize:

Provides a higher-level interface for HTTP modules,

Routing control,

Template parsing support,

Dynamic View,

User sessions,

CSRF Protection,

Static file service,

Error controller,

Access logs,

Cache

Plugin support.

Most features are just encapsulation of common operations in the HTTP protocol, and more features require plug-ins or integration with other modules.

Rapid development

Install Express

Under the project directory

NPM install-g Express-generator

Express--help

Establish engineering

Express-t Ejs microblog because the new version has no-t command

1. How to install the Ejs template engine in a project

Use the following command to establish the basic structure of your Web site in the Nodejs guide:

Express-t Ejs Microblog

Continue running after running this command

CD microblog && npm Install (dependency properties of the installation project),

found that the installed template engine is jade, not ejs. The reason is that the current version has no-t this command, instead

EXPRESS-E microblog

After running this command, continue running CD microblog && NPM install,ejs template engine is installed

But express3 above version of the layout by default to cancel, so now in the Views folder does not generate Layout.ejs.

2. When Ejs is installed, how to use the Ejs layout template

installing Express-partials

Switch to the project directory in CMD, run

(1) npm install express-partials or

(2) package.json Add in the dependencies inside "express-partials": "*" . Then run under the project directory npm install .

(3)然后在app.jsInside quoteexpress-partials，引用方法：

1. path = require(‘path‘) after that, add a referencevar partials = require(‘express-partials‘);

2. In the app.set(‘view engine‘, ‘ejs‘)后， addapp.use(partials());

3. Growth port,

App.listen (8100,function () {
Console.log ("Server start!");
});

http://cnodejs.org/topic/515b009a6d38277306192e4e

Start the server

Structure of the project

Routing control

Template engine

Create a Weibo website

User Registration and Login

Post Weibo