The difference between egg and express, koa
All three are node.js web frameworks, but:
- Express is suitable for personal projects, and its flexibility is too high;
- egg is an enterprise-level framework based on koa encapsulation. It implements
约定优于配置application development according to a set of unified agreements, reduces development and learning costs, and unifies code structure so that developers can focus more on business development; - Koa is built by the original team of express. Compared with express, it is smaller, more expressive, and more robust. The main differences between koa and express are:
- The asynchronous programming model is different, express uses promise, koa uses async/await
- Middleware is handled differently, koa adopts the onion ring model
- Context: Unlike Express, which only has two objects, Request and Response, Koa adds a Context object as the context object for this request
Common template engines:
- Java jsp
- php-smart
- node nunjucks
jwt
Reference link: JWT (jsonwebtoken)
body-parse
body-parser is a very commonly used express middleware, which is used for post请求parsing 请求体. It is very simple to use. In egg, a middleware like koa-bodyparser is built in.
Reference link: egg official website reading
project link: https://www.yuque.com/lipengzhou/eggjs