From ae5a7325841f0cce6f703423757c3333193a9a43 Mon Sep 17 00:00:00 2001 From: huangwenming <1205597228@qq.com> Date: Mon, 16 Dec 2019 14:31:48 +0800 Subject: [PATCH] feat(koa2): add the koa demos to compare koa2 and express --- html-relevant/modules/fallback.js | 4 + html-relevant/modules/jsModule.html | 10 + html-relevant/modules/lib.js | 0 html-relevant/modules/main.js | 4 + node-study/koa2/README.md | 11 + node-study/koa2/examples/basic-use/app.js | 57 +++ node-study/koa2/examples/basic-use/express.js | 43 ++ .../koa2/examples/basic-use/statics/README.md | 11 + node-study/koa2/package-lock.json | 436 ++++++++++++++++++ node-study/koa2/package.json | 16 + 10 files changed, 592 insertions(+) create mode 100644 html-relevant/modules/fallback.js create mode 100644 html-relevant/modules/jsModule.html create mode 100644 html-relevant/modules/lib.js create mode 100644 html-relevant/modules/main.js create mode 100644 node-study/koa2/README.md create mode 100644 node-study/koa2/examples/basic-use/app.js create mode 100644 node-study/koa2/examples/basic-use/express.js create mode 100644 node-study/koa2/examples/basic-use/statics/README.md create mode 100644 node-study/koa2/package-lock.json create mode 100644 node-study/koa2/package.json diff --git a/html-relevant/modules/fallback.js b/html-relevant/modules/fallback.js new file mode 100644 index 0000000..a57f70d --- /dev/null +++ b/html-relevant/modules/fallback.js @@ -0,0 +1,4 @@ +export const repeat = (string) => `${string} ${string}`; +export function shout(string) { + return `${string.toUpperCase()}!`; +} diff --git a/html-relevant/modules/jsModule.html b/html-relevant/modules/jsModule.html new file mode 100644 index 0000000..4cc2169 --- /dev/null +++ b/html-relevant/modules/jsModule.html @@ -0,0 +1,10 @@ + + + + + $Title$ + + +$END$ + + diff --git a/html-relevant/modules/lib.js b/html-relevant/modules/lib.js new file mode 100644 index 0000000..e69de29 diff --git a/html-relevant/modules/main.js b/html-relevant/modules/main.js new file mode 100644 index 0000000..a57f70d --- /dev/null +++ b/html-relevant/modules/main.js @@ -0,0 +1,4 @@ +export const repeat = (string) => `${string} ${string}`; +export function shout(string) { + return `${string.toUpperCase()}!`; +} diff --git a/node-study/koa2/README.md b/node-study/koa2/README.md new file mode 100644 index 0000000..53afc67 --- /dev/null +++ b/node-study/koa2/README.md @@ -0,0 +1,11 @@ +#Koa2 知识点 +> 新一代web服务框架，用于取代express + +## Features +1. 使用Promise配合async来实现异步； +2. 采用中间件架构； +3. 优雅的API封装； +4. 增强错误处理； +5. 轻量无捆绑； + + diff --git a/node-study/koa2/examples/basic-use/app.js b/node-study/koa2/examples/basic-use/app.js new file mode 100644 index 0000000..84f84f5 --- /dev/null +++ b/node-study/koa2/examples/basic-use/app.js @@ -0,0 +1,57 @@ +/** + * @file koa2 基础使用 + * @description 主要用于和express进行对比 + * @author hwm + */ +const Koa = require('koa'); +const KoaStatic = require('koa-static'); +const KoaRouter = require('koa-router'); + +const app = new Koa(); + +// 静态服务 +app.use(KoaStatic('./statics')); + +// 中间件 +app.use((context, next)=> { + context.body = { + msg: 'hello, i am koa2' + }; + next(); +}); + +// 日志 +app.use(async(context, next)=> { + const start = new Date().getTime(); + await next(); + const end = new Date().getTime(); + console.log(`the time consuming of the gethtml api :${end - start}ms`); +}); + +app.use((context, next)=> { + if (context.url === '/gethtml') { + context.type = 'text/html; charset=utf-8'; + context.body = `

${context.body.msg}

`; + } + next(); +}); + + +// 路由 +const router = new KoaRouter(); +router.get('/html', (context, next)=> { + context.type = 'text/html; charset=utf-8'; + context.body = `

${context.body.msg}

`; + next(); +}); +app.use(router.routes()); + + +app.listen(3000, err => { + if (!err) { + console.log('server is listenning on port 3000'); + } + else { + console.log('server fails to start on port 3000'); + } +}); diff --git a/node-study/koa2/examples/basic-use/express.js b/node-study/koa2/examples/basic-use/express.js new file mode 100644 index 0000000..9cd37ed --- /dev/null +++ b/node-study/koa2/examples/basic-use/express.js @@ -0,0 +1,43 @@ +/** + * @file express 基础使用 + * @description 主要用于和koa进行对比 + * @author hwm + */ +const express = require('express'); +const router = express.Router(); + +const app = new express(); + +// 静态服务 +app.use(express.static('./statics')); + +// 路由 +app.get('/gethtml', (req, res)=> { + res.type('html'); + res.send(`

hello, i am express

`); +}); + +// invoked for any requests passed to this router +router.use(function (req, res, next) { + // .. some logic here .. like any other middleware + next() +}); + +// will handle any request that ends in /events +// depends on where the router is "use()'d" +router.get('/events', function (req, res, next) { + // .. +}); + +// only requests to /calendar/* will be sent to our "router" +app.use('/calendar', router); + + +app.listen(3001, err => { + if (!err) { + console.log('server is listenning on port 3001'); + } + else { + console.log('server fails to start on port 3001'); + } +}); diff --git a/node-study/koa2/examples/basic-use/statics/README.md b/node-study/koa2/examples/basic-use/statics/README.md new file mode 100644 index 0000000..53afc67 --- /dev/null +++ b/node-study/koa2/examples/basic-use/statics/README.md @@ -0,0 +1,11 @@ +#Koa2 知识点 +> 新一代web服务框架，用于取代express + +## Features +1. 使用Promise配合async来实现异步； +2. 采用中间件架构； +3. 优雅的API封装； +4. 增强错误处理； +5. 轻量无捆绑； + + diff --git a/node-study/koa2/package-lock.json b/node-study/koa2/package-lock.json new file mode 100644 index 0000000..62db7ea --- /dev/null +++ b/node-study/koa2/package-lock.json @@ -0,0 +1,436 @@ +{ + "name": "koa2", + "version": "1.0.0", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "accepts": { + "version": "1.3.7", + "resolved": "https://registry.npm.taobao.org/accepts/download/accepts-1.3.7.tgz", + "integrity": "sha1-UxvHJlF6OytB+FACHGzBXqq1B80=", + "requires": { + "mime-types": "2.1.25", + "negotiator": "0.6.2" + } + }, + "any-promise": { + "version": "1.3.0", + "resolved": "https://registry.npm.taobao.org/any-promise/download/any-promise-1.3.0.tgz", + "integrity": "sha1-q8av7tzqUugJzcA3au0845Y10X8=" + }, + "cache-content-type": { + "version": "1.0.1", + "resolved": "https://registry.npm.taobao.org/cache-content-type/download/cache-content-type-1.0.1.tgz", + "integrity": "sha1-A1zeKwjuISn0qDFeqPAKANuhRTw=", + "requires": { + "mime-types": "2.1.25", + "ylru": "1.2.1" + 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