如今ES6在前端開發中已經很是普及了,因此前端轉向node開發還能夠繼續保持ES6寫法,如今node對ES6語法友好度愈來愈高,下面咱們開始搭建一個支持ES6寫法的node項目。同時使用nodemon配置項目源碼修改時自動重啓服務。前端
首先要初始化一個項目node
npm init 或 npm init -y
先安裝一個express(根據本身的需求選擇web服務框架)mysql
npm install express --save
安裝babel工具web
npm install babel-cli --save-dev npm install babel-plugin-transform-runtime --save-dev npm install babel-preset-env --save-dev npm install babel-preset-es2015 --save-dev npm install babel-preset-latest --save-dev npm install babel-register --save-dev
安裝@babel/runtimesql
npm install @babel/runtime --save
安裝 nodemon NODE項目代碼修改時咱們須要讓項目自動編譯更新express
npm install nodemon --save-dev
安裝 「rimraf」 項目文件打包時須要刪除上次打包的文件目錄npm
npm install rimraf --save-dev
cross-env能跨平臺地設置及使用環境變量json
npm install cross-env --save
下面咱們配置一下package.json文件,在scripts中添加下面的代碼api
"build": "rimraf dist/ && babel ./ --out-dir dist/ --ignore ./node_modules,./.babelrc,./package.json,./npm-debug.log --copy-files", "start": "cross-env NODE_ENV=development nodemon --harmony index-api.js"
而後新建一個文件.babelrc,將下面的代碼寫進入服務器
{ "presets": ["es2015"], "plugins": ["transform-runtime"] }
到此基本的配置已經完成了,下面創建一個服務器文件 app.js
import express from 'express' const app = express() app.listen(3000, function() { console.log('服務器啓動成功!') })
此時若是急用node命令啓動app.js會出現錯誤,由於import模塊引入命令node不認,因此要用一箇中間頁面作一下過渡
新建一個index.js
require('babel-register') ({ presets: [ 'env' ] }) require('./app.js')
此時用npm start index.js啓動項目(用node命令直接啓動index.js文件也不會報錯了)
下面我把我項目中的配置貼出來僅供你們參考
package.json文件
{ "name": "node-api", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1", "build": "rimraf dist/ && babel ./ --out-dir dist/ --ignore ./node_modules,./.babelrc,./package.json,./npm-debug.log --copy-files", "start": "cross-env NODE_ENV=development nodemon --harmony index.js" }, "keywords": [], "author": "", "license": "ISC", "dependencies": { "@babel/runtime": "^7.4.2", "cookie-parser": "^1.4.4", "cross-env": "^5.2.0", "express": "^4.16.4", "express-session": "^1.15.6", "mysql": "^2.16.0", "node-uuid": "^1.4.8" }, "devDependencies": { "babel-cli": "^6.26.0", "babel-plugin-transform-runtime": "^6.23.0", "babel-preset-env": "^1.7.0", "babel-preset-es2015": "^6.24.1", "babel-preset-latest": "^6.24.1", "babel-register": "^6.26.0", "nodemon": "^1.18.10", "rimraf": "^2.6.3" } }
.babelrc
{ "presets": ["es2015"], "plugins": ["transform-runtime"] }
app.js
import express from 'express' import router from './router/index.js' import bodyParser from 'body-parser' import cookieParser from 'cookie-parser' import session from 'express-session'; const app = express(); app.set('port', process.env.PORT || 200); // 設定監聽端口 app.all('*', (req, res, next) => { const { origin, Origin, referer, Referer } = req.headers; const allowOrigin = origin || Origin || referer || Referer || '*'; res.header("Access-Control-Allow-Origin", allowOrigin); res.header("Access-Control-Allow-Headers", "Content-Type, Authorization, X-Requested-With"); res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS"); res.header("Access-Control-Allow-Credentials", true); //能夠帶cookies res.header("X-Powered-By", 'Express'); if (req.session) { console.log('進入') } if (req.method == 'OPTIONS') { res.sendStatus(200); } else { next(); } }); app.use(express.static('./view')); app.use(bodyParser.json({limit: '1mb'})); // 這裏指定參數使用 json 格式 app.use(cookieParser()); // 掛載cookie app.set('trust proxy', 1) app.use(session({ secret: 'keyboardcat', name: 'token', //這裏的name值得是cookie的name,默認cookie的name是:connect.sid rolling: true, cookie: {maxAge: 60 * 60 * 1000 , httpOnly:true}, //設置maxAge是80000ms,即80s後session和相應的cookie失效過時 resave: true, saveUninitialized: false })); router(app); app.listen(app.get('port'), () => { console.log(`服務端口:${app.get('port')}`) })
index.js
require('babel-register') ({ presets: [ 'env' ] }) require('./app.js')
到此就結束了,這是我項目中最基本的配置