使用express应用生成器搭建项目
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使用一下命令安装生成器
$ npm install express-generator -g -
使用-h 查看命令选项
$ express -h Usage: express [options][dir] Options: -h, --help output usage information --version output the version number -e, --ejs add ejs engine support --hbs add handlebars engine support --pug add pug engine support -H, --hogan add hogan.js engine support -v, --view <engine> add view <engine> support (ejs|hbs|hjs|jade|pug|twig| vash) (defaults to jade) -c, --css <engine> add stylesheet <engine> support (less|stylus|compass| sass) (defaults to plain css) --git add .gitignore -f, --force force on non-empty directory -
创建名为node-sticky的express应用程序
$ express --pug --css=less node-sticky//我默认安装了less和pug模板引擎 -
安装依赖
$ cd node-sticky $ npm install -
启动应用程序
$ npm start > node-sticky@0.0.0 start /node-sticky > node ./bin/www 在浏览器输入localhost:3000 就可以看到欢迎画面了。
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目前的目录结构
├── app.js ├── bin │ └── www ├── package.json ├── public │ ├── images │ ├── javascripts │ └── stylesheets │ └── style.css ├── routes │ ├── index.js │ └── users.js └── views ├── error.pug ├── index.pug └── layout.pug
添加src目录，配置相应的webpack
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我们把前端的源码放在src目录下，使用webpack打包到node的public目录下面。添加之后的目录结构为：
├── app.js ├── bin | └── www ├── package-lock.json ├── package.json ├── public | ├── images | ├── javascripts | └── stylesheets | └── style.less ├── routes | ├── index.js | └── users.js ├── src //前端源码目录 | ├── js | | ├── app //webpack入口目录 | | | └── index.js | | ├── lib //一些工具目录 | | |—— module //js模块 | ├── less //less目录 | └── webpack.config.js //webpack配置文件 └── views ├── error.pug ├── index.pug └── layout.pug我使用的mac的tree命令生成目录树，具体命令：tree -l 4 --ignore=node_modules，把依赖目录忽略。
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配置webpack
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配置之前需要先安装一下webpack依赖
$ npm install webpack --save-dev -
然后简单配置webpack入口文件和出口文件。
let webpack = require('webpack') let path = require('path') module.exports = { entry: path.join(__dirname,'/js/app/index.js'), output: { path: path.join(__dirname,'../public'), filename: 'js/index.js' } } -
在终端运行webpack
$ cd src $ webpack Hash: 80c9ec3163fbc2ca01c3
Version: webpack 4.3.0
Time: 265ms
Built at: 2018-3-29 05:21:58
Asset Size Chunks Chunk Names
js/index.js 676 bytes 0 [emitted] main
Entrypoint main = js/index.js
[0] ./js/module/b.js 36 bytes {0} [built]
[1] ./js/module/a.js 36 bytes {0} [built]
[2] ./js/app/index.js 65 bytes {0} [built]WARNING in configuration The 'mode' option has not been set. Set 'mode' option to 'development' or 'production' to enable defaults for this environment. ~~~-
最后给一个警告，要加上webpack运行的环境，在后面加上就好了
$ webpack --mode development
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配置package.json的script脚本
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但是我们不能一直在src里面执行，我们要在根目录下执行，所有要使用package.json里面的srcipt字段脚本命令。需要配置webpack的--config指定脚本文件。
//package.json { "name": "node-sticky", "version": "0.0.0", "private": true, "scripts": { "start": "node ./bin/www", "webpack": "webpack --config=src/webpack.config.js --mode=development" }, "dependencies": { "cookie-parser": "~1.4.3", "debug": "~2.6.9", "express": "~4.16.0", "http-errors": "~1.6.2", "less-middleware": "~2.2.1", "morgan": "~1.9.0", "pug": "2.0.0-beta11", "webpack": "^4.3.0" } } -
然后进入个目录执行npm run webpack就会发现报错了。
$ cd .. $ npm run webpack > node-sticky@0.0.0 webpack /Users/lanbo/projects/node-sticky > webpack --config=src/webpack.config.js The CLI moved into a separate package: webpack-cli. Please install 'webpack-cli' in addition to webpack itself to use the CLI. -> When using npm: npm install webpack-cli -D -> When using yarn: yarn add webpack-cli -D npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! node-sticky@0.0.0 webpack: `webpack --config=src/webpack.config.js` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the node-sticky@0.0.0 webpack script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in: npm ERR! /Users/lanbo/.npm/_logs/2018-03-28T21_33_04_687Z-debug.log -
根据报错内容需要安装webpack-cli，那就照着做吧。
$ npm install webpack-cli --save-dev -
然后再次执行，就发现成功啦，哈哈哈~~然后问题来了，不能每次都要自己手动去webpack，有一个工具能自动去打包就好了，正好有这个工具--onchange.
$ npm install onchange --save-dev -
配置script脚本
$ "watch": "onchange 'src/**/*.js' 'src/**/*.less' -- npm run webpack" -
在另外开一个终端，启动脚本就不去管他了，js和less文件有变动会自动去打包。
$ npm run watch
一点点记录，一步步成长，加油~~~~
