Express 应用生成器

¥Express application generator

使用应用生成器工具 express-generator 快速创建应用骨架。

¥Use the application generator tool, express-generator, to quickly create an application skeleton.

你可以使用 npx 命令(在 Node.js 8.2.0 中可用)运行应用生成器。

¥You can run the application generator with the npx command (available in Node.js 8.2.0).

$ npx express-generator

对于较早的 Node 版本,将应用生成器安装为全局 npm 包,然后启动它:

¥For earlier Node versions, install the application generator as a global npm package and then launch it:

$ npm install -g express-generator
$ express

使用 -h 选项显示命令选项:

¥Display the command options with the -h option:

$ 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
        --no-view       generate without view engine
    -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

例如,以下创建一个名为 myapp 的 Express 应用。该应用将在当前工作目录中名为 myapp 的文件夹中创建,并且视图引擎将设置为 Pug

¥For example, the following creates an Express app named myapp. The app will be created in a folder named myapp in the current working directory and the view engine will be set to Pug:

$ express --view=pug myapp

   create : myapp
   create : myapp/package.json
   create : myapp/app.js
   create : myapp/public
   create : myapp/public/javascripts
   create : myapp/public/images
   create : myapp/routes
   create : myapp/routes/index.js
   create : myapp/routes/users.js
   create : myapp/public/stylesheets
   create : myapp/public/stylesheets/style.css
   create : myapp/views
   create : myapp/views/index.pug
   create : myapp/views/layout.pug
   create : myapp/views/error.pug
   create : myapp/bin
   create : myapp/bin/www

然后安装依赖:

¥Then install dependencies:

$ cd myapp
$ npm install

在 MacOS 或 Linux 上,使用以下命令运行应用:

¥On MacOS or Linux, run the app with this command:

$ DEBUG=myapp:* npm start

在 Windows 命令提示符上,使用以下命令:

¥On Windows Command Prompt, use this command:

> set DEBUG=myapp:* & npm start

在 Windows PowerShell 上,使用以下命令:

¥On Windows PowerShell, use this command:

PS> $env:DEBUG='myapp:*'; npm start

然后,在你的浏览器中加载 http://localhost:3000/ 以访问该应用。

¥Then, load http://localhost:3000/ in your browser to access the app.

生成的应用具有以下目录结构:

¥The generated app has the following directory structure:

.
├── app.js
├── bin
│   └── www
├── package.json
├── public
│   ├── images
│   ├── javascripts
│   └── stylesheets
│       └── style.css
├── routes
│   ├── index.js
│   └── users.js
└── views
    ├── error.pug
    ├── index.pug
    └── layout.pug

7 directories, 9 files

生成器创建的应用结构只是构建 Express 应用的多种方法之一。请随意使用此结构或对其进行修改以最适合你的需求。

¥The app structure created by the generator is just one of many ways to structure Express apps. Feel free to use this structure or modify it to best suit your needs.