Express application generatorExpress应用程序生成器
Use the application generator tool, 使用应用程序生成器工具express-generator, to quickly create an application skeleton.express-generator快速创建应用程序骨架。
You can run the application generator with the 您可以使用npx command (available in Node.js 8.2.0).npx命令（在Node.js 8.2.0中可用）运行应用程序生成器。
$ npx express-generator
For earlier Node versions, install the application generator as a global npm package and then launch it:对于早期的Node版本，将应用程序生成器安装为全局npm包，然后启动它：
$ npm install -g express-generator
$ express
Display the command options with the 使用-h option:-h选项显示命令选项：
$ 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
--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
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:例如，下面创建了一个名为myapp的Express应用程序。应用程序将在当前工作目录中名为myapp的文件夹中创建，视图引擎将设置为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
Then install dependencies:然后安装依赖项：
$ cd myapp
$ npm install
On MacOS or Linux, run the app with this command:在MacOS或Linux上，使用以下命令运行应用程序：
$ DEBUG=myapp:* npm start
On Windows Command Prompt, use this command:在Windows命令提示符上，使用以下命令：
> set DEBUG=myapp:* & npm start
On Windows PowerShell, use this command:在Windows PowerShell上，使用以下命令：
PS> $env:DEBUG='myapp:*'; npm start
Then, load 然后，在浏览器中加载http://localhost:3000/ in your browser to access the app.http://localhost:3000/以访问应用程序。
The generated app has the following directory structure:生成的应用程序具有以下目录结构：
.
├── app.js
├── bin
│ └── www
├── package.json
├── public
│ ├── images
│ ├── javascripts
│ └── stylesheets
│ └── style.css
├── routes
│ ├── index.js
│ └── users.js
└── views
├── error.pug
├── index.pug
└── layout.pug
7 directories, 9 files
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.生成器创建的应用程序结构只是构建Express应用程序的许多方法之一。请随意使用此结构或对其进行修改以最适合您的需求。