命令行Web服务器：http-server
http-server 是简单的零配置命令行 http 服务器。
提供的选项：
-pPort to use (defaults to 8080)
-aAddress to use (defaults to 0.0.0.0)
-dShow directory listings (defaults to 'True')
-iDisplay autoIndex (defaults to 'True')
-eor--extDefault file extension if none supplied (defaults to 'html')
-sor--silentSuppress log messages from output
--corsEnable CORS via theAccess-Control-Allow-Originheader
-oOpen browser window after staring the server
-cSet cache time (in seconds) for cache-control max-age header, e.g. -c10 for 10 seconds (defaults to '3600'). To disable caching, use -c-1.
-Por--proxyProxies all requests which can't be resolved locally to the given url. e.g.: -P http://someurl.com
-Sor--sslEnable https.
-Cor--certPath to ssl cert file (default: cert.pem).
-Kor--keyPath to ssl key file (default: key.pem).
-ror--robotsProvide a /robots.txt (whose content defaults to 'User-agent: *\nDisallow: /')
-hor--helpPrint this list and exit.