sinatra get params name
https://webapps-for-beginners.rubymonstas.org/sinatra/params.html
在文件末尾添加以下路由（请求处理程序）到您的程序：
<span class="n">get</span> <span class="s2">"/monstas/:name"</span> <span class="k">do</span> <span class="s2">"Hello </span><span class="si">#{</span><span class="n">params</span><span class="p">[</span><span class="s2">"name"</span><span class="p">]</span><span class="si">}</span><span class="s2">!"</span> <span class="k">end</span>重新启动您的 Sinatra 应用程序，然后将您的浏览器指向http://localhost:4567/monstas/monstas.