Spring Boot CLIを用いてGroovyアプリケーションを実行

Question

SPRING CLIを用いてgroovyのWebアプリケーションを実行したいのですが、spring runコマンドを打つと以下のエラーが発生してしまいます。
何が原因でしょうか？
（環境はmac）

「やったこと」
・SpringCLIインストール
・.bash_profileに、Sprign Boot CLIのPathを追加
・Desktop直下にapp.groovyを作成

「コンソール実行結果」

(base) mba:Desktop UserName$ spring run app.groovy
/Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/configuration.rb:46:in `find_project_root': Spring was unable to locate the root of your project. There was no Gemfile present in the current directory (/Users/UserName/Desktop) or any of the parent directories. (Spring::UnknownProject)
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/configuration.rb:48:in `find_project_root'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/configuration.rb:48:in `find_project_root'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/configuration.rb:48:in `find_project_root'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/configuration.rb:37:in `project_root_path'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/env.rb:28:in `project_root'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/env.rb:45:in `application_id'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/env.rb:49:in `socket_path'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/env.rb:53:in `socket_name'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client/run.rb:26:in `connect'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client/run.rb:31:in `call'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
	from /Users/UserName/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
	from /Users/UserName/.rbenv/versions/2.4.2/bin/spring:23:in `load'
	from /Users/UserName/.rbenv/versions/2.4.2/bin/spring:23:in `<main>'

「app.groovy」

@RestController
class App {
  @RequestMapping("/")
  def home() {
    "Hello!!"
  }
}

「.bash_profile」

export PATH="/Users/UserName/spring\ boot/spring-2.0.0.BUILD-SNAPSHOT/bin:$PATH”

Answer 1

もしかしてですがSpring違いなのでは・・・

ログからすると、使われているのは、Ruby on RailsのプリローダーのSpringのようですが
https://github.com/rails/spring

SpringBootでGroovyのアプリを動かしたいということは、JavaのフレームワークのSpringBootを使う必要があるのでは
https://docs.spring.io/spring-boot/docs/current/reference/html/getting-started-installing-spring-boot.html#getting-started-installing-the-cli