@Grapes([@GrabConfig(systemClassLoader=true),@Grab(group='org.springframework.boot',module='spring-boot-starter-web',version='2.2.6.RELEASE'),@GrabExclude(group='org.springframework.boot',module='spring-boot-starter-tomcat'),@Grab(group='org.springframework.boot',module='spring-boot-starter-undertow',version='2.2.6.RELEASE')])importorg.springframework.boot.autoconfigure.SpringBootApplicationimportorg.springframework.web.bind.annotation.*importorg.springframework.boot.SpringApplication/** * @author akrystian */@SpringBootApplication@RestControllerclassApp{@RequestMapping("/")StringsimpleEndpoint(){return"Hello!!"}}staticvoidmain(String[]args){SpringApplication.run(App.class,args)}

groovy server.groovy

  .   ____          _            __ _ _ /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/  ___)| |_)| | | | | || (_| |  ) ) ) )  '  |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot ::        (v2.2.6.RELEASE)2020-04-04 02:28:52.463  INFO 32601 --- [           main] groovy.ui.GroovyMain                     : Starting GroovyMain v2.5.5 on Legion with PID 32601 (/home/krystian/.sdkman/candidates/groovy/current/lib/groovy-2.5.5.jar started by krystian in /home/krystian/IdeaProjects/code.conference.site)2020-04-04 02:28:52.469  INFO 32601 --- [           main] groovy.ui.GroovyMain                     : No active profile set, falling back to default profiles: default2020-04-04 02:28:53.391  WARN 32601 --- [           main] io.undertow.websockets.jsr               : UT026010: Buffer pool was not set on WebSocketDeploymentInfo, the default pool will be used2020-04-04 02:28:53.411  INFO 32601 --- [           main] io.undertow.servlet                      : Initializing Spring embedded WebApplicationContext2020-04-04 02:28:53.411  INFO 32601 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 871 ms2020-04-04 02:28:53.586  INFO 32601 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'2020-04-04 02:28:53.716  WARN 32601 --- [           main] .b.a.g.t.GroovyTemplateAutoConfiguration : Cannot find template location: classpath:/templates/ (please add some templates, check your Groovy configuration, or set spring.groovy.template.check-template-location=false)2020-04-04 02:28:53.859  INFO 32601 --- [           main] io.undertow                              : starting server: Undertow - 2.0.30.Final2020-04-04 02:28:53.866  INFO 32601 --- [           main] org.xnio                                 : XNIO version 3.3.8.Final2020-04-04 02:28:53.873  INFO 32601 --- [           main] org.xnio.nio                             : XNIO NIO Implementation Version 3.3.8.Final2020-04-04 02:28:53.994  INFO 32601 --- [           main] o.s.b.w.e.u.UndertowServletWebServer     : Undertow started on port(s) 8080 (http) with context path ''2020-04-04 02:28:53.998  INFO 32601 --- [           main] groovy.ui.GroovyMain                     : Started GroovyMain in 1.996 seconds (JVM running for 4.051)2020-04-04 02:29:32.110  INFO 32601 --- [  XNIO-1 task-1] io.undertow.servlet                      : Initializing Spring DispatcherServlet 'dispatcherServlet'2020-04-04 02:29:32.110  INFO 32601 --- [  XNIO-1 task-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'2020-04-04 02:29:32.118  INFO 32601 --- [  XNIO-1 task-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 8 ms

> curl-i http://localhost:8080/  HTTP/1.1 200 OK  Connection: keep-alive  Content-Type: text/plain;charset=UTF-8  Content-Length: 7  Date: Sat, 04 Apr 2020 00:42:57 GMT  Hello!!%