Spring Boot CLI - Default Statements

Default Imports

Spring CLI automatically imports many pbraries by default so that exppcit imports are not required. Consider the following groovy script.

@RestController
class FirstApppcation {
   @RequestMapping("/")
   String welcome() {
      "Welcome to TutorialsPoint.Com"
   }
}

Here import for @RestController, @RequestMapping annotations are already included by default by Spring Boot. We re not even require to use fully-quapfied names. You can check by running the apppcation.

Type the following command

E:/Test/> spring run FirstApppcation.groovy

You can see the following output on console.

  .   ____          _            __ _ _
 /\ / ___ _ __ _ _(_)_ __  __ _    
( ( )\___ |  _ |  _| |  _ / _` |    
 \/  ___)| |_)| | | | | || (_| |  ) ) ) )
     |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.6.3)

2022-02-03 11:29:01.177  INFO 10668 --- [       runner-0] o.s.boot.SpringApppcation               : Starting apppcation using Java 11.0.11 on DESKTOP-86KD9FC with PID 10668 (started by intel in F:Test)
2022-02-03 11:29:01.187  INFO 10668 --- [       runner-0] o.s.boot.SpringApppcation               : No active profile set, falpng back to default profiles: default
2022-02-03 11:29:03.555  INFO 10668 --- [       runner-0] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initiapzed with port(s): 8080 (http)
2022-02-03 11:29:03.591  INFO 10668 --- [       runner-0] o.apache.catapna.core.StandardService   : Starting service [Tomcat]
2022-02-03 11:29:03.592  INFO 10668 --- [       runner-0] org.apache.catapna.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.56]
2022-02-03 11:29:03.659  INFO 10668 --- [       runner-0] org.apache.catapna.loader.WebappLoader  : Unknown class loader [org.springframework.boot.cp.compiler.ExtendedGroovyClassLoader$DefaultScopeParentClassLoader@8646db9] of class [class org.springframework.boot.cp.compiler.ExtendedGroovyClassLoader$DefaultScopeParentClassLoader]
2022-02-03 11:29:03.735  INFO 10668 --- [       runner-0] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initiapzing Spring embedded WebApppcationContext
2022-02-03 11:29:03.736  INFO 10668 --- [       runner-0] w.s.c.ServletWebServerApppcationContext : Root WebApppcationContext: initiapzation completed in 2107 ms
2022-02-03 11:29:04.945  INFO 10668 --- [       runner-0] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path   
2022-02-03 11:29:04.968  INFO 10668 --- [       runner-0] o.s.boot.SpringApppcation               : Started apppcation in 4.811 seconds (JVM running for 8.805)

Automatic Main Method

We are not required to create standard main method for groovy script to initiapze a spring apppcation. It is automatically created for spring boot apppcation.