Spring Boot CLI - Contoh Hello World
Dalam contoh ini, kita akan membuat aplikasi Web berbasis Spring Boot + MVC + Rest.
Langkah 1: Buat Folder sumber
Buat folder FirstApplication in E:\Test folder.
Langkah 2: Buat File Sumber
Buat file FirstApplication.groovy di E:\Test folder dengan kode sumber berikut -
@RestController
class FirstApplication {
@RequestMapping("/")
String welcome() {
"Welcome to TutorialsPoint.Com"
}
}Langkah 3: Jalankan aplikasi
Ketik perintah berikut -
E:/Test/> spring run FirstApplication.groovySekarang Spring Boot CLI akan beraksi, mengunduh dependensi yang diperlukan, menjalankan tomcat tertanam, menerapkan aplikasi dan memulainya. Anda dapat melihat output berikut di konsol -
Resolving dependencies..........................................................
................................................................................
........................
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _> | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.8.RELEASE)
2017-11-07 17:36:55.703 INFO 5528 --- [ runner-0] o.s.boot.SpringApplication:
Starting application on ...
2017-11-07 17:36:55.707 INFO 5528 --- [ runner-0] o.s.boot.SpringApplication:
No active profile set, falling back to default profiles: default
2017-11-07 17:36:56.067 INFO 5528 --- [ runner-0] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@4c108392: startup date [Tue Nov 07 17:36:
56 IST 2017]; root of context hierarchy
2017-11-07 17:36:57.327 INFO 5528 --- [ runner-0] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-11-07 17:36:57.346 INFO 5528 --- [ runner-0] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2017-11-07 17:36:57.354 INFO 5528 --- [ runner-0] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.23
2017-11-07 17:36:57.537 INFO 5528 --- [ost-startStop-1] org.apache.catalina.loader.WebappLoader : Unknown loader org.springframework.boot.cli.compiler.ExtendedGroovyClassLoader$DefaultScopeParentClassLoader@41bfad4f class org.springframew
ork.boot.cli.compiler.ExtendedGroovyClassLoader$DefaultScopeParentClassLoader
2017-11-07 17:36:57.567 INFO 5528 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2017-11-07 17:36:57.567 INFO 5528 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1500 ms
2017-11-07 17:36:57.725 INFO 5528 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2017-11-07 17:36:57.730 INFO 5528 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-11-07 17:36:57.730 INFO 5528 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-11-07 17:36:57.730 INFO 5528 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-11-07 17:36:57.730 INFO 5528 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2017-11-07 17:36:58.012 INFO 5528 --- [ runner-0] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@4c108392: startup date [Tue Nov 07 17:36:56 IST 2017]; root of context hierarchy
2017-11-07 17:36:58.066 INFO 5528 --- [ runner-0] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto public java.lang.String FirstApplication.home()
2017-11-07 17:36:58.070 INFO 5528 --- [ runner-0] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity
> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest) 2017-11-07 17:36:58.071 INFO 5528 --- [ runner-0] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web .BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) 2017-11-07 17:36:58.096 INFO 5528 --- [ runner-0] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2017-11-07 17:36:58.096 INFO 5528 --- [ runner-0] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2017-11-07 17:36:58.129 INFO 5528 --- [ runner-0] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2017-11-07 17:36:58.626 INFO 5528 --- [ runner-0] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup 2017-11-07 17:36:58.696 INFO 5528 --- [ runner-0] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http) 2017-11-07 17:36:58.699 INFO 5528 --- [ runner-0] o.s.boot.SpringApplication : Started application in 3.529 seconds (JVM running for 190.196) 2017-11-07 17:37:20.217 INFO 5528 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet' 2017-11-07 17:37:20.218 INFO 5528 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started 2017-11-07 17:37:20.238 INFO 5528 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 20 ms
Langkah 4: Jelajahi aplikasi di Browser
Aplikasi istirahat berbasis pegas kami sekarang siap. Buka url sebagai "http://localhost:8080/"dan Anda akan melihat keluaran berikut -
Hello WorldPoin penting
Pertimbangkan poin-poin berikut untuk memahami cara kerja Spring CLI. -
Semua JAR ketergantungan hanya diunduh untuk pertama kali.
Spring CLI secara otomatis mendeteksi JAR ketergantungan mana yang akan diunduh berdasarkan kelas dan anotasi yang digunakan dalam kode.
Terakhir setelah kode dikompilasi, terapkan file perang pada kucing jantan tertanam dan mulai server kucing jantan tertanam pada port default 8080.