Comment créer le service Spring Boot Rest le plus simple à l'écoute sur le port 8081?
Publié: 2020-08-18Dans ce didacticiel, nous allons passer en revue les étapes de création de votre application Web Spring Boot la plus simple qui écoute sur le port 8081.
Ce didacticiel est basé sur l'article ci-dessous 1st Spring Boot HelloWorld Application in IntelliJ IDEA.
Comment créer la 1ère application Spring Boot HelloWorld dans IntelliJ IDEA en quelques étapes simples ?
Veuillez vous assurer de suivre le didacticiel ci-dessus et de modifier les étapes 4 et 5.
Commençons:
Étapes 1, 2 et 3.
Veuillez suivre les étapes 1, 2 et 3 du didacticiel d'application Spring Boot ci-dessus.
Étape 4
- Veuillez ajouter les dépendances Spring Boot Web.
- Toile de printemps
- Services Web de printemps
- Jersey
- Cliquez sur Suivant
Étape-5
- Ouvrez le fichier : CrunchifywebappApplication.java et mettez le code ci-dessous.
- Assurez-vous de changer le package et le nom du fichier si vous voyez une erreur.
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package com . example . crunchify . crunchifywebapp ; import org . springframework . boot . SpringApplication ; import org . springframework . boot . autoconfigure . SpringBootApplication ; import org . springframework . web . bind . annotation . GetMapping ; import org . springframework . web . bind . annotation . RequestParam ; import org . springframework . web . bind . annotation . RestController ; /** * @author Crunchify.com * First Spring Hello World Web Application which listens on port 8081. * Version: 1.0 */ // SpringBootApplication: Indicates a configuration class that declares one or more @Bean methods and also triggers auto-configuration and component scanning. // This is a convenience annotation that is equivalent to declaring @Configuration, @EnableAutoConfiguration and @ComponentScan. // RestController: A convenience annotation that is itself annotated with @Controller and @ResponseBody. // Types that carry this annotation are treated as controllers where @RequestMapping methods assume @ResponseBody semantics by default. @ SpringBootApplication @ RestController public class CrunchifywebappApplication { public static void main ( String [ ] args ) { // setProperty: Sets the system property indicated by the specified key. First, if a security manager exists, its SecurityManager.checkPermission method is called with a PropertyPermission(key, "write") permission. This may result in a SecurityException being thrown. // If no exception is thrown, the specified property is set to the given value. System . setProperty ( "server.port" , "8081" ) ; System . setProperty ( "http.maxConnections" , "10" ) ; // run: Static helper that can be used to run a SpringApplication from the specified source using default settings SpringApplication . run ( CrunchifywebappApplication . class , args ) ; } @ GetMapping ( "/crunchify" ) public String heyCrunchify ( @ RequestParam ( value = "name" , defaultValue = "there" ) String crunchify ) { return String . format ( "Hey %s! Congratulations on creating your first Spring Boot Rest Service... by https://crunchify.com" , crunchify ) ; } } |
Étape-6
- Créer un projet
- Faites un clic droit sur le fichier java et exécutez-le en tant qu'application
Vous devriez voir ci-dessous la sortie de la console.
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Java HotSpot ( TM ) 64 - Bit Server VM warning : Options - Xverify : none and - noverify were deprecated in JDK 13 and will likely be removed in a future release . . ____ _ __ _ _ / \ \ / ___ '_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | ' _ | '_| | ' _ \ / _ ` | \ \ \ \ \ \ / ___ ) | | _ ) | | | | | | | ( _ | | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.3.3.RELEASE) 2020-08-17 13:07:33.379 INFO 71788 --- [ main] c.e.c.c.CrunchifywebappApplication : Starting CrunchifywebappApplication on LM-AUN-11022307 with PID 71788 (/Users/appshah/crunchify/intellij/crunchifywebapp/target/classes started by arpshah in /Users/appshah/crunchify/intellij/crunchifywebapp) 2020-08-17 13:07:33.380 INFO 71788 --- [ main] c.e.c.c.CrunchifywebappApplication : No active profile set, falling back to default profiles: default 2020-08-17 13:07:33.771 INFO 71788 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean ' org . springframework . ws . config . annotation . DelegatingWsConfiguration ' of type [org.springframework.ws.config.annotation.DelegatingWsConfiguration$EnhancerBySpringCGLIB$a474bef9] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2020-08-17 13:07:33.814 INFO 71788 --- [ main] .w.s.a.s.AnnotationActionEndpointMapping : Supporting [WS-Addressing August 2004, WS-Addressing 1.0] 2020-08-17 13:07:33.949 INFO 71788 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8081 (http) 2020-08-17 13:07:33.954 INFO 71788 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2020-08-17 13:07:33.954 INFO 71788 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.37] 2020-08-17 13:07:34.015 INFO 71788 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2020-08-17 13:07:34.016 INFO 71788 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 606 ms 2020-08-17 13:07:34.117 INFO 71788 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService ' applicationTaskExecutor ' 2020-08-17 13:07:34.202 INFO 71788 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8081 (http) with context path ' ' 2020 - 08 - 17 13 : 07 : 34.210 INFO 71788 --- [ main ] c . e . c . c . CrunchifywebappApplication : Started CrunchifywebappApplication in 1.018 seconds ( JVM running for 1.418 ) |

Voici mon fichier pom.xml avec toutes les dépendances Web :
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<? xml version = "1.0" encoding = "UTF-8" ?> < project xmlns = "http://maven.apache.org/POM/4.0.0" xmlns : xsi = "http://www.w3.org/2001/XMLSchema-instance" xsi : schemaLocation = "http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd" > < modelVersion > 4.0.0 < / modelVersion > < parent > < groupId > org . springframework . boot < / groupId > < artifactId > spring - boot - starter - parent < / artifactId > < version > 2.3.3.RELEASE < / version > < relativePath / > < ! -- lookup parent from repository -- > < / parent > < groupId > com . example . crunchify < / groupId > < artifactId > crunchifywebapp < / artifactId > < version > 0.0.1 - SNAPSHOT < / version > < name > crunchifywebapp < / name > < description > Crunchify ' s Hello World Web project for Spring Boot < / description > < properties > < java . version > 11 < / java . version > < / properties > < dependencies > < dependency > < groupId > org . springframework . boot < / groupId > < artifactId > spring - boot - starter - jersey < / artifactId > < / dependency > < dependency > < groupId > org . springframework . boot < / groupId > < artifactId > spring - boot - starter - web < / artifactId > < / dependency > < dependency > < groupId > org . springframework . boot < / groupId > < artifactId > spring - boot - starter - web - services < / artifactId > < / dependency > < dependency > < groupId > org . springframework . boot < / groupId > < artifactId > spring - boot - starter - test < / artifactId > < scope > test < / scope > < exclusions > < exclusion > < groupId > org . junit . vintage < / groupId > < artifactId > junit - vintage - engine < / artifactId > < / exclusion > < / exclusions > < / dependency > < / dependencies > < build > < plugins > < plugin > < groupId > org . springframework . boot < / groupId > < artifactId > spring - boot - maven - plugin < / artifactId > < / plugin > < / plugins > < / build > < / project > |
Commençons notre test :
Essai-1
Visitez l'URL : http://localhost:8081/crunchify
Essai-2
Visitez l'URL : http://localhost:8081/crunchify?name=Crunchify
Toutes nos félicitations. Vous avez créé avec succès l'application Web Spring Boot dans les meilleurs délais.