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  • Bagaimana cara membuat Layanan Spring Boot Rest yang paling sederhana yang mendengarkan pada port 8081?

Bagaimana cara membuat Layanan Spring Boot Rest yang paling sederhana yang mendengarkan pada port 8081?

Diterbitkan: 2020-08-18

Cara membuat Layanan Spring Boot Rest yang paling sederhana mendengarkan pada port 8081

Dalam tutorial ini kita akan membahas langkah-langkah tentang cara membuat aplikasi web Spring Boot paling sederhana yang mendengarkan pada port 8081?

Tutorial ini didasarkan pada Aplikasi HelloWorld Boot Musim Semi Pertama di bawah artikel IntelliJ IDEA.

Bagaimana cara membuat Aplikasi HelloWorld Boot Musim Semi Pertama di IntelliJ IDEA dengan beberapa langkah sederhana?

Pastikan untuk mengikuti tutorial di atas dan memodifikasi langkah 4 dan 5.

Mari kita mulai:

Langkah-1, 2 dan 3.

Silakan ikuti langkah 1, 2 dan 3 dari tutorial aplikasi Spring Boot di atas.

Langkah-4

  • Silakan tambahkan dependensi Spring Boot Web.
    • web musim semi
    • Layanan Web Musim Semi
    • baju kaos
  • Klik Berikutnya

Pilih Ketergantungan Web IntelliJ IDEA

Langkah-5

  • Buka file: CrunchifywebappApplication.java dan letakkan kode di bawah ini.
  • Pastikan untuk mengubah nama paket dan file jika Anda melihat kesalahan.

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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 ) ;
     }
}

Langkah-6

  • Membangun proyek
  • Klik kanan pada file java dan jalankan sebagai aplikasi

Anda akan melihat di bawah keluaran konsol.

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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 )

Ini file pom.xml saya dengan semua dependensi 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 >

Mari kita mulai pengujian kita:

Tes-1

Kunjungi URL: http://localhost:8081/crunchify

Hasil tes booting pegas tanpa parameter URL

Tes-2

Kunjungi URL: http://localhost:8081/crunchify?name=Crunchify

Hasil tes booting pegas dengan parameter URL

Selamat. Anda telah berhasil membuat Aplikasi Web Boot Musim Semi dalam waktu tercepat.