Quarkus + Maven Hello World Example

Hello everyone, Today we will learn how how to engender a Maven + Quarkus hello world project.
 
 
 Following technologies stack being used:
  • JDK 11
  • IntelliJ IDEA 
  • Quarkus 1.3.0
  • Maven

 

1.Maven/Dependency Management [pom.xml] 

<?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 
                            http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>QuarkusHelloWorld</artifactId>
    <version>1.0-SNAPSHOT</version>

   <properties>
      <compiler-plugin.version>3.8.1</compiler-plugin.version>
      <maven.compiler.parameters>true</maven.compiler.parameters>
      <maven.compiler.source>11</maven.compiler.source>
      <maven.compiler.target>11</maven.compiler.target>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
      <quarkus-plugin.version>2.2.3.Final</quarkus-plugin.version>
      <quarkus.platform.artifact-id>quarkus-universe-bom</quarkus.platform.artifact-id>
      <quarkus.platform.group-id>io.quarkus</quarkus.platform.group-id>
      <quarkus.platform.version>2.2.3.Final</quarkus.platform.version>
      <surefire-plugin.version>2.22.1</surefire-plugin.version>
   </properties>

   <dependencyManagement>
      <dependencies>
         <dependency>
            <groupId>${quarkus.platform.group-id}</groupId>
            <artifactId>${quarkus.platform.artifact-id}</artifactId>
            <version>${quarkus.platform.version}</version>
            <type>pom</type>
            <scope>import</scope>
         </dependency>
      </dependencies>
   </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-resteasy-jsonb</artifactId>
        </dependency>
                <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-junit5</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.rest-assured</groupId>
            <artifactId>rest-assured</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
      <plugins>
         <plugin>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-maven-plugin</artifactId>
            <version>${quarkus-plugin.version}</version>
            <executions>
               <execution>
                  <goals>
                     <goal>build</goal>
                  </goals>
               </execution>
            </executions>
         </plugin>
         <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>${compiler-plugin.version}</version>
         </plugin>
         <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>${surefire-plugin.version}</version>
            <configuration>
               <systemProperties>
<java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
               </systemProperties>
            </configuration>
         </plugin>
      </plugins>
   </build>

   <profiles>
      <profile>
         <id>native</id>
         <activation>
            <property>
               <name>native</name>
            </property>
         </activation>
         <build>
            <plugins>
               <plugin>
                  <artifactId>maven-failsafe-plugin</artifactId>
                  <version>${surefire-plugin.version}</version>
                  <executions>
                     <execution>
                        <goals>
                           <goal>integration-test</goal>
                           <goal>verify</goal>
                        </goals>
                        <configuration>
                           <systemProperties>
<native.image.path>${project.build.directory}/${project.build.finalName}-runner</native.image.path>
                           </systemProperties>
                        </configuration>
                     </execution>
                  </executions>
               </plugin>
            </plugins>
         </build>
         <properties>
            <quarkus.package.type>native</quarkus.package.type>
         </properties>
      </profile>
   </profiles>
</project>
 
The Quarkus core Technologies:
  • Quarkus uses RESTEasy for the JAX-RS endpoint. 
  • Quarkus uses Vert.x and Netty at its core, providing reactive and non-blocking HTTP layer. 
  • Quarkus uses JBoss Log Manager as the default logging framework. 
  • Quartus utilizes a modified version of Undertow  that runs on top of Vert.x 
  • Quarkus uses SmallRye Config, implementation of Eclipse MicroProfile Config, for configuration data.
For testing:
  • Quarkus uses JUnit 5 for testing. 
  • Quarkus uses rest-assured to test HTTP endpoints.

2. Quarkus JAX-RX endpoint

package com.knf.endpoint;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;


@Path("/api/hello")
public class EndPoint {
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String getUsers() {
        return "Hello World";
    }
}

3 . Testing

Build application  jar file: mvn clean package


Start application: java -jar quarkus-run.jar
Open the browser and hit the endpoint localhost:8080/api/hello
 
Download the source code: 

More Quarkus Related topics,

Kotlin + Quarkus

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