Example kotlin + openapi generator

pom.xml

<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>com.sourcelabs</groupId>
	<artifactId>backoffice-tool</artifactId>
	<version>0.0.1</version>
	<packaging>jar</packaging>

	<name>backoffice-tool</name>
	<description>Spring Boot Kotlin Application</description>

	<properties>
		<java.version>21</java.version>
		<kotlin.version>2.0.20</kotlin.version>
		<spring-boot.version>3.2.0</spring-boot.version>
		<testcontainers.version>1.20.2</testcontainers.version>
		<openapi.version>2.6.0</openapi.version>
	</properties>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>3.2.0</version>
		<relativePath/>
	</parent>

	<dependencies>
		<!-- Spring Boot Starters -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-security</artifactId>
		</dependency>

		<!-- Spring Boot Starter for Data JDBC -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jdbc</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-actuator</artifactId>
		</dependency>

		<!-- Spring Boot Test for JUnit -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

		<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-devtools</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-oauth2-client</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-oauth2-resource-server</artifactId>
		</dependency>

    <!-- Liquibase-->
		<dependency>
			<groupId>org.liquibase</groupId>
			<artifactId>liquibase-core</artifactId>
		</dependency>
    
		<!-- PostgreSQL Driver -->
		<dependency>
			<groupId>org.postgresql</groupId>
			<artifactId>postgresql</artifactId>
		</dependency>

		<!-- Testcontainers for testing -->
		<dependency>
			<groupId>org.testcontainers</groupId>
			<artifactId>testcontainers</artifactId>
		</dependency>

		<dependency>
		<groupId>org.testcontainers</groupId>
		<artifactId>postgresql</artifactId>
		</dependency>

		<!-- Kotlin Dependencies -->
		<dependency>
			<groupId>org.jetbrains.kotlin</groupId>
			<artifactId>kotlin-reflect</artifactId>
		</dependency>
		<dependency>
			<groupId>org.jetbrains.kotlin</groupId>
			<artifactId>kotlin-stdlib-jdk8</artifactId>
		</dependency>

		<!-- Springdoc Dependencies -->
		<dependency>
			<groupId>org.springdoc</groupId>
			<artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
			<version>${openapi.version}</version>
		</dependency>

		<!-- Jakarta Dependencies -->
		<dependency>
			<groupId>jakarta.xml.bind</groupId>
			<artifactId>jakarta.xml.bind-api</artifactId>
		</dependency>

		<dependency>
			<groupId>jakarta.validation</groupId>
			<artifactId>jakarta.validation-api</artifactId>
		</dependency>

		<!-- JUnit Jupiter (JUnit 5) for running tests -->
		<dependency>
			<groupId>org.junit.jupiter</groupId>
			<artifactId>junit-jupiter-engine</artifactId>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
		</dependency>

		<!-- Jackson module for LocalDate -->
		<dependency>
			<groupId>com.fasterxml.jackson.datatype</groupId>
			<artifactId>jackson-datatype-jsr310</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.security</groupId>
			<artifactId>spring-security-test</artifactId>
			<scope>test</scope>
		</dependency>

    <dependency>
			<groupId>io.mockk</groupId>
			<artifactId>mockk-jvm</artifactId>
			<version>1.13.2</version>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>com.ninja-squad</groupId>
			<artifactId>springmockk</artifactId>
			<version>4.0.2</version>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<build>
		<sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
		<testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
		<resources>
			<resource>
				<directory>${project.basedir}/src/main/resources</directory>
			</resource>
		</resources>

		<plugins>
			<!-- Kotlin Maven Plugin -->
			<plugin>
				<groupId>org.jetbrains.kotlin</groupId>
				<artifactId>kotlin-maven-plugin</artifactId>
				<configuration>
					<compilerPlugins>
						<plugin>spring</plugin>
						<plugin>no-arg</plugin>
					</compilerPlugins>
				</configuration>
				<dependencies>
					<dependency>
						<groupId>org.jetbrains.kotlin</groupId>
						<artifactId>kotlin-maven-allopen</artifactId>
						<version>${kotlin.version}</version>
					</dependency>
					<dependency>
						<groupId>org.jetbrains.kotlin</groupId>
						<artifactId>kotlin-maven-noarg</artifactId>
						<version>${kotlin.version}</version>
					</dependency>
				</dependencies>
			</plugin>

			<!-- Spring Boot Maven Plugin -->
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<configuration>
					<source>21</source>
					<target>21</target>
				</configuration>
			</plugin>
			<!-- OpenAPI Generator -->
			<plugin>
				<groupId>org.openapitools</groupId>
				<artifactId>openapi-generator-maven-plugin</artifactId>
				<version>7.9.0</version>
				<executions>
					<execution>
						<goals>
							<goal>generate</goal>
						</goals>
						<configuration>
							<inputSpec>${project.basedir}/src/main/resources/openapi/master-openapi.yml</inputSpec>
							<generatorName>kotlin-spring</generatorName>
							<output>${project.build.directory}/generated-sources/openapi</output>
							<apiPackage>com.sourcelabs.backofficetool.api</apiPackage>
							<modelPackage>com.sourcelabs.backofficetool.model</modelPackage>
							<supportingFilesToGenerate>false</supportingFilesToGenerate>
							<configOptions>
								<documentationProvider>springdoc</documentationProvider>
								<beanQualifiers>true</beanQualifiers>
								<interfaceOnly>true</interfaceOnly>
								<swaggerAnnotations>true</swaggerAnnotations>
								<useSpringBoot3>true</useSpringBoot3>
								<sourceFolder>/</sourceFolder>
								<useBeanValidation>true</useBeanValidation>
								<skipDefaultInterface>true</skipDefaultInterface>
								<useTags>true</useTags>
							</configOptions>
						</configuration>
					</execution>
				</executions>
			</plugin>

			<plugin>
				<groupId>org.codehaus.mojo</groupId>
				<artifactId>build-helper-maven-plugin</artifactId>
				<executions>
					<execution>
						<id>add-source</id>
						<phase>generate-sources</phase>
						<goals>
							<goal>add-source</goal>
						</goals>
						<configuration>
							<sources>
								<source>target/generated-sources/openapi</source>
							</sources>
						</configuration>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>

	<repositories>
		<repository>
			<id>spring-releases</id>
			<url>https://repo.spring.io/release</url>
		</repository>
	</repositories>
</project>