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Add kotlin module: null safety, coroutines, allopen/noarg, JSpecify interop (post #42)

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Claude
2026-10-08 05:35:15 +00:00
parent 83d245e726
commit f736108067
21 changed files with 659 additions and 1 deletions
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kotlin/pom.xml
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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>4.1.1</version>
<relativePath/>
</parent>
<groupId>com.ankurm</groupId>
<artifactId>kotlin</artifactId>
<version>1.0.0</version>
<name>kotlin</name>
<description>Kotlin with Spring Boot 4.1: null safety/JSpecify interop, allopen/noarg, and coroutines in controllers</description>
<packaging>jar</packaging>
<properties>
<java.version>25</java.version>
<!-- Spring Boot 4.1.1's own managed version (spring-boot-dependencies POM), not the latest
Kotlin GA (2.4.20 at time of writing): see the post for why that distinction matters. -->
<kotlin.version>2.3.21</kotlin.version>
<kotlin.compiler.jvmTarget>25</kotlin.compiler.jvmTarget>
<kotlinx-coroutines.version>1.10.2</kotlinx-coroutines.version>
<jackson-module-kotlin.version>2.22.3</jackson-module-kotlin.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-reflect</artifactId>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-stdlib</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.module</groupId>
<artifactId>jackson-module-kotlin</artifactId>
<version>${jackson-module-kotlin.version}</version>
</dependency>
<!-- Coroutines: needed on the classpath even under plain Tomcat/MVC; see the post
for why suspend/Flow controller methods still go through this reactive bridge. -->
<dependency>
<groupId>org.jetbrains.kotlinx</groupId>
<artifactId>kotlinx-coroutines-core</artifactId>
<version>${kotlinx-coroutines.version}</version>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlinx</groupId>
<artifactId>kotlinx-coroutines-reactor</artifactId>
<version>${kotlinx-coroutines.version}</version>
</dependency>
<!-- JSpecify, explicitly, so the legacy/annotated Java interop demo compiles against the
exact same annotations Spring Framework 7 itself uses. -->
<dependency>
<groupId>org.jspecify</groupId>
<artifactId>jspecify</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-test-junit5</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>kotlin-demo</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-plugin</artifactId>
<version>${kotlin.version}</version>
<configuration>
<args>
<arg>-Xjsr305=strict</arg>
</args>
<compilerPlugins>
<plugin>spring</plugin>
<plugin>jpa</plugin>
</compilerPlugins>
</configuration>
<executions>
<execution>
<id>compile</id>
<phase>compile</phase>
<goals><goal>compile</goal></goals>
<configuration>
<sourceDirs>
<sourceDir>${project.basedir}/src/main/kotlin</sourceDir>
<sourceDir>${project.basedir}/src/main/java</sourceDir>
</sourceDirs>
</configuration>
</execution>
<execution>
<id>test-compile</id>
<phase>test-compile</phase>
<goals><goal>test-compile</goal></goals>
<configuration>
<sourceDirs>
<sourceDir>${project.basedir}/src/test/kotlin</sourceDir>
</sourceDirs>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-allopen</artifactId>
<version>${kotlin.version}</version>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-noarg</artifactId>
<version>${kotlin.version}</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<executions>
<execution>
<id>default-compile</id>
<phase>none</phase>
</execution>
<execution>
<id>default-testCompile</id>
<phase>none</phase>
</execution>
<execution>
<id>java-compile</id>
<phase>compile</phase>
<goals><goal>compile</goal></goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>