CODEWITHSUNDEEP
javaspringspring-bootkotlingradlew
WBLord
WBLord

Reputation: 1025

Java and kotlin in one spring project

I have a spring project on kotlin. For faster development, it was decided to add another opportunity to develop on java. But when we started adding java classes, we found that spring doesn't see them.

build.gradle.kts

import org.jetbrains.kotlin.gradle.tasks.KotlinCompile

plugins {
    id("org.springframework.boot") version "2.6.7"
    id("io.spring.dependency-management") version "1.0.11.RELEASE"
    kotlin("jvm") version "1.6.21"
    kotlin("plugin.spring") version "1.6.21"
    kotlin("plugin.jpa") version "1.6.21"
    kotlin("plugin.allopen") version "1.4.32"
    kotlin("kapt") version "1.4.32"
}

group = "com.example"
version = "0.0.1-SNAPSHOT"
java.sourceCompatibility = JavaVersion.VERSION_17

configurations {
    compileOnly {
        extendsFrom(configurations.annotationProcessor.get())
    }
}

repositories {
    mavenCentral()
}

dependencies {
    implementation("org.springframework.boot:spring-boot-starter-data-jpa")
    runtimeOnly("org.postgresql:postgresql")
    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.13.2")
    implementation("io.jsonwebtoken:jjwt:0.9.1")
    implementation("io.jsonwebtoken:jjwt-api:0.11.2")
    implementation("org.springdoc:springdoc-openapi-ui:1.6.0")
    implementation("org.springdoc:springdoc-openapi-kotlin:1.6.0")
    implementation("org.springframework.boot:spring-boot-starter-web")
    implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
    implementation("org.jetbrains.kotlin:kotlin-reflect")
    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
    developmentOnly("org.springframework.boot:spring-boot-devtools")
    annotationProcessor("org.springframework.boot:spring-boot-configuration-processor")
    kapt("org.springframework.boot:spring-boot-configuration-processor")
    testImplementation("org.springframework.boot:spring-boot-starter-test") {
        exclude(module = "junit")
        exclude(module = "mockito-core")
    }
    testImplementation("org.junit.jupiter:junit-jupiter-api")
    testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine")
    testImplementation("com.ninja-squad:springmockk:3.0.1")
    testImplementation("org.springframework.security:spring-security-test")
}

allOpen {
    annotation("javax.persistence.Entity")
    annotation("javax.persistence.Embeddable")
    annotation("javax.persistence.MappedSuperclass")
}

tasks.withType<KotlinCompile> {
    kotlinOptions {
        freeCompilerArgs = listOf("-Xjsr305=strict")
        jvmTarget = "17"
    }
}

tasks.withType<Test> {
    useJUnitPlatform()
}

I know there are projects that support many languages within themselves.

I tried to connect java plugin, but nothing worked.

Upvotes: 1

Views: 956

Answers (1)

WBLord
WBLord

Reputation: 1025

I found such a solution, but it seems to me it is not quite right.

    configure<SourceSetContainer> {
        named("main") {
            java.srcDir("src/main/kotlin")
        }
    }

Upvotes: 2

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