Railway•16mo ago

Kotlin Spring Boot Deploy Issue

Hello, I'm trying to deploy a basic spring boot app using kotlin, gradle, and jdk 8. There are no special build instructions in my build.gradle.kts or railway service configuration. And I receive the error:

no main manifest attribute, in build/libs/api-0.0.1-SNAPSHOT-plain.jar

no main manifest attribute, in build/libs/api-0.0.1-SNAPSHOT-plain.jar

When I make the change to my build.gradle.kts to point to my main class file, I receive this error:

Exception in thread "main" java.lang.NoClassDefFoundError: kotlin/jvm/internal/Intrinsics
at com.rpwadmin.api.BackendApplicationKt.main(BackendApplication.kt)
Caused by: java.lang.ClassNotFoundException: kotlin.jvm.internal.Intrinsics
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 1 more

Exception in thread "main" java.lang.NoClassDefFoundError: kotlin/jvm/internal/Intrinsics
at com.rpwadmin.api.BackendApplicationKt.main(BackendApplication.kt)
Caused by: java.lang.ClassNotFoundException: kotlin.jvm.internal.Intrinsics
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 1 more

I've started from jdk 17 and gone all they way down and I can't seem to find a work around.

2 Replies

Percy•16mo ago

Project ID: c78b6dc1-6ade-4474-9dac-6f53ae71e22c

mynameisjesOP•16mo ago

c78b6dc1-6ade-4474-9dac-6f53ae71e22c I guess there is kindof a work arround by making a "fatJar"

tasks.jar {
    enabled = true
    manifest {
        attributes["Main-Class"] = "***"
    }
    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
    from(sourceSets.main.get().output)
    dependsOn(configurations.runtimeClasspath)
    from({
        configurations.runtimeClasspath.get().filter { it.name.endsWith("jar") }.map { zipTree(it) }
    })
}

tasks.jar {
    enabled = true
    manifest {
        attributes["Main-Class"] = "***"
    }
    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
    from(sourceSets.main.get().output)
    dependsOn(configurations.runtimeClasspath)
    from({
        configurations.runtimeClasspath.get().filter { it.name.endsWith("jar") }.map { zipTree(it) }
    })
}

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Kotlin Spring Boot Deploy Issue