Hi! I have a multiplatform module containing a server, with one kotlin multiplatform dependency module . Running it from main function with play button produces following error:

Error: Could not find or load main class com.well.server.ApplicationKt

I’ve found a solution to run it, using following task:

task<JavaExec>("run") {

main = "com.well.server.ApplicationKt"

val jvm by kotlin.targets.getting

val main: KotlinCompilation<KotlinCommonOptions> by jvm.compilations

val runtimeDependencies = (main as KotlinCompilationToRunnableFiles<KotlinCommonOptions>).runtimeDependencyFiles

classpath = files(main.output.allOutputs, runtimeDependencies)

}

One of the minuses - I can’t debug server and run an other module, because server starts running as part of task, and task progress remains 92 until I abort it. Is there a better solution? But the main goal right now is to deploy the server. Following the official guide, I tried this code:

tasks.create("stage") {

dependsOn(tasks.getByName("installDist"))

}

application {

mainClassName = "ApplicationKt"

}

distributions {

main {

contents {

from("$buildDir/libs") {

rename("${rootProject.name}-jvm", rootProject.name)

into("lib")

}

}

}

}

tasks.getByName<JavaExec>("run") {

`classpath(tasks.getByName<Jar>("jvmJar")) // so that the JS artifacts generated by

jvmJar

can be found and served`

}

But

./gradlew :server:run

returns

Could not find or load main class ApplicationKt

error, and

:server:jvmJar

finishes without errors but doesn’t seems to produce the output

Can you send us your main function? Play button should work!

@Big Chungus I’ve created a sample project. file with the main function: https://github.com/PhilipDukhov/KMP-server-test/blob/main/server/src/jvmMain/kotlin/com/well/server/Application.kt

Looks like IDEA is not picking up your custom resources folder. Can you try moving it to

src/jvmMain/resources

?

done, but result is the same error🤔

Aaaaaah! I remember having the same. I know what's up 😄

tried it too, still `Could not find or load main class`😞

Damn!

what have you changed in the config? I see no difference with a default one, and it still doesn’t work for me. have you changed main class? I tried specifying

io.ktor.server.netty.EngineMain

in the config, and it says

Neither port nor sslPort specified

. yet running

./gradlew run

indeed works

Did you make sure to select correct module in Run Configuration dialog?

Jesus, it’s really related to android module somehow😱 I’ve pushed fix so you can build it in INTELLIJ without disabling the app module..

Works fine for me now

have you run sync after un-committing

app

? I just tried on your commit and it works only with the committed

app

module.

i did

Try re-importing it to intellij? i.e. remove .idea and go through import from existing sources again

build.gradle.kts

plugins {
  kotlin("multiplatform")
  id("tz.co.asoft.application") version "0.0.7"
}

konfig {
  debug(
    "Main-Class" to "io.ktor.server.netty.EngineMain"
  )
}

after that you can just run

./gradlew jvmRunDebug

I tried cleaning .idea and build folders, as well as cloning repo from scratch, still

Could not find or load main class

if android module is enabled, and works if disabled.. also even if it works(without android module), running executable created with

:distZip

fails with

Neither port nor sslPort specified

.. tried specifying port as a param, it says

No configuration setting found for key 'ktor'

Why can it ignore

application.conf

?

You don't have to add any dependencies if you are not using the konfigs. Only the gradle plugin to run the application

I'm on eap intellij. Maybe try upgrading your idea and make sure to run gradle commands via wrapper?

ok, it works on EAP😁 any idea how to fix the distribution? running executable created with 

:distZip

  fails with 

Neither port nor sslPort specified

 .. tried specifying port as a param, it says  

No configuration setting found for key 'ktor'

  Why can it ignore 

application.conf

?

No clue never used that. Try applying shadow plugin to get fat jar instead

Thanks for help, man!

Np, glad you got this sorted