I want to make a JAR to test and deploy my app but it doesn't work, locally it can't find the main attribute in the manifest file, and in the deployement it starts but i have this error :
java.lang.noclassdeffounderror: kotlinx/coroutines/slf4j/mdccontex
W
hen I do it locally using the artifact Jar I can't find the MainClass of my app, it recommands me all sorts of other modules.
I tried modying my gradle, the manifest, the configuration but really nothing works it's depressing, it looks so easy on some youtube videos but it just doesn't work
what I do to make the JAR
The classes i have access to when i try to select them
Here is my Gradle
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
plugins {
kotlin("jvm") version "1.5.10"
application
kotlin("plugin.serialization") version "1.6.10"
}
version = "1.0-SNAPSHOT"
repositories {
mavenCentral()
maven(url = "https://jitpack.io")
}
val ktor_version: String by project
dependencies {
// Fix HTML issue on some responses
implementation("org.apache.commons:commons-text:1.10.0")
// Ktor dependencies
implementation("io.ktor:ktor-client-auth:$ktor_version")
implementation("io.ktor:ktor-client-core:$ktor_version")
implementation("io.ktor:ktor-client-cio:$ktor_version")
implementation("io.ktor:ktor-client-resources:$ktor_version")
implementation("io.ktor:ktor-serialization-kotlinx-json:$ktor_version")
implementation("io.ktor:ktor-client-content-negotiation:$ktor_version")
implementation("io.ktor:ktor-client-logging:$ktor_version")
// Logging dependencies
implementation("ch.qos.logback:logback-classic:1.4.0")
implementation(kotlin("stdlib-jdk8"))
// Database
implementation ("mysql:mysql-connector-java:8.0.30")
implementation ("org.ktorm:ktorm-core:3.5.0")
implementation ("org.ktorm:ktorm-support-mysql:3.5.0")
}
application {
mainClass.set("MainKt")
}
val compileKotlin: KotlinCompile by tasks
compileKotlin.kotlinOptions {
jvmTarget = "1.8"
}
val compileTestKotlin: KotlinCompile by tasks
compileTestKotlin.kotlinOptions {
jvmTarget = "1.8"
}
tasks {
jar {
manifest {
attributes["Main-Class"] = application.mainClass
}
duplicatesStrategy = DuplicatesStrategy.EXCLUDE
configurations.compileClasspath.get().forEach {
from(if (it.isDirectory) it else zipTree(it))
}
}
compileKotlin{
kotlinOptions.jvmTarget = "1.8"
}
}
Thanks in advance
My project had a lot of issues and inconsistency so I started a new one and copied all the files / packages, spent an hour redoing all the imports and plugins that my code actually needed to run and it finally worked, the same comments don't work on the previous project
Related
We have an existing plugin project which configures various things (including static analysis), where we want to apply the plugin to the project itself.
The way this currently works for plugins written in Java is, you add the Java src dir to the buildSrc project, and then classes built there can be used in the main project. So I'm trying to get the same thing working for plugins written as Kotlin scripts.
But when I try to build it, compiling buildSrc fails with:
e: C:\Users\Trejkaz\Documents\test\self-applying-gradle-plugin\src\main\kotlin\example.common.gradle.kts: (1, 1): Unresolved reference: allprojects
> Task :buildSrc:compileKotlin FAILED
What's missing in order to make this work?
Further investigation:
If I put a copy of the files in buildSrc/src/main/kotlin, that works.
If I put a copy of the files in buildSrc/src/main/kotlin2 and use srcDirs to set that directory, that fails too. So it really looks like something isn't letting me relocate sources at all.
I pushed a repo to play with this here but what follows is the contents of the build scripts in case it's ever deleted.
The main build.gradle.kts:
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
plugins {
`java-gradle-plugin`
`kotlin-dsl`
// Matching version in Gradle
kotlin("jvm") version "1.5.31"
}
apply(from = "common-build.gradle.kts")
apply(plugin = "example.common") // 👈 trying to apply the compiled plugin here
group = "org.example"
version = "1.0-SNAPSHOT"
tasks.withType<KotlinCompile> {
kotlinOptions.jvmTarget = "11"
}
In buildSrc/build.gradle.kts, we have this - note that it adds a source dir for the sources in the main directory:
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
plugins {
`java-gradle-plugin`
`kotlin-dsl`
// Matching version in Gradle
kotlin("jvm") version "1.5.31"
}
apply(from = "../common-build.gradle.kts")
tasks.withType<KotlinCompile> {
kotlinOptions.jvmTarget = "11"
}
kotlin {
sourceSets["main"].kotlin.srcDir("../src/main/kotlin")
}
common-build.gradle.kts has everything common to both build scripts which we've figured out how to move to a common location (notably, the KotlinCompile isn't there, later I'll figure out why I can't move that as well):
repositories {
mavenCentral()
}
dependencies {
// Needed to compile Kotlin stuff but not added by the plugin for some reason
"implementation"("org.jetbrains.kotlin:kotlin-scripting-jvm")
}
The plugin script, src/main/kotlin/example.common.gradle.kts, contains:
allprojects {
// Configure something
}
This turns out to be a bug in Gradle's kotlin-dsl plugin.
The workaround is to add the source dirs before applying the plugin.
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
plugins {
`java-gradle-plugin`
`kotlin-dsl` apply false
// Matching version in Gradle
kotlin("jvm") version "1.5.31"
}
apply(from = "../common-build.gradle.kts")
tasks.withType<KotlinCompile> {
kotlinOptions.jvmTarget = "11"
}
kotlin {
sourceSets["main"].kotlin.srcDir("../src/main/kotlin")
}
// Workaround for https://github.com/gradle/gradle/issues/21052 -
// apply kotlin-dsl plugin last, because it erroneously fetches source dirs eagerly.
apply(plugin = "org.gradle.kotlin.kotlin-dsl")
I am trying to use Shadow Gradle plugin to create a fat jar.
Part of my build.gradle.kts looks like this:
plugins {
application
kotlin("jvm") version "1.6.21"
id("com.github.johnrengelman.shadow") version "7.1.2"
}
group = "com.test"
version = "0.1"
application {
mainClass.set("com.test.ApplicationKt")
}
Everything is good, but I want to include .properties files in the fat jar as well.
tasks {
withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> { kotlinOptions { jvmTarget = "17" } }
named<com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar>("shadowJar") {
archiveBaseName.set("shadow")
mergeServiceFiles()
manifest { attributes(mapOf("Main-Class" to "com.test.ApplicationKt")) }
// include("*.properties")
}
For some reason uncommenting the include("*.properties") statement above, makes my fat jar empty. I can build it ok with ./gradlew shadowJar but when I try to run the jar with java -jar I get the error Error: Could not find or load main class...
Any idea what I am missing?
specify the main class name inside shadow task
tasks {
named<ShadowJar>("shadowJar") {
archiveBaseName.set("shadow")
mergeServiceFiles()
manifest {
attributes(mapOf("Main-Class" to "main-class-path"))
}
}
}
I'm building a Plugin for the IntelliJ IDE to manipulate Kotlin files in a project. I've been able to write a bunch of tests to take a Kotlin file and generate a new file based on its contents. When I run this plugin in the IDE I'm unable to detect files as Kotlin files. When looking at the debugger my file says that it is a KtFile from the org.jetbrains.kotlin.psi library. But if I try to cast it to a KtFile I get an error:
java.lang.ClassCastException: org.jetbrains.kotlin.psi.KtFile cannot be cast to org.jetbrains.kotlin.psi.KtFile
So apparently the library version is off between runtime and compile time. What do I have to do to configure my plugin to use the correct Kotlin PSI at plugin runtime?
My plugin.xml looks like this:
<idea-plugin>
<id>...</id>
<name>...</name>
<vendor email="..." url="...">...</vendor>
<description><...</description>
<depends>com.intellij.modules.all</depends>
<depends>org.jetbrains.kotlin</depends>
<actions>...</actions>
</idea-plugin>
My build.gradle.kts looks like:
plugins {
id("org.jetbrains.intellij") version "0.4.16"
kotlin("jvm") version "1.3.61"
}
group = "..."
version = "..."
repositories {
mavenCentral()
}
dependencies {
implementation(kotlin("stdlib-jdk8"))
implementation(kotlin("compiler-embeddable", "1.3.61"))
implementation(kotlin("gradle-plugin", "1.3.61"))
testImplementation(group = "junit", name = "junit", version = "4.12")
}
buildscript {
repositories { mavenCentral() }
dependencies {
classpath(kotlin("compiler-embeddable", "1.3.61"))
classpath(kotlin("gradle-plugin", "1.3.61"))
}
}
intellij {
version = "2019.1.4"
setPlugins("Kotlin")
}
tasks {
compileKotlin {
kotlinOptions.jvmTarget = "1.8"
}
compileTestKotlin {
kotlinOptions.jvmTarget = "1.8"
}
}
tasks.getByName<org.jetbrains.intellij.tasks.PatchPluginXmlTask>("patchPluginXml") {
changeNotes("...")
}
I already am aware of How to include Kotlin PSI classes (e.g. KtClass) in Intellij IDEA Gradle plugin project written in Kotlin? and How to add Kotlin PSI source files to IDEA Plugin project configuration which is essentially what I want to be answered but haven't gotten anything to fix my issue. Maybe there is some documentation on this issue but it evades my searches.
Your dependencies should include implementation(kotlin("reflect")) and plugin.xml should include <depends>org.jetbrains.kotlin</depends>
I am trying to share Java code between Android and JVM targets using Kotlin Multiplatform feature (sample project: https://github.com/dmitrykolesnikovich/accessJavaCode-issue)
Simply saying, ":library1" and ":library2" both are Kotlin multiplatform libraries targeting JVM and Android. ":library2" depends on ":library1". They both uses Kotlin and Java. ":library2" is intended to be dependency of 1) Android application and 2) desktop (JavaFX) application. That's why 1) AAR artifact and 2) JAR artifact both are needed (?) - so I use 1) Android target and 2) JVM target for both ":library1" and ":library2".
The problem is that, when I have Java code in ":library1"
public class JavaCode {} // JavaCode.java
And Kotlin code in ":library2" that depends on ":library1"
class AccessJavaCode : JavaCode() // AccessJavaCode.kt
Android target is OK with recognizing Java but JVM target is not:
> Task :library2:compileKotlinJvm FAILED
e: AccessJavaCode.kt: (3, 38): Unresolved reference: JavaCode
In gradle config I define two plugins: kotlin-multiplatform and com.android.library:
apply plugin: "kotlin-multiplatform"
apply plugin: "com.android.library"
kotlin {
targets {
jvm()
android()
}
sourceSets {
jvmMain {
dependencies {
api kotlin("stdlib-common")
api kotlin("stdlib-jdk8")
}
}
androidMain {
dependsOn jvmMain
}
}
}
android {
compileSdkVersion 28
sourceSets {
main {
java.srcDirs += "src/jvmMain/kotlin" // Android target recognizes Java with this
manifest.srcFile "src/androidMain/AndroidManifest.xml"
}
}
}
I am pretty sure it’s something simple with my gradle file. Many thanks for your help guys.
~~~~ EDIT ~~~~
Another workaround the issue without losing the ability to generate an android archive .aar for the library1 would be to make a new version of this same library depending on precompiled artefacts of a splitted version of the original library1.
So you would end up with a multi-module gradle project, something like this:
library1-jvm with java plugin enabled
library1-android with android plugin enabled
library1 which will depends on prebuilt library1-jvm.jar and library1-android.aar
You could use whatever you prefer to publish those artefacts, but a local maven repo should work just fine!
That would mean replacing:
kotlin {
targets {
jvm()
android()
}
sourceSets {
jvmMain {
dependencies {
api kotlin("stdlib-common")
api kotlin("stdlib-jdk8")
}
}
androidMain {
dependsOn jvmMain
}
}
}
with:
kotlin {
targets {
jvm()
android()
}
sourceSets {
jvmMain {
dependencies {
api kotlin("stdlib-common")
api kotlin("stdlib-jdk8")
api "com.company:library-jvm:1.0.0"
}
}
androidMain {
dependsOn jvmMain
dependencies {
api "com.company:library-android:1.0.0"
}
}
}
}
That way, you don't need the java plugin at all in the final library1, because all the java code will already be built in a separate step.
Hence library1 could keep both the JVM and Android targets
~~~~~~~~~~~~~
In order to fix your issue, you need to:
Split your build.gradle configuration in order to have one config per library, this will be needed because you cannot enable the java plugin and the android at the same time for the same Gradle project, or you will end up with the following Error: The 'java' plugin has been applied, but it is not compatible with the Android plugins
Enable the java plugin in your library1 project if you want your JVM target to recognize your Java source files.
The Java source files need to be placed in the sibling directories java of the kotlin source roots.
More infos: Kotlin docs for java-support-in-jvm-targets
I also created a pull request solving your issue.
The downside of this approach is that you will not be able to generate an android archive .aar for the library1, but I guess using the java archive .jar in your android project should not be a problem at all.
library1/build.gradle:
apply plugin: "kotlin-multiplatform"
kotlin {
jvm {
withJava()
}
sourceSets {
jvmMain {
dependencies {
api kotlin("stdlib-common")
api kotlin("stdlib-jdk8")
}
}
}
}
library2/build.gradle:
apply plugin: "kotlin-multiplatform"
apply plugin: "com.android.library"
kotlin{
jvm()
android()
sourceSets {
jvmMain.dependencies {
api project(":library1")
}
androidMain {
dependsOn jvmMain
}
}
}
android {
compileSdkVersion 28
sourceSets {
main {
java.srcDirs += "src/jvmMain/kotlin"
manifest.srcFile "src/androidMain/AndroidManifest.xml"
}
}
}
I recently switched from old 1.2 multiplatform into 1.3. Difference is, there's one one build.gradle file per multiplatform module (I got 5 of them) so a lot less configuration.
However I can't seem to be able to configure creating runnable fat jar with all dependencies from jvm platform.
I used to use standard "application" plugin in my jvm project and jar task, but that does not work anymore. I found there's "jvmJar" task and I modified it (set Main-class), but created jar doesn't contain dependencies and crashes on ClassNotFoundException. How do I do it?
This is what I have now:
jvm() {
jvmJar {
manifest {
attributes 'Main-Class': 'eu.xx.Runner'
}
from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
}
}
I did hit that bump and used this work around.
1. Restructure your project
Lets call your project Project.
create another submodule say subA, which will have the gradle notation Project:subA
now, subA has your multiplatform code in it (It is the gradle project with apply :kotlin-multiplafrom) in its build.gradle
2. Add Another submodule
create another submodule which targets only jvm say subB, which will have the gradle notation Project:subB
So, subB will have plugins: 'application' and 'org.jetbrains.kotlin.jvm'
3. Add your module as a gradle dependency (see my build.gradle)
plugins {
id 'org.jetbrains.kotlin.jvm' version '1.3.31'
id "application"
}
apply plugin: "kotlinx-serialization"
group 'tz.or.self'
version '0.0.0'
mainClassName = "com.example.MainKt"
sourceCompatibility = 1.8
compileKotlin {
kotlinOptions.jvmTarget = "1.8"
}
dependencies {
implementation project(':subA')
}
you can proceed and build subB as you would a regular java project or even use the existing plugins, it will work
Got it working with the multiplatform plugin in kotlin 1.3.61:
The following works for a main file in src/jvmMain/kotlin/com/example/Hello.kt
Hello.kt must also specify its package as package com.example
I configured my jvm target in this way:
kotlin {
targets {
jvm()
configure([jvm]) {
withJava()
jvmJar {
manifest {
attributes 'Main-Class': 'com.example.HelloKt'
}
from { configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) } }
}
}
}
}
Got it to work with a slightly modified version of what luca992 did:
kotlin {
jvm() {
withJava()
jvmJar {
manifest {
attributes 'Main-Class': 'sample.MainKt'
}
from { configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) } }
}
}
...
}
The only way to get gradle/multiplatform working appears to be endless trial and error; It's a nightmare, it's not being built as a "build" system so much as a "build system"; to put it another way, these two tools (together or in isolation) are a means of implementing only a single software development life cycle that the plugin maker intended, however, if you've engineered a desired software lifecycle and CI/CD system and now your trying to implement that engineering, it will be MUCH harder to do it with these tools than it would be to do it with scripts, code or maven. There are a number of reasons for this:
Massive changing in coding convention due to the plugin makers only exposing bar minimum configurability, probably only giving access to the things they need for their own personal project.
Very poor documentation updates; Kotlin, gradle and plugins are changing so rapidly I have begun to seriously question the usefulness of these tools.
Thus, at the time of writing this seems to be the correct syntax to use when using kotlin 1.3.72, multiplatform 1.3.72, ktor 1.3.2 and gradle 6.2.2 (using the kts format).
Note the fatJar seems to assemble correctly but won't run, it can't find the class, so I included the second runLocally task I've been using in the mean time.
This isn't a complete solution so I hate posting it on here, but from what I can tell... it is the most complete and up to date solution I can find documented anywhere.
//Import variables from gradle.properties
val environment: String by project
val kotlinVersion: String by project
val ktorVersion: String by project
val kotlinExposedVersion: String by project
val mySqlConnectorVersion: String by project
val logbackVersion: String by project
val romeToolsVersion: String by project
val klaxonVersion: String by project
val kotlinLoggingVersion: String by project
val skrapeItVersion: String by project
val jsoupVersion: String by project
val devWebApiServer: String by project
val devWebApiServerVersion: String by project
//Build File Configuration
plugins {
java
kotlin("multiplatform") version "1.3.72"
}
group = "com.app"
version = "1.0-SNAPSHOT"
repositories {
mavenCentral()
jcenter()
jcenter {
url = uri("https://kotlin.bintray.com/kotlin-js-wrappers")
}
maven {
url = uri("https://jitpack.io")
}
}
//Multiplatform Configuration
kotlin {
jvm {
compilations {
val main = getByName("main")
tasks {
register<Jar>("buildFatJar") {
group = "application"
manifest {
attributes["Implementation-Title"] = "Gradle Jar File Example"
attributes["Implementation-Version"] = archiveVersion
attributes["Main-Class"] = "com.app.BackendAppKt"
}
archiveBaseName.set("${project.name}-fat")
from(main.output.classesDirs, main.compileDependencyFiles)
with(jar.get() as CopySpec)
}
register<JavaExec>("runLocally") {
group = "application"
setMain("com.app.BackendAppKt")
classpath = main.output.classesDirs
classpath += main.compileDependencyFiles
}
}
}
}
js {
browser { EXCLUDED FOR LENGTH }
}
sourceSets { EXCLUDED FOR LENGTH }
}