Stackoverflow error when uses Apache Jmeter Core - spring-boot

Question

I am new in Gradle. I am using my gradle with kotlin dsl script. When I execute using
gradle bootRun
Then it throw StackoverFlow error for log4J
Exception in thread "main" java.lang.StackOverflowError at
java.lang.reflect.InvocationTargetException.(InvocationTargetException.java:72)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.apache.logging.log4j.util.StackLocator.getCallerClass(StackLocator.java:110)
at
org.apache.logging.log4j.util.StackLocator.getCallerClass(StackLocator.java:123)
at
org.apache.logging.log4j.util.StackLocatorUtil.getCallerClass(StackLocatorUtil.java:55)
As Soon as I comment the implementation( "org.apache.jmeter:ApacheJMeter_core:5.0") from the build script, it doesn't throw any Error, what I should do? Please help.
Build.Gradle.kts
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
plugins {
java
kotlin("jvm") version "1.3.11"
"kotlin-spring"
id("org.springframework.boot") version "2.1.1.RELEASE"
}
group = "org.kayd"
version = "1.0-DEV"
repositories {
mavenCentral()
}
dependencies {
implementation(kotlin("stdlib-jdk8"))
implementation(kotlin("reflect"))
implementation("org.apache.commons:commons-collections4:4.2")
implementation("org.springframework.boot:spring-boot-starter:2.1.1.RELEASE")
implementation( "org.apache.jmeter:ApacheJMeter_core:5.0")
// implementation("org.apache.jmeter:ApacheJMeter_java:5.0")
// implementation( "org.apache.jmeter:ApacheJMeter_http:5.0")
// implementation( "org.antlr:antlr:3.1.3")
// implementation( "org.json:json:20180813")
testCompile("junit", "junit", "4.12")
}
configure<JavaPluginConvention> {
sourceCompatibility = JavaVersion.VERSION_1_8
}
tasks.withType<KotlinCompile> {
kotlinOptions.jvmTarget = "1.8"
}
Main Fun file
package org.kayd
import org.springframework.boot.Banner
import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.context.properties.EnableConfigurationProperties
import org.springframework.boot.runApplication
#EnableConfigurationProperties
#SpringBootApplication
open class StartApplication
fun main(args: Array<String>) {
runApplication<StartApplication>(*args) {
setBannerMode(Banner.Mode.OFF)
setLogStartupInfo(true)
}
}

Answer 1

If you list your project dependencies you will see that
org.apache.jmeter:ApacheJMeter_core:5.0 has transitive dependency on commons-collections:commons-collections:3.2.2
which in its turn clashes with your org.apache.commons:commons-collections4:4.2
So you're suffering from a form of a Jar Hell. You cannot reliably use 2 different versions of a same JAR in one application as the order of loaded classes in the CLASSPATH is a big question mark. Theoretically you can control this using a custom classloader however it might be an overkill for your project.
The easiest would be just removing your implementation("org.apache.commons:commons-collections4:4.2") dependency and re-write the impacted code to use Commons Collections 3 syntax.
Alternatively you will have to reconsider the way you're using JMeter in your application and go for one of the alternative JMeter execution options.