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java.lang.NoClassDefFoundError when adding Maven dependency

Hi everyone,

I am experimenting with a concept of a plugin and when I add the JGit library to the project the tests produce execution errors.

I have created the following Minimal, Reproducible Error to showcase this.

The output of executing "atlas-package":

[ERROR] Failed to execute goal com.atlassian.maven.plugins:jira-maven-plugin:8.0.2:unit-test (default-unit-test) on project testPlugin: There are test failures.
[ERROR]
[ERROR] Please refer to /home/usuari/testPlugin/target/surefire-reports for the individual test results.
[ERROR] Please refer to dump files (if any exist) [date].dump, [date]-jvmRun[N].dump and [date].dumpstream.
[ERROR] There was an error in the forked process
[ERROR] testPlugin/api/MyPluginComponent
[ERROR] org.apache.maven.surefire.booter.SurefireBooterForkException: There was an error in the forked process
[ERROR] testPlugin/api/MyPluginComponent
[ERROR] at org.apache.maven.plugin.surefire.booterclient.ForkStarter.fork(ForkStarter.java:656)
[ERROR] at org.apache.maven.plugin.surefire.booterclient.ForkStarter.run(ForkStarter.java:282)
[ERROR] at org.apache.maven.plugin.surefire.booterclient.ForkStarter.run(ForkStarter.java:245)
[ERROR] at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeProvider(AbstractSurefireMojo.java:1183)
[ERROR] at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAfterPreconditionsChecked(AbstractSurefireMojo.java:1011)
[ERROR] at org.apache.maven.plugin.surefire.AbstractSurefireMojo.execute(AbstractSurefireMojo.java:857)
[ERROR] at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
[ERROR] at org.twdata.maven.mojoexecutor.MojoExecutor.executeMojo(MojoExecutor.java:119)
[ERROR] at com.atlassian.maven.plugins.amps.util.MojoUtils.execute(MojoUtils.java:36)
[ERROR] at com.atlassian.maven.plugins.amps.util.MojoUtils.executeWithMergedConfig(MojoUtils.java:66)
[ERROR] at com.atlassian.maven.plugins.amps.MavenGoals.runUnitTests(MavenGoals.java:655)
[ERROR] at com.atlassian.maven.plugins.amps.UnitTestMojo.execute(UnitTestMojo.java:56)
[ERROR] at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.executeForkedExecutions(MojoExecutor.java:353)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:198)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146)
[ERROR] at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
[ERROR] at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
[ERROR] at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
[ERROR] at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
[ERROR] at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)
[ERROR] at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
[ERROR] at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
[ERROR] at org.apache.maven.cli.MavenCli.execute(MavenCli.java:954)
[ERROR] at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
[ERROR] at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERROR] at java.lang.reflect.Method.invoke(Method.java:498)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)

The dump in sure-fire reports is as follow:

java.lang.NoClassDefFoundError: testPlugin/api/MyPluginComponent
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at org.apache.maven.surefire.util.ReflectionUtils.tryGetMethod(ReflectionUtils.java:60)
at org.apache.maven.surefire.common.junit3.JUnit3TestChecker.isSuiteOnly(JUnit3TestChecker.java:66)
at org.apache.maven.surefire.common.junit3.JUnit3TestChecker.isValidJUnit3Test(JUnit3TestChecker.java:61)
at org.apache.maven.surefire.common.junit3.JUnit3TestChecker.accept(JUnit3TestChecker.java:56)
at org.apache.maven.surefire.common.junit4.JUnit4TestChecker.accept(JUnit4TestChecker.java:53)
at org.apache.maven.surefire.util.DefaultScanResult.applyFilter(DefaultScanResult.java:102)
at org.apache.maven.surefire.junit4.JUnit4Provider.scanClassPath(JUnit4Provider.java:309)
at org.apache.maven.surefire.junit4.JUnit4Provider.setTestsToRun(JUnit4Provider.java:189)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:132)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
Caused by: java.lang.ClassNotFoundException: testPlugin.api.MyPluginComponent
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 18 more

Here is the src/atlassian-plugin.xml:

<atlassian-plugin key="${atlassian.plugin.key}" name="${project.name}" plugins-version="2"> 
<plugin-info>
<description>${project.description}</description>
<version>${project.version}</version>
<vendor name="${project.organization.name}" url="${project.organization.url}"/>
<param name="plugin-icon">images/pluginIcon.png</param>
<param name="plugin-logo">images/pluginLogo.png</param>
</plugin-info>
<!-- add our i18n resource -->
<resource type="i18n" name="i18n" location="testPlugin"/>
<!-- add our web resources -->
<web-resource key="testPlugin-resources" name="testPlugin Web Resources">
<dependency>com.atlassian.auiplugin:ajs</dependency>
<resource type="download" name="testPlugin.css" location="/css/testPlugin.css"/>
<resource type="download" name="testPlugin.js" location="/js/testPlugin.js"/>
<resource type="download" name="images/" location="/images"/>
<context>testPlugin</context>
</web-resource>
<webwork1 key="my-webwork-module" name="My Webwork Module" i18n-name-key="my-webwork-module.name">
<description key="my-webwork-module.description">The My Webwork Module Plugin</description>
<actions>
<action name="testPlugin.jira.webwork.MyWebworkModuleAction" alias="MyWebworkModuleAction">
<view name="success">/templates/my-webwork-module/success.vm</view>
<view name="input">/templates/my-webwork-module/input.vm</view>
<view name="error">/templates/my-webwork-module/error.vm</view>
</action>
</actions>
</webwork1>
</atlassian-plugin>

 And lastly the test/../atlassian-plugin.xml:

<atlassian-plugin key="${project.groupId}.${project.artifactId}-tests" name="${project.name}" plugins-version="2">
<plugin-info>
<description>${project.description}</description>
<version>${project.version}</version>
<vendor name="${project.organization.name}" url="${project.organization.url}" />
</plugin-info>

<!-- from our base plugin -->
<component-import key="myComponent" interface="testPlugin.api.MyPluginComponent"/>

<!-- from the product container -->
<component-import key="applicationProperties" interface="com.atlassian.sal.api.ApplicationProperties" />

</atlassian-plugin>

 

(POM.xml file in the comments)

 

Any ideas on how to solve this?

2 answers

POM.xml

 

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>testPlugin</groupId>
<artifactId>testPlugin</artifactId>
<version>1.0.0-SNAPSHOT</version>
<organization>
<name>Example Company</name>
<url>http://www.example.com/</url>
</organization>
<name>testPlugin</name>
<description>This is the testPlugin:testPlugin plugin for Atlassian JIRA.</description>
<packaging>atlassian-plugin</packaging>
<dependencies>
<dependency>
<groupId>com.atlassian.jira</groupId>
<artifactId>jira-api</artifactId>
<version>${jira.version}</version>
<scope>provided</scope>
</dependency>
<!-- Add dependency on jira-core if you want access to JIRA implementation classes as well as the sanctioned API. -->
<!-- This is not normally recommended, but may be required eg when migrating a plugin originally developed against JIRA 4.x -->
<dependency>
<groupId>com.atlassian.jira</groupId>
<artifactId>jira-core</artifactId>
<version>${jira.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.atlassian.plugin</groupId>
<artifactId>atlassian-spring-scanner-annotation</artifactId>
<version>${atlassian.spring.scanner.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.atlassian.plugin</groupId>
<artifactId>atlassian-spring-scanner-runtime</artifactId>
<version>${atlassian.spring.scanner.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
<scope>provided</scope>
</dependency>
<!-- WIRED TEST RUNNER DEPENDENCIES -->
<dependency>
<groupId>com.atlassian.plugins</groupId>
<artifactId>atlassian-plugins-osgi-testrunner</artifactId>
<version>${plugin.testrunner.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>jsr311-api</artifactId>
<version>1.1.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.2.2-atlassian-1</version>
</dependency>
<dependency>
<groupId>org.eclipse.jgit</groupId>
<artifactId>org.eclipse.jgit</artifactId>
<version>5.4.0.201906121030-r</version>
</dependency>
<!-- Uncomment to use TestKit in your project. Details at https://bitbucket.org/atlassian/jira-testkit -->
<!-- You can read more about TestKit at https://developer.atlassian.com/display/JIRADEV/Plugin+Tutorial+-+Smarter+integration+testing+with+TestKit -->
<!--
<dependency>
<groupId>com.atlassian.jira.tests</groupId>
<artifactId>jira-testkit-client</artifactId>
<version>${testkit.version}</version>
<scope>test</scope>
</dependency>
-->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.1.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.6.6</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.8.5</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>com.atlassian.maven.plugins</groupId>
<artifactId>jira-maven-plugin</artifactId>
<version>${amps.version}</version>
<extensions>true</extensions>
<configuration>
<productVersion>${jira.version}</productVersion>
<productDataVersion>${jira.version}</productDataVersion>
<!-- Uncomment to install TestKit backdoor in JIRA. -->
<!--
<pluginArtifacts>
<pluginArtifact>
<groupId>com.atlassian.jira.tests</groupId>
<artifactId>jira-testkit-plugin</artifactId>
<version>${testkit.version}</version>
</pluginArtifact>
</pluginArtifacts>
-->
<enableQuickReload>true</enableQuickReload>
<!-- See here for an explanation of default instructions: -->
<!-- https://developer.atlassian.com/docs/advanced-topics/configuration-of-instructions-in-atlassian-plugins -->
<instructions>
<Atlassian-Plugin-Key>${atlassian.plugin.key}</Atlassian-Plugin-Key>
<!-- Add package to export here -->
<Export-Package>testPlugin.api,</Export-Package>
<!-- Add package import here -->
<Import-Package>org.springframework.osgi.*;resolution:="optional", org.eclipse.gemini.blueprint.*;resolution:="optional", *</Import-Package>
<!-- Ensure plugin is spring powered -->
<Spring-Context>*</Spring-Context>
</instructions>
</configuration>
</plugin>
<plugin>
<groupId>com.atlassian.plugin</groupId>
<artifactId>atlassian-spring-scanner-maven-plugin</artifactId>
<version>${atlassian.spring.scanner.version}</version>
<executions>
<execution>
<goals>
<goal>atlassian-spring-scanner</goal>
</goals>
<phase>process-classes</phase>
</execution>
</executions>
<configuration>
<scannedDependencies>
<dependency>
<groupId>com.atlassian.plugin</groupId>
<artifactId>atlassian-spring-scanner-external-jar</artifactId>
</dependency>
</scannedDependencies>
<verbose>false</verbose>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<jira.version>8.2.2</jira.version>
<amps.version>8.0.2</amps.version>
<plugin.testrunner.version>2.0.1</plugin.testrunner.version>
<atlassian.spring.scanner.version>1.2.13</atlassian.spring.scanner.version>
<!-- This property ensures consistency between the key in atlassian-plugin.xml and the OSGi bundle's key. -->
<atlassian.plugin.key>${project.groupId}.${project.artifactId}</atlassian.plugin.key>
<!-- TestKit version 6.x for JIRA 6.x -->
<testkit.version>6.3.11</testkit.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
</project>

Webwork class

 

package testPlugin.jira.webwork;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.atlassian.jira.web.action.JiraWebActionSupport;

import org.eclipse.jgit.api.Git;
import java.io.File;


public class MyWebworkModuleAction extends JiraWebActionSupport
{
private static final Logger log = LoggerFactory.getLogger(MyWebworkModuleAction.class);

@Override
public String execute() throws Exception {
String result = super.execute();


Git.cloneRepository()
.setURI("https://github.com/eclipse/jgit.git")
.setDirectory(new File("repo"))
.call();


return result;
}
}

Hi, have you solved this issue? I am facing it now.

I actually managed to solve it but I have no recollection whatsoever of how I did it. If I manage to find the time next week I'll have a look.

I would try deleting temporary files with `atlas-clean`.

Suggest an answer

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