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java.lang.NoClassDefFoundError when adding Maven dependency

Josep Burgaya
Josep Burgaya July 12, 2019

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?

Answer
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2 answers

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Josep Burgaya
Josep Burgaya July 12, 2019

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;
    }
}
View More Comments
Peng Xiao
Peng Xiao February 4, 2021

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

Like
Josep Burgaya
Josep Burgaya February 5, 2021

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`.

Like
Reply
0 votes
Josep Burgaya
Josep Burgaya July 12, 2019

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>
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