[MNG-5122] MavenCli com.google.inject.internal.util.ComputationException: java.lang.NoClassDefFoundError: org/apache/maven/plugin/descriptor/MojoDescriptor

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 3.0.3
• Component/s: Class Loading, Embedding

Environment

Apache Maven 2.2.1 (r801777; 2009-08-06 21:16:01+0200)
Java version: 1.6.0_16
Java home: C:\Programme\Java\jdk1.6.0_16\jre
Default locale: de_DE, platform encoding: Cp1252
OS name: "windows 7" version: "6.1" arch: "x86" Family: "windows"

• Assignee: Unassigned
• Reporter: KG
• Created: 22/Jun/11 11:09
• Updated: 13/Nov/12 17:55
• Resolved: 13/Nov/12 17:55

Description

I want to use MavenCli in order to use Maven programatically within an installer (IzPack).

pom.xml (see attachment).

I'm using

<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-embedder</artifactId>
<version>3.0-beta-3</version>
</dependency>

Note that all dependencies are unzipped and part of the final installer jar (target/product-installer.jar). The components.xml contains all available components.xml files (merged by plexus-component-metadata plugin).

how to build: mvn -X clean install > build.log

At runtime (java -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address="8000" -jar target/wigeoweb-installer.jar) following code is executed:

MavenCli cli = new MavenCli();
int result = cli.doMain(new String[]

{"compile -X"}

,
"C:/Develop/Experiments/webservercontext-maven-plugin", //Own plugin
System.out, System.out);
System.out.println("result: " + result);

It terminates with exception while initializing plexus container (there's the place where the debugger exits):

Exception:

Listening for transport dt_socket at address: 8000
[ERROR] Error executing Maven.
[ERROR] com.google.inject.internal.util.ComputationException: java.lang.NoClassDefFoundError: org/apache/maven/plugin/descriptor/MojoDescriptor
[ERROR] Caused by: java.lang.NoClassDefFoundError: org/apache/maven/plugin/descriptor/MojoDescriptor
[ERROR] Caused by: org/apache/maven/plugin/descriptor/MojoDescriptor
[ERROR] Caused by: org.apache.maven.plugin.descriptor.MojoDescriptor

Source Code:

private void container( CliRequest cliRequest )
throws Exception

{ if ( cliRequest.classWorld == null ) { cliRequest.classWorld = new ClassWorld( "plexus.core", Thread.currentThread().getContextClassLoader() ); }

DefaultPlexusContainer container = this.container;

if ( container == null )

{ ContainerConfiguration cc = new DefaultContainerConfiguration() .setClassWorld( cliRequest.classWorld ) .setName( "maven" ); *container = new DefaultPlexusContainer( cc ); //<<<<<<<<<<<<<<<<<<<<<< EXCEPTION THROWN* container.setLoggerManager( new MavenLoggerManager( logger ) ); container.getLoggerManager().setThresholds( cliRequest.request.getLoggingLevel() ); customizeContainer( container ); if ( cliRequest.classWorld == classWorld ) { this.container = container; }

}

maven = container.lookup( Maven.class );

executionRequestPopulator = container.lookup( MavenExecutionRequestPopulator.class );

modelProcessor = createModelProcessor( container );

settingsBuilder = container.lookup( SettingsBuilder.class );

dispatcher = (DefaultSecDispatcher) container.lookup( SecDispatcher.class, "maven" );
}

thank you
K. Golbang