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ODL controller build error: java.lang.ClassNotFoundException: org.apache.commons.lang.StringUtils

asked 2015-05-20 03:30:34 -0700

eya.get gravatar image

Dear all,

I wanted to contribute on the development of the odl controller and I have cloned only the controller repo using ssh. But I couldn't manage to handle the error while building it with maven on Ubuntu 14.04 CLI. May Java version is 1.7.0_79 and maven version 3.3.3. Build fails on odl-model-project. Please have a look on the full error trace bellow:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-archetype-plugin:2.2:jar (default-jar) on project odl-model-project: Execution default-jar of goal org.apache.maven.plugins:maven-archetype-plugin:2.2:jar failed: A required class was missing while executing org.apache.maven.plugins:maven-archetype-plugin:2.2:jar: org/apache/commons/lang/StringUtils

With -X debugging, the trace is as follows:

at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo( ... 21 more Caused by: java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils at org.apache.velocity.runtime.resource.ResourceManagerImpl.initialize( at org.apache.velocity.runtime.RuntimeInstance.initializeResourceManager( at org.apache.velocity.runtime.RuntimeInstance.init( at at org.codehaus.plexus.velocity.DefaultVelocityComponent.initialize( at org.eclipse.sisu.plexus.PlexusLifecycleManager.initialize( at org.eclipse.sisu.plexus.PlexusLifecycleManager.activate( at org.eclipse.sisu.bean.BeanScheduler$Pending.activate( at org.eclipse.sisu.bean.BeanScheduler$Activator.onProvision( at$Provision.provision( at at at at$2$ at at$2.get( at$1.get( at org.eclipse.sisu.inject.LazyBeanEntry.getValue( at org.eclipse.sisu.plexus.LazyPlexusBean.getValue( at org.codehaus.plexus.DefaultPlexusContainer.lookup( at org.codehaus.plexus.DefaultPlexusContainer.lookup( at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfiguredMojo( at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo( ... 21 more Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.StringUtils at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass( at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass( at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass( at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass( ... 44 more

Could you please point me out how to solve this error/bug? Please let me know if there is a workaround on this error.

Thank you,

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I have the same problem. I followed all the instructions on the wiki for setting up the development environment on Ubuntu 14.04, but somehow there is a problem with maven/java. In fact, when I just run "mvn archetype:generate" I get the java.lang.NoClassDefFound exception.

Chris Lauwers ( 2015-05-20 14:21:14 -0700 )edit

I figured out that the problem is related to maven-archetype-plugin. It is defined on pom.xml but it is not getting downloaded while building the project. I don't know why.

eya.get ( 2015-05-20 14:27:49 -0700 )edit

Hi, I am facing a similar problem. Can you share if you moved ahead with this error. I found a link to a probable solution->

sidhant13 ( 2015-05-21 00:15:29 -0700 )edit

Thanks sidhant13 for your input. Adding the following dependency in file ~/.m2/repository/org/apache/maven/plugins/maven-archetype-plugin/2.2/maven-archetype-plugin-2.2.pom solves the problem for me. <dependency> <groupid>commons-lang</groupid> <artifactid>commons-lang</artifactid> <version>2.3</version> </dependency> It might not be a permanent solution though.

eya.get ( 2015-05-21 11:01:39 -0700 )edit

4 answers

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answered 2015-05-20 03:54:56 -0700

Check this wiki: . This may help you.

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Hi Subhash, thank you for the reply. I followed all the steps, but it doesn't work. There is no problem with the integration project. The problem is on the controller project. I have been trying to build only the controller repo, i.e., git clone JDK and Maven are correctly installed. But build fails at odl-model-project

eya.get ( 2015-05-20 04:12:39 -0700 )edit

answered 2015-05-21 10:11:09 -0700

eya.get gravatar image

updated 2015-05-23 21:59:16 -0700

Adding the following dependency in file ~/.m2/repository/org/apache/maven/plugins/maven-archetype-plugin/2.2/maven-archetype-plugin-2.2.pom solves the problem for me.

<dependency> <groupid>commons-lang</groupid> <artifactid>commons-lang</artifactid> <version>2.3</version>

It might not be a permanent solution though.

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Thanks. It worked but guess the comment here is formatted such that inline Uppercase characters are converted to lowercase, and in pasting the above dependency to pom file gives a null dependency error. So i in groupid and artifactid have to be in uppercase.

sidhant13 ( 2015-05-22 05:34:46 -0700 )edit

you are right, but I don't know why this editor converts all inline Uppercase characters to lower case.

eya.get ( 2015-05-23 21:57:44 -0700 )edit

It worked fine also for me! Thanks

mattedallo ( 2015-06-03 06:18:39 -0700 )edit

answered 2015-05-21 15:10:12 -0700

I had a similar problem trying to run the MD-SAL example described in

I got the StringUtils exception when running the "mvn archetype:generate" command shown in the example. I finally got this to work as follows:

  1. delete the entire ~/.m2/repository
  2. delete ~/.m2/settings.xml
  3. run the mvn archetype:generate command (with the arguments listed on the wiki). This now succeeds without problems
  4. create ~/.m2/settings.xml based on the instructions from the "setting up your dev environment" section on the wiki
  5. run "mvn clean install"

From this, I surmise that there might be a discrepancy between the repos in and

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This worked fine for me as well. Thanks.

pbraun ( 2015-06-05 05:12:00 -0700 )edit

answered 2015-05-22 17:06:15 -0700

Bruno Lopes gravatar image

You can try the solution of this post . This worked with me.

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Asked: 2015-05-20 03:30:34 -0700

Seen: 1,625 times

Last updated: May 23 '15