CODEWITHSUNDEEP
javamavenspring-bootdependencies
LeckerMaedschen
LeckerMaedschen

Reputation: 161

Maven - ClassNotFoundException: org.apache.commons.lang.StringUtils

Can someone please explain what this error is and when it occurs?

Downloading: file://C:/.../org/springframework/boot/spring-boot-dependencies/1.4.0.RELEASE/spring-boot-dependencies-1.4.0.RELEASE.pom
Exception in thread "pool-11-thread-1" ---------------------------------------------------
constituent[0]: file:/C:/Program%20Files/NetBeans%208.2/java/maven/lib/aether-api-1.13.1.jar
constituent[1]: file:/C:/Program%20Files/NetBeans%208.2/java/maven
constituent[18]: file:/C:/Program%20Files/NetBeans%208.2/java/maven/lib/plexus-component-annotations-1.5.5.jar
constituent[19]: file:/C:/Program%20Files/NetBeans%208.2/java/maven/lib/plexus-interpolation-1.14.jarjava.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
    at org.apache.maven.wagon.providers.file.FileWagon.resolveDestinationPath(FileWagon.java:206)
    at org.apache.maven.wagon.providers.file.FileWagon.resourceExists(FileWagon.java:265)
    at org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(WagonRepositoryConnector.java:577)
    at org.sonatype.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:60)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.StringUtils
    at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
    at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
    at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
    ... 7 more

Why maven can not find org.apache.commons.lang.StringUtils. Looking into local repository I'm able to find org\apache\maven\wagon\wagon-providers\2.7\... and org\apache\commons\parent\..., org\apache\commons\lang\..., org\apache\commons\exec\..., org\apache\commons\compress\..., org\apache\commons\pool2\.... I can not figure out when this problem occurs, so I'm not able to resolve this problem...

Upvotes: 2

Views: 4636

Answers (2)

LeckerMaedschen
LeckerMaedschen

Reputation: 161

Fixed! I have downloaded manually maven 3.5 under https://maven.apache.org/download.cgi and copied file commons-lang3-3.5.jar to C:\Program Files\NetBeans 8.2\java\maven\lib\. I'm using NetBeans 8.2 with Maven as Plug-In.

Upvotes: 3

Danylo Zatorsky
Danylo Zatorsky

Reputation: 6124

Try adding this dependency in your pom.xml:

<dependency>
    <groupId>commons-lang</groupId>
    <artifactId>commons-lang</artifactId>
    <version>2.6</version>
</dependency>

Upvotes: 0

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