CODEWITHSUNDEEP
javaweblogicnoclassdeffounderror
Evandro Pomatti
Evandro Pomatti

Reputation: 15094

WebLogic NoClassDefFoundError even with <prefered-application-packages>

I am getting NoClassDefFoundError when running my code in QA server, but localy (using Eclipse) it runs just fine.

Caused by: java.lang.NoClassDefFoundError: org/apache/commons/csv/CSVFormat

I have faced this issue in another project which I fixed using the <wls:prefer-application-packages> property. I checked the EAR file and the Apache CSV .jar is present in the build, and I did set the prefered application packages properly as well.

Here is my weblogic-application.xml. Only org.apache.* should be enough but it was not working so I added the complete Apache CSV package.

<?xml version="1.0" encoding="UTF-8"?>
<wls:weblogic-application
    xmlns:wls="http://xmlns.oracle.com/weblogic/weblogic-application"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/javaee_5.xsd http://xmlns.oracle.com/weblogic/weblogic-application http://xmlns.oracle.com/weblogic/weblogic-application/1.0/weblogic-application.xsd">

    <wls:prefer-application-packages>
        <wls:package-name>org.apache.*</wls:package-name>
        <wls:package-name>org.apache.commons.*</wls:package-name>
        <wls:package-name>org.apache.commons.csv.*</wls:package-name>
    </wls:prefer-application-packages>

    <wls:prefer-application-resources>
        <wls:resource-name>org.apache.*</wls:resource-name>
    </wls:prefer-application-resources>

</wls:weblogic-application>

My EAR POM declares the compile dependency:

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-csv</artifactId>
    <version>1.4</version>
</dependency>

And the EJB module POM uses it as provided:

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-csv</artifactId>
    <version>1.4</version>
    <scope>provided</scope>
</dependency>

To be sure I checked the EAR build file generated by Maven, which we deploy into QA, and the Apache CSV jar is bundled inside de EAR file:

enter image description here

And the weblogic-application.xml file is also present under META-INF folder in the EAR file:

enter image description here

Even so I am getting NoClassDefFoundError. Any ideas?

Upvotes: 0

Views: 960

Answers (1)

Evandro Pomatti
Evandro Pomatti

Reputation: 15094

Add the <defaultLibBundleDir>lib</defaultLibBundleDir> that tells Maven to create the application.xml properly.

<plugin>
    <artifactId>maven-ear-plugin</artifactId>
    <version>2.10.1</version>
    <configuration>
        <defaultLibBundleDir>lib</defaultLibBundleDir>
        <version>5</version>
    </configuration>
</plugin>

And the application.xml is created with that information:

<?xml version="1.0" encoding="UTF-8"?>
<application xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/application_5.xsd" version="5">
  <!-- modules -->
  <library-directory>lib</library-directory>
</application>

Upvotes: 1

Related Questions