AEM 6.4 mockito, junits not working - getting java.lang.NoClassDefFoundError | Community
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karanmahi
February 6, 2019

AEM 6.4 mockito, junits not working - getting java.lang.NoClassDefFoundError

  • February 6, 2019
  • 3 replies
  • 12265 views

After 6.4 upgrade, junits giving below mentioned error (Using Mockito for junits). This used to work in AEM 6.3. We looked at the packages inside Uber-jar-6.4.3-apis.jar (inside maven dependencies of eclipse ), and noticed that package "org.apache.sling.api.wrappers" is showing empty? ObjectConverter class which is not found is being referred from this package. Since the package is not present, we won't find this class. Is there any way we can fix it?

java.lang.NoClassDefFoundError: org/apache/sling/api/wrappers/impl/ObjectConverter

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    3 replies

    Gaurav-Behl
    Gaurav-Behl
    February 6, 2019

    I believe this wrapper package implementation gets resolved via other transitive dependencies

    check this  --

    /**
    * This is copied from org.apache.sling.api.wrappers.impl.ObjectConverter
    * to avoid dependency to latest Sling API.
    * This can be removed when Sling API 2.17.0 or higher is referenced.
    */

    sling-org-apache-sling-fsresource/ObjectConverter.java at master · apache/sling-org-apache-sling-fsresource · GitHub

    K
    karanmahiAuthor
    February 7, 2019

    gauravb10066713 - What changes do you suggest to fix this, because our junits are looking for ObjectConverter in this package org/apache/sling/api/wrappers/impl/ObjectConverter through transitive dependency.

    K
    karanmahiAuthor
    February 7, 2019

    You would need to update/fix your pom.xml per requirement with specific library versions and specific scope. It also depends on what maven archetype do you currently use and other osgi/scr annotation versions.

    You may want to check WKND tutorial poms and take a reference about what versions are included. Alternatively, you may share your project code/pom.xmls so that I could check it.


    We are on 6.4.3 and using 6.4.3 uber jar. And we are using the following dependencies in our POM. Can you please review to see if we are using any incorrect version or do you have any working example of Junits in 6.4?

        <!-- ====================================================================== -->

        <!-- D E P E N D E N C I E S -->

        <!-- ====================================================================== -->

        <dependencyManagement>

            <dependencies>

                <!-- OSGi Dependencies -->

                <dependency>

                    <groupId>org.apache.felix</groupId>

                    <artifactId>org.apache.felix.scr</artifactId>

                    <version>1.6.0</version>

                    <scope>provided</scope>

                </dependency>

                <dependency>

                    <groupId>org.apache.felix</groupId>

                    <artifactId>org.apache.felix.scr.annotations</artifactId>

                    <version>1.9.6</version>

                    <scope>provided</scope>

                </dependency>

                 <!-- OSGi Dependencies -->

                <dependency>

                    <groupId>org.osgi</groupId>

                    <artifactId>osgi.core</artifactId>

                    <version>6.0.0</version>

                    <scope>provided</scope>

                </dependency>

                <dependency>

                    <groupId>org.osgi</groupId>

                    <artifactId>osgi.cmpn</artifactId>

                    <version>6.0.0</version>

                    <scope>provided</scope>

                </dependency>

                <dependency>

                    <groupId>org.osgi</groupId>

                    <artifactId>osgi.annotation</artifactId>

                    <version>6.0.1</version>

                    <scope>provided</scope>

                </dependency>

                <dependency>

                    <groupId>javax.inject</groupId>

                    <artifactId>javax.inject</artifactId>

                    <version>1</version>

                </dependency>

                <!-- Logging Dependencies -->

                <dependency>

                    <groupId>org.slf4j</groupId>

                    <artifactId>slf4j-api</artifactId>

                    <version>1.7.21</version>

                    <scope>provided</scope>

                </dependency>

                <dependency>

                    <groupId>com.adobe.aem</groupId>

                    <artifactId>uber-jar</artifactId>

                    <version>6.4.3</version>

                    <classifier>apis</classifier>

                    <scope>provided</scope>

                </dependency>

                <dependency>

                    <groupId>com.adobe.cq</groupId>

                    <artifactId>core.wcm.components.all</artifactId>

                    <type>zip</type>

                    <version>2.2.2</version>

                </dependency>

                 <!-- Apache Sling Dependencies -->

                <dependency>

                    <groupId>org.apache.sling</groupId>

                    <artifactId>org.apache.sling.models.api</artifactId>

                    <version>1.3.6</version>

                    <scope>provided</scope>

                </dependency>

                 <!-- Servlet API -->

                <dependency>

                    <groupId>javax.servlet</groupId>

                    <artifactId>javax.servlet-api</artifactId>

                    <version>3.1.0</version>

                    <scope>provided</scope>

                </dependency>

                <dependency>

                    <groupId>javax.servlet.jsp</groupId>

                    <artifactId>jsp-api</artifactId>

                    <version>2.1</version>

                    <scope>provided</scope>

                </dependency>

                <!-- JCR -->

                <dependency>

                    <groupId>javax.jcr</groupId>

                    <artifactId>jcr</artifactId>

                    <version>2.0</version>

                    <scope>provided</scope>

                </dependency>

                 <!-- Taglibs -->

                <dependency>

                    <groupId>com.day.cq.wcm</groupId>

                    <artifactId>cq-wcm-taglib</artifactId>

                    <version>5.7.4</version>

                    <scope>provided</scope>

                </dependency>

                <!-- Testing -->

                <dependency>

                    <groupId>junit</groupId>

                    <artifactId>junit</artifactId>

                    <version>4.12</version>

                    <scope>test</scope>

                </dependency>

                <dependency>

                    <groupId>org.slf4j</groupId>

                    <artifactId>slf4j-simple</artifactId>

                    <version>1.7.25</version>

                    <scope>test</scope>

                </dependency>

                <dependency>

                    <groupId>org.mockito</groupId>

                    <artifactId>mockito-core</artifactId>

                    <version>2.23.4</version>

                    <scope>test</scope>

                </dependency>

                <dependency>

                    <groupId>junit-addons</groupId>

                    <artifactId>junit-addons</artifactId>

                    <version>1.4</version>

                    <scope>test</scope>

                </dependency>

                <dependency>

                    <groupId>org.apache.sling</groupId>

                    <artifactId>org.apache.sling.testing.sling-mock.junit4</artifactId>

                    <version>2.3.4</version>

                    <scope>test</scope>

                </dependency>

               

                <dependency>

                    <groupId>uk.org.lidalia</groupId>

                    <artifactId>slf4j-test</artifactId>

                    <version>1.0.1</version>

                    <scope>test</scope>

                </dependency>

                <dependency>

            <groupId>org.powermock</groupId>

            <artifactId>powermock-module-junit4</artifactId>

            <version>1.6.4</version>

            <scope>test</scope>

         </dependency>

            <dependency>

           <groupId>org.powermock</groupId>

           <artifactId>powermock-api-mockito</artifactId>

           <version>1.6.4</version>

           <scope>test</scope>

       </dependency>

                <dependency>

                    <groupId>com.google.code.gson</groupId>

                    <artifactId>gson</artifactId>

                    <version>2.3.1</version>

                    <scope>provided</scope>

                </dependency>

               <!--   -->

                <!-- Handlebars dependency starts here. -->

                <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->

                <dependency>

                    <groupId>com.fasterxml.jackson.core</groupId>

                    <artifactId>jackson-core</artifactId>

                    <version>2.9.8</version>

                    <scope>provided</scope>

                </dependency>

                <dependency>

                    <groupId>com.fasterxml.jackson.core</groupId>

                    <artifactId>jackson-databind</artifactId>

                    <version>2.9.8</version>

                    <scope>provided</scope>

               </dependency>

                <!-- https://mvnrepository.com/artifact/org.abego.treelayout/org.abego.treelayout.core -->

                <dependency>

                    <groupId>org.abego.treelayout</groupId>

                    <artifactId>org.abego.treelayout.core</artifactId>

                    <version>1.0.3</version>

                    <scope>provided</scope>

                </dependency>

                <dependency>

                    <groupId>commons-io</groupId>

                    <artifactId>commons-io</artifactId>

                    <version>2.5</version>

                    <scope>provided</scope>

                </dependency>

                <!-- https://mvnrepository.com/artifact/org.mozilla/rhino -->

                <dependency>

                    <groupId>org.mozilla</groupId>

                    <artifactId>rhino</artifactId>

                    <version>1.7R4</version>

                    <scope>compile</scope>

                </dependency>

                <dependency>

                    <groupId>com.github.jknack</groupId>

                    <artifactId>handlebars</artifactId>

                    <version>4.0.6</version>

                    <scope>compile</scope>

                </dependency>

                <!-- https://mvnrepository.com/artifact/org.apache.servicemix.bundles/org.apache.servicemix.bundles.freemarker -->

                <dependency>

                    <groupId>org.freemarker</groupId>

                    <artifactId>freemarker</artifactId>

                    <version>2.3.23</version>

                    <scope>provided</scope>

                </dependency>

                <!-- https://mvnrepository.com/artifact/org.antlr/antlr4-runtime -->

                <dependency>

                    <groupId>org.antlr</groupId>

                    <artifactId>antlr4-runtime</artifactId>

                    <version>4.5.1</version>

                    <scope>compile</scope>

                </dependency>

               <!-- Dependencies need to remediate -->

                <dependency>

          <groupId>io.wcm</groupId>

          <artifactId>io.wcm.sling.commons</artifactId>

          <version>0.5.0</version>

      </dependency>

       <dependency>

                  <groupId>org.apache.sling</groupId>

                  <artifactId>org.apache.sling.commons.testing</artifactId>

                  <version>2.1.2</version>

                  <scope>test</scope>

                  <exclusions>

                      <exclusion>

                          <groupId>commons-httpclient</groupId>

                          <artifactId>commons-httpclient</artifactId>

                      </exclusion>

                        <exclusion>

                            <groupId>rhino</groupId>

                            <artifactId>js</artifactId>

                        </exclusion>

                   </exclusions>

              </dependency>

              <dependency>

                    <groupId>io.wcm</groupId>

                    <artifactId>io.wcm.testing.aem-mock</artifactId>

                    <version>1.7.0</version>

                    <scope>provided</scope>

                    <exclusions>

                    <exclusion>  <!-- declare the exclusion here -->

                      <groupId>commons-collections</groupId>

                       <artifactId>commons-collections</artifactId>

                    </exclusion>

                  </exclusions>

                </dependency>

               <!-- Dependencies need to remediate -->

            </dependencies>

        </dependencyManagement>

    P
    prateeka1214461
    May 13, 2019

    HI,

    did you find an answer to this error?

    I am facing the same issue.

    I am upgrading from AEM 6.2 to AEM 6.5.

    java.lang.NoClassDefFoundError: org/apache/sling/api/wrappers/impl/ObjectConverter

            at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

            at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

            at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)

            at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

            at org.apache.sling.api.wrappers.ValueMapDecorator.get(ValueMapDecorator.java:56)

            at org.apache.sling.testing.resourceresolver.DeepReadModifiableValueMapDecorator.get(DeepReadModifiableValueMapDecorator.java:73)

            at org.apache.sling.testing.resourceresolver.MockValueMap.get(MockValueMap.java:87)

            at org.apache.sling.testing.resourceresolver.MockResource.getResourceType(MockResource.java:71)

            at x.x.x.x.models.TestHelloWorldModel.testHelloWorld(TestHelloWorldModel.java:44)

    Regards,

    Prateek

    J
    juan-ayala
    May 28, 2019

    Try adding this to your POM (notice its scoped to test)

                <dependency>

                    <groupId>org.apache.sling</groupId>

                    <artifactId>org.apache.sling.api</artifactId>

                    <version>2.18.4</version>

                    <scope>test</scope>

                </dependency>

      A
      alagarragavan
      April 11, 2020

      It worked ! Thanks

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