Duplicate class errors with Clover and jaxws-maven plugin
Symptoms
When integrating clover into your build, the build fails with duplicate class errors:
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Compilation failure
/Users/amyers/Applications/clover/mavenbook-examples-1-SNAPSHOT/ch05-simple-web/simple-webapp/target/clover/src-instrumented/com/atlassian/jira/soap/client/PingStringInput.java:[35,7] duplicate class: com.atlassian.jira.soap.client.PingStringInput
/Users/amyers/Applications/clover/mavenbook-examples-1-SNAPSHOT/ch05-simple-web/simple-webapp/target/jaxws/wsimport/java/com/atlassian/jira/soap/client/PingServicePortType.java:[23,7] duplicate class: com.atlassian.jira.soap.client.PingServicePortType
/Users/amyers/Applications/clover/mavenbook-examples-1-SNAPSHOT/ch05-simple-web/simple-webapp/target/clover/src-instrumented/com/atlassian/jira/soap/client/ObjectFactory.java:[22,7] duplicate class: com.atlassian.jira.soap.client.ObjectFactory
/Users/amyers/Applications/clover/mavenbook-examples-1-SNAPSHOT/ch05-simple-web/simple-webapp/target/clover/src-instrumented/com/atlassian/jira/soap/client/PingService.java:[21,7] duplicate class: com.atlassian.jira.soap.client.PingService
/Users/amyers/Applications/clover/mavenbook-examples-1-SNAPSHOT/ch05-simple-web/simple-webapp/target/jaxws/wsimport/java/com/atlassian/jira/soap/client/package-info.java:[1,0] package com.atlassian.jira.soap.client has already been annotated
Cause
The jaxws-maven-plugin adds the output directory for the generated sources to the compile source roots. Clover changes the ${project.build.sourceDirectory} to target/clover/src-instrumented when it performs the instrumentation, thus maven ends up having both the original generated code and the instrumented code on the compile path.
Resolution
Configure the jaxws-maven-plugin to use ${project.build.sourceDirectory} as the <sourceDestDirectory>.
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>jaxws-maven-plugin</artifactId>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>wsimport</goal>
</goals>
</execution>
</executions>
<configuration>
<packageName>com.atlassian.example.wsdl.client</packageName>
<sourceDestDir>${project.build.sourceDirectory}</sourceDestDir>
</configuration>
</plugin>
Last modified on May 17, 2013
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