maven compilation error: duplicate classes

Question

In my maven2 project I have a directory ${basedir}/autogen that contains some autogenerated source code files produced by wsdl2java.

When r

Answer 1

All answers here where not helpful. This may be the correct answer:

Another StackOverflow user wrote:

I have found an JetBrains Team member comment stating that:

IDEA automatically excludes the build 'target' folder, providing that there are no generated sources under it, otherwise it excludes all sub-folders but the generated.

Avro by standard in a generated-sources folder. This folder it not ignored by maven ans the generated classes in there will count as duplicate. Maven will only igonre the target folder by default.

To fix add this line in the pom.xml:

 ${project.basedir}/src/main/target/resources/avro

Context:

  org.apache.avro
                avro-maven-plugin
                ${avro.version}
                
                    
                        generate-sources
                        
                            schema
                            protocol
                            idl-protocol
                        
                        
                            ${project.basedir}/src/main/target/resources/avro
                            String
                            false
                            ${project.basedir}/target/true
                            private
                        
                    
                

This will put the generated-resources folder under the target folder.