Proguard configuration on a Enterprise Java Application - maven

Question

I'm trying to use proguard in a Maven project this is a obfuscate plugin, when I run it I have an error:
Failed to execute goal com.pyx4me:proguard-maven-plugin:2.0.4:proguard (default) on project MavenEnterpriseApp-ear: Obfuscation failed (result=1) -> [Help 1]
when I run maven with -e or -X I have:
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.pyx4me:proguard-maven-plugin:2.0.4:proguard (default) on project MavenEnterpriseApp-ear: Obfuscation failed (result=1)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
My plugin configuration is:
<plugin>
<groupId>com.pyx4me</groupId>
<artifactId>proguard-maven-plugin</artifactId>
<version>2.0.4</version>
<executions>
<execution>
<phase>prepare-package</phase>
<goals>
<goal>proguard</goal>
</goals>
</execution>
</executions>
<configuration>
<obfuscate>true</obfuscate>
<includeDependency>false</includeDependency>
<injar>${project.artifactId}-v${project.version}.ear</injar>
<outjar>${project.artifactId}-v${project.version}-obf.ear</outjar>
<outputDirectory>${project.build.directory}</outputDirectory>
<maxMemory>256m</maxMemory>
</configuration>
</plugin>
As you can see I'm trying to ofuscate the ear. In the official page:
injar: Specifies the input jar name (or wars, ears, zips) of the
application to be processed. You may specify a classes directory e.g.
'classes'. This way plugin will processed the classes instead of jar.
You would need to bind the execution to phase 'compile' or
'process-classes' in this case.
The project is an a Maven Enterise Application project, basically I have 2 sub project one with JPA and EJB3 resources and the other is an a web project with jsf the structure is. When I run Maven I obtain an ear, in this I have 2 binaries a jar and a war. I have three
questions:
First) In what pom I suppose to insert it? now I'm using the pom into the EAR project as you can see:
Second)I can obfuscatean an ear?
Third) If the second is false: how can I obfuscate specificlly the ears? I'm trying to specify the jars but I recive the same error ever:
Failed to execute goal com.pyx4me:proguard-maven-plugin:2.0.4:proguard (default) on project MavenEnterpriseApp-ear: Obfuscation failed (result=1) -> [Help 1]

Answer 1

Try to change phase of proguard from "prepare-package" into "process-classes", change injar option into "classes", and let me know if it does not work.
HTH.