How do I resolve these maven 2 warnings? - maven-2

Question

I'm using Maven 2.2 with Grails 1.2.1. When trying to run the "integration-test" target, I get some cryptic warnings, which I can't figure out how to resolve ...
davea-mbp2:socialmediaproxy davea$ mvn integration-test
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for socialmediaproxy:socialmediaproxy:war:0.1
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-compiler-plugin is missing. # line 125, column 15
[WARNING] 'dependencies.dependency.exclusions.exclusion.groupId' for net.sf.ehcache:ehcache-core:jar is missing. # line 33, column 22
[WARNING] 'dependencies.dependency.exclusions.exclusion.groupId' for net.sf.ehcache:ehcache-core:jar is missing. # line 36, column 22
[WARNING] 'dependencies.dependency.exclusions.exclusion.groupId' for net.sf.ehcache:ehcache-core:jar is missing. # line 41, column 22
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
Here is the part of my pom.xml the warnings are referring to ...
<!-- Grails defaults to Ehache for the second-level Hibernate cache. -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>3.3.1.GA</version>
</dependency>
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache-core</artifactId>
<version>1.7.1</version>
<exclusions>
<exclusion> <!-- line 33 -->
<artifactId>jms</artifactId>
</exclusion>
<exclusion> <!-- line 36 -->
<artifactId>servlet-api</artifactId>
</exclusion>
<!-- We have JCL-over-SLF4J instead. -->
<exclusion>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
Any ideas how i can solve these? Thanks, - Dave

Answer 1

Just a misconfiguration in your pom.xml exclusions - you need to add the groupId entries. I don't know exactly what they need to be (possibly javax.jms) but just replace the fixme as necessary.
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache-core</artifactId>
<version>1.7.1</version>
<exclusions>
<exclusion> <!-- line 33 -->
<groupId>fixme</groupId>
<artifactId>jms</artifactId>
</exclusion>
<exclusion> <!-- line 36 -->
<groupId>fixme</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<!-- We have JCL-over-SLF4J instead. -->
<exclusion>
<groupId>fixme</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>