EAR is packing two copies of WAR and JAR projects

Question

My Maven EAR project packs my EAR with two copies of each of my libraries. One copy is always appended with the version (In my case 1.0-SNAPSHOT). Is there something screwed up in my POMs?

I keep getting these type of errors when i try and deploy to server:

Servlet [blah...] and Servlet [blah..] have the same url pattern: [/RegistrationService_V10].

My EAR project POM looks like this :

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <artifactId>AlmexOffice</artifactId>
        <groupId>com.huwag</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <groupId>com.huwag</groupId>
    <artifactId>AlmexOffice-ear</artifactId>
    <packaging>ear</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>AlmexOFfice-ear JavaEE6 Assembly</name>
    <url>http://maven.apache.org</url>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.0.2</version>
                <configuration>
                    <source>1.5</source>
                    <target>1.5</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-ear-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <version>6</version>
                </configuration>
            </plugin>
        </plugins>
        <finalName>AlmexOffice-ear</finalName>
    </build>
    <dependencies>
        <dependency>
            <groupId>com.huwag</groupId>
            <artifactId>AlmexOffice-ejb</artifactId>
            <version>1.0-SNAPSHOT</version>
            <type>ejb</type>
        </dependency>
        <dependency>
            <groupId>com.huwag</groupId>
            <artifactId>AlmexOffice-web</artifactId>
            <version>1.0-SNAPSHOT</version>
            <type>war</type>
        </dependency>
    </dependencies>
</project>

Answer 1

In the maven-ear-plugin, you have to specify your ejbmodule and webmodule

<plugin>
    <artifactId>maven-ear-plugin</artifactId>
    <version>2.8</version>
    <configuration>
      <modules>
        <ejbModule>
           <groupId>com.huwag</groupId>
           <artifactId>AlmexOffice-ejb</artifactId>
        </ejbModule>
        <webModule>
           <groupId>com.huwag</groupId>
           <artifactId>AlmexOffice-web</artifactId>
           <contextRoot>/custom-context-root</contextRoot>
         </webModule>
      </modules>
    </configuration>
</plugin>

Could you give us the feedback if it works better?