Maven : Remove duplicate jars from EAR

We are using maven to build an EAR that contains WAR, the JARS are duplicated on both EAR's root and WAR's lib folder, I read about the skinny jars to remove the jars from the WAR but I don't want this as I want to keep the WAR as stand alone unit,
IS there a way to do it the other way around and remove the JARs from the EAR's root folder ?
attached is the EAR POM

    <build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-ear-plugin</artifactId>
            <version>2.6</version>
            <configuration>
                <modules>
                    <webModule>
                        <groupId>com.csv.xyz</groupId>
                        <artifactId>web</artifactId>
                    </webModule>
                </modules>
            </configuration>
        </plugin>
    </plugins>
</build>
<dependencies>
    <dependency>
        <groupId>com.csv.xyz</groupId>
        <artifactId>web</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <type>war</type>
        <scope>compile</scope>
    </dependency>
</dependencies>

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The "maven-skinny-war" soloution isn't any drawback in your case. Also have a look at this question and my answer: How to make maven place all jars common to wars inside the same EAR to EAR root?

With this soloution you will first get WARs packaged with their own dependencies and second an EAR module with skinny WARs. So everything is deployable on its own and nothing is duplicated.

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I don't think this would be a good idea because of the class loader architecture. If a JAR is part of a WAR, it's defined by the web app class loader, which may result in multiple instances. If it's part of an EAR, it's defined by the enterprise app class loader, which is a different class loader.

---

To remove a dependency from the EAR lib folder, declare the dependencies as provided in the EAR pom, for example to remove commons-lang:

<dependencies>  
    <dependency>
        <groupId>commons-lang</groupId>
        <artifactId>commons-lang</artifactId>
        <version>2.6</version>
        <scope>provided</scope>
    </dependency>    
</dependencies>

Just make sure if you have EJB modules that they don't require the dependency! Also webModules do not contribute to the EAR's root lib folder, do you have more dependencies in you ear pom?

链接地址: http://www.djcxy.com/p/82664.html

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