Maven：如何使用Pom.xml

Question

如何在EAR pom.xml文件中添加JPA Project？我没有在Maven中看到JPA模块。

    <build>
    <plugins>
        <plugin>
            <artifactId>maven-ear-plugin</artifactId>
            <version>2.10</version>
            <configuration>
                <earSourceDirectory>EarContent</earSourceDirectory>
                <generateApplicationXml>false</generateApplicationXml>
                <version>6</version>
                <defaultLibBundleDir>lib</defaultLibBundleDir>
                <modules>
                    <jarModule>
                        <groupId>artifactGroupId</groupId>
                        <artifactId>artifactId</artifactId>
                        <bundleDir>APP-INF/lib</bundleDir>
                    </jarModule>
                </modules>
            </configuration>
        </plugin>
    </plugins>
</build>