pom.xml的build/plugins节添加

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-dependency-plugin</artifactId>
    <executions>
        <execution>
            <id>copy-dependencies</id>
            <phase>package</phase>
            <goals>
                <goal>copy-dependencies</goal>
            </goals>
            <configuration>
                <includeGroupIds>com.xxx.xxx</includeGroupIds>
                <outputDirectory>${project.targetDir}</outputDirectory>
            </configuration>
        </execution>
    </executions>
</plugin>

package打包后会自动将依赖的group为com.xxx.xxx的jar包放到target/dependency目录中