我在 Maven 项目中收到以下构建错误:

Build errors for my-project; org.apache.maven.lifecycle.LifecycleExecutionException:
Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.1:unpack- dependencies (unpack-config) on project my-project: Unknown archiver type

pom.xml对于这个项目包含

 <plugin> 
    <artifactId>maven-dependency-plugin</artifactId> 
    <executions> 
        <execution> 
            <id>unpack-config</id> 
            <goals> 
                <goal>unpack-dependencies</goal> 
            </goals> 
            <phase>generate-resources</phase> 
            <configuration> 
                <outputDirectory> 
                    ${project.build.directory}/${project.build.finalName}/ 
                </outputDirectory> 
                <includeArtifactIds>my-project-ui</includeArtifactIds> 
                <includeGroupIds>${project.groupId}</includeGroupIds> 
                <excludeTransitive>true</excludeTransitive> 
            </configuration> 
        </execution> 
    </executions> 
</plugin> 

我从 this link得到的理解是

"It will resolve the dependencies (including transitive dependencies) from the repository and unpack them to the specified location."

请帮助我理解这一点。我目前的理解是，我创建的Maven项目会先打包成JAR形式放到repository中。在构建时，该项目将被解压，所需文件将被放置在目标文件夹中。这样对吗？异常的原因是什么？

我尝试了很多搜索，但找不到答案。

请您参考如下方法:

好像是这个问题？
http://jira.codehaus.org/browse/MDEP-194
一个解决方案似乎是升级依赖解包插件并指定 mvn install (而不是 mvn test)