Failed to execute goal com.github.wvengen:proguard-maven-plugin:2.0.10:proguard (default) on project

执行Maven Install打包的时候，出现以下错误信息：

[ERROR] Failed to execute goal com.github.wvengen:proguard-maven-plugin:2.0.10:proguard (default) on project core: Can‘t find file F:\Workspaces\base-core\core\target\core-2.0\WEB-INF\classes -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

这是<injar>${project.build.finalName}/WEB-INF/classes/</injar>配置导致的问题。
这是一个Java项目，打包输出为jar包，这里应该改为：
<injar>${project.build.finalName}.jar</injar>