具体异常如下：（main项目对应老师的runtime项目）

[INFO] java9-sms-parent ................................... SUCCESS [  0.001 s]

[INFO] model .............................................. SUCCESS [  1.748 s]

[INFO] persistence ........................................ SUCCESS [  0.721 s]

[INFO] service ............................................ SUCCESS [  0.779 s]

[INFO] file-store ......................................... SUCCESS [  0.828 s]

[INFO] main ............................................... FAILURE [  1.184 s]

[INFO] ------------------------------------------------------------------------

[INFO] BUILD FAILURE

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 5.361 s

[INFO] Finished at: 2018-05-30T19:37:12+08:00

[INFO] Final Memory: 13M/54M

[INFO] ------------------------------------------------------------------------

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:3.1.0:single (make-assembly) on project main: Failed to create assembly: Error creating assembly archive dist-dir: archive cannot be empty -> [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/MojoExecutionException

[ERROR] 

[ERROR] After correcting the problems, you can resume the build with the command

[ERROR]   mvn <goals> -rf :main

去掉以下标签可以打包成功，但是没有输出全部的jar包

<goals>
    <goal>single</goal>
</goals>

望高手解惑