springboot 多模块项目 maven打包报错 ，如下：

E:\workspace_idea\cm>mvn clean package
[INFO] Scanning for projects...
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] 'packaging' with value 'jar' is invalid. Aggregator projects require 'pom' as packaging. @ line 3, column 110
 @
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR]   The project com.robot:cm:0.0.1 (E:\workspace_idea\cm\pom.xml) has 1 error
[ERROR]     'packaging' with value 'jar' is invalid. Aggregator projects require 'pom' as packaging. @ line 3, column 110
[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/ProjectBuildingException

报错意思是 打包的是jar,但是需要 pom

看了下 多模块项目的 parent 项目 pom.xml文件，如下：

将 parent 项目中的 packaging 改为 pom 就好了。(注意是 parent 项目 )