IDEA 在打包项目时遇到的ERROR

IDEA 在打包项目时遇到的ERROR

[ERROR] Some problems were encountered while processing the POMs:
'packaging' with value 'jar' is invalid. Aggregator projects require 'pom' as packaging. @ line 4, column 109

这是你的pom.mxl中缺少<packaging>pom</packaing>标签，
默认是<packaging>jar</packaing>改为<packaging>pom</packaing>或者添加上去。