springboot聚合工程，多模块打包报错‘packaging‘ with value ‘jar‘ is invalid. Aggregator projects require ‘pom‘ as

springboot多模块打包报错注意两点：

1、

<relativePath/>给父模块加上，

子模块加<relativePath>../pom.xml</relativePath>

2、父模块加上：

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.1.RELEASE</version>
        <relativePath/> <!-- <relativePath/>需要加上 -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>j_cloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>j_cloud</name>
    <description>Demo project for Spring Boot</description>
    <!--    spring boot 聚合父工程中，打包类型要求设置为 pom-->
    <packaging>pom</packaging>