‘packaging‘ with value ‘jar‘ is invalid. Aggregator projects require ‘pom‘ as packaging.

一个多模块的springboot项目中，出现错误如下

'packaging' with value 'jar' is invalid. Aggregator projects require 'pom' as packaging.

解决方案

在父类pom.xml文件中加入<packaging>pom</packaging>

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.4.5</version><relativePath/> <!-- lookup parent from repository --></parent><packaging>pom</packaging>  <groupId>com.bq8023</groupId><artifactId>springboot-activemq</artifactId><version>0.0.1-SNAPSHOT</version><name>springboot-activemq</name><description>Demo project for Spring Boot with ActiveMQ</description><properties><java.version>1.8</java.version></properties><modules><module>queue-producer</module><module>queue-customer</module><module>topic-producer</module><module>topic-customer</module></modules>
</project>

出错原因

项目的打包类型：pom、jar、war，packing默认是jar类型
pom ---------> 父类型都为pom类型
jar ---------> 内部调用或者是作服务使用
war ---------> 需要部署的项目

pom 是最简单的打包类型，生成的构件只有它本身，没有java代码，也不执行任何代码，只是为了聚合工程或传递依赖用。

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‘packaging‘ with value ‘jar‘ is invalid. Aggregator projects require ‘pom‘ as packaging.

解决方案

出错原因

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