<?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?http://maven.apache.org/xsd/maven-4.0.0.xsd">
????<parent>
????????<artifactId>mcex01_aggregation</artifactId>
????????<groupId>org.example</groupId>
????????<version>1.0-SNAPSHOT</version>
????</parent>
????<modelVersion>4.0.0</modelVersion>

????<artifactId>mcex02_test</artifactId>

????<properties>
????????<maven.compiler.source>8</maven.compiler.source>
????????<maven.compiler.target>8</maven.compiler.target>
????</properties>

</project>

????????????????????

最初聚合項目的子項目是上面這個樣子，創建項目的過程中會修改內容

添加module么？是不是沒選parent