1.为什么要统一管理?
maven父子工程多模块,每个模块还都可以独立存在,子模块往往通常希望和父工程保持一样的版本,如果每个工程单独定义版本号,后期变更打包也非常麻烦,如何维护一个全局的版本号呢?
2.如何解决呢?
Maven官方文档说:自 Maven 3.5.0-beta-1 开始,可以使用 ${revision}, ${sha1} and/or ${changelist} 这样的变量作为版本占位符。
即在maven多模块项目中,可配合插件flatten-maven-plugin
及${revision}
属性来实现全局版本统一管理。
父工程
<?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">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-parent</artifactId>
<version>2.7.18</version>
</parent>
<groupId>com.xxx.project</groupId>
<artifactId>xxx-parent</artifactId>
<packaging>pom</packaging>
<version>${revision}</version>
<modules>
<module>module1</module>
<module>module2</module>
<module>module3</module>
</modules>
<properties>
<!-- globe version,if you can update the version for all project -->
<revision>1.1.1</revision>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<build>
<plugins>
<!-- 添加flatten-maven-plugin插件 -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>flatten-maven-plugin</artifactId>
<version>1.3.0</version>
<inherited>true</inherited>
<executions>
<execution>
<id>flatten</id>
<phase>process-resources</phase>
<goals>
<goal>flatten</goal>
</goals>
<configuration>
<updatePomFile>true</updatePomFile>
<flattenMode>resolveCiFriendliesOnly</flattenMode>
<pomElements>
<parent>expand</parent>
<distributionManagement>remove</distributionManagement>
<repositories>remove</repositories>
</pomElements>
</configuration>
</execution>
<execution>
<id>flatten.clean</id>
<phase>clean</phase>
<goals>
<goal>clean</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
子模块
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>xxx-parent</artifactId>
<groupId>com.xxx.project</groupId>
<version>${revision}</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>module3</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>com.xxx.project</groupId>
<artifactId>module1</artifactId>
<version>${revision}</version>
</dependency>
</dependencies>
</project>
编译
mvn clean package
基于以上操作,每次版本号变更,只需要修改父模块POM文件中的revision
即可