maven多模块项目父子版本号设置

父pom文件

<?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">
    <groupId>com.backend</groupId>
    <artifactId>scaffold</artifactId>
    <!--使用revision标签来关联统一版本号-->
    <version>${revision}</version>
    <name>scaffold</name>
    <modelVersion>4.0.0</modelVersion>
    <packaging>pom</packaging>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.1.RELEASE</version>
    </parent>
    <modules>
        <module>gateway</module>
        <module>common</module>
    </modules>
    <properties>
        <!--使用revision标签定义项目版本-->
        <revision>0.0.1-SNAPSHOT</revision>
    </properties>
    <!--父pom定义的依赖会被子模块依赖 所以父pom中定义所有子模块需要依赖的jar包-->
    <dependencies>
    </dependencies>
    <!--父pom定义的依赖管理会约束子模块相关jar包的依赖版本，此处定义一些依赖但并不会被所有子模块自动依赖
    子模块根据需要自动引入所需依赖的坐标-->
    <dependencyManagement>
    </dependencyManagement>
    <build>
        <plugins>
            <plugin>
                <!--该插件用于install/deploy时替换版本号，服务revision标签的使用-->
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>flatten-maven-plugin</artifactId>
                <version>1.1.0</version>
                <configuration>
                    <updatePomFile>true</updatePomFile>
                    <flattenMode>resolveCiFriendliesOnly</flattenMode>
                </configuration>
                <executions>
                    <execution>
                        <id>flatten</id>
                        <phase>process-resources</phase>
                        <goals>
                            <goal>flatten</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>flatten.clean</id>
                        <phase>clean</phase>
                        <goals>
                            <goal>clean</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

子pom—common

<?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>
    <artifactId>common</artifactId>
    <packaging>jar</packaging>

    <parent>
        <artifactId>scaffold</artifactId>
        <groupId>com.backend</groupId>
        <version>${revision}</version>
    </parent>

    <dependencies>

    </dependencies>

</project>

子pom-gateway（gateway模块依赖common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">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>gateway</artifactId>
    <packaging>jar</packaging>

    <parent>
        <groupId>com.backend</groupId>
        <artifactId>scaffold</artifactId>
        <version>${revision}</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>com.backend</groupId>
            <artifactId>common</artifactId>
            <!--使用${project.version}标签来引入common模块-->
            <version>${project.version}</version>
        </dependency>
    </dependencies>

</project>