Maven多模块依赖构建

Question

我正在尝试为一个项目设置此 Maven 构建，并希望获得一些帮助以使依赖项正常工作。

Project
   |--pom.xml
   |--environments
        |--pom.xml
   |--configuration
        |--pom.xml
        |--idm
               |--pom.xml
   |--other
        |--pom.xml
        |--iam-scripts
               |--pom.xml

pom.xml for idm 模块如下：

<?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>saas</groupId>
        <artifactId>environments</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../../environments</relativePath> 
    </parent>   

    <groupId>configuration</groupId>
    <artifactId>idm</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-clean-plugin</artifactId>
                <version>2.5</version>
                <configuration>
                    <filesets>
                        <fileset>
                            <directory>${basedir}/modules/iam3/files</directory>
                            <includes>
                                <include>iam-scripts.tgz</include>
                            </includes>
                            <followSymlinks>false</followSymlinks>
                        </fileset>
                    </filesets>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.8</version>
                <executions>
                    <execution>
                        <id>copy-ext-artifacts</id>
                        <phase>generate-sources</phase>
                        <goals>
                            <goal>copy</goal>
                        </goals>
                        <configuration>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>other</groupId>
                                    <artifactId>iam-scripts</artifactId>
                                    <version>1.0.0-SNAPSHOT</version>
                                    <type>tar.gz</type>
                                    <overWrite>true</overWrite>
                                    <outputDirectory>${basedir}/modules/iam3/files</outputDirectory>
                                    <destFileName>iam-scripts.tgz</destFileName>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>${basedir}/modules</directory>
                <filtering>true</filtering>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                    <include>**/*.conf</include>
                    <include>**/*.yaml</include>
                    <include>**/*.varfile</include>
                    <include>**/*.sh</include>
                    <include>**/*.html</include>
                    <include>**/*.tmpl</include>
                    <include>**/*.tmpl.html</include>
                    <include>**/*.groovy</include>
                    <include>**/*.erb</include>
                </includes>
            </resource>
            <resource>
                <directory>${basedir}/modules</directory>
                <filtering>false</filtering>
                <includes>
                    <include>**/*.sql</include>
                    <include>**/*.service</include>
                    <include>**/*.war</include>
                    <include>**/*.groovy</include>
                    <include>**/*.gitkeep</include>
                    <include>**/*.zip</include>
                    <include>**/*.tar.gz</include>
                    <include>**/*.tgz</include>
                    <include>**/*.jar</include>
                    <include>**/*.pp</include>
                    <include>**/*.so</include>
                    <include>**/*.rpm</include>
                    <include>**/*.erb</include>
                </includes>
            </resource>
        </resources>
    </build>
</project>

pom.xml for iam-scripts 模块如下：

<?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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>saas</groupId>
        <artifactId>environments</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../../environments</relativePath>
    </parent>

    <groupId>other</groupId>
    <artifactId>iam-scripts</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <descriptors>
                        <descriptor>
                            src/assembly/conf.xml
                        </descriptor>
                    </descriptors>
                    <finalName>${project.artifactId}</finalName>
                </configuration>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>${basedir}/src/conf</directory>
                <filtering>true</filtering>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                    <include>**/*.conf</include>
                    <include>**/*.yaml</include>
                    <include>**/*.varfile</include>
                    <include>**/*.sh</include>
                    <include>**/*.html</include>
                    <include>**/*.tmpl</include>
                    <include>**/*.tmpl.html</include>
                    <include>**/*.groovy*</include>
                    <include>**/*.rptdesign</include>
                    <include>**/*.cps</include>
                </includes>
            </resource>
            <resource>
                <directory>${basedir}/src/conf</directory>
                <filtering>false</filtering>
                <includes>
                    <include>**/*.sql</include>
                    <include>**/*.service</include>
                    <include>**/*.war</include>
                    <include>**/*.gitkeep</include>
                    <include>**/*.zip</include>
                    <include>**/*.tar.gz</include>
                    <include>**/*.tgz</include>
                    <include>**/*.jar</include>
                    <include>**/*.pp</include>
                    <include>**/*.so</include>
                    <include>**/*.rpm</include>
                    <include>**/*.erb</include>
                    <include>**/*.md</include>
                    <include>**/*.js</include>
                </includes>
            </resource>
        </resources>
    </build>
</project>

所以我需要做的是从idm 模块我需要调用idm-scripts 模块构建。目前（如pom.xml 所示）它所做的只是从存储库中复制iam-scripts.tgz。但是假设我在iam-scripts 中更改了一些内容，而不是手动清理构建iam-scripts，我想从idm 模块中进行构建。

所以我现在要做的步骤是：

• 在iam-scripts 内，我做mvn clean install -Denv=xxx
• 然后在idm 内，我做mvn clean install -Denv=xxx

如何让idm build 调用iam-scripts 的干净版本？

Answer 1

我先问一个关于你的 POM 结构的问题：

什么是...

• configuration/pom.xml 和
• other/pom.xml

...当两者​​都适合...

• idm/pom.xml 和
• iam-scripts/pom.xml

...有environments/pom.xml 作为他们的父母？这样在构建idm 或iam-scripts 时将它们排除在外。 （顺便说一句，我个人认为通过relativePath 跨多个目录级别的交叉引用项目不清楚，我正在避免这种情况。）

在我看来调用另一个项目不符合 POM 的声明性质。虽然可能有一个插件我不知道可以实现这一点。 （哦，是的，我知道一个：GMaven[Plus]。虽然我不在这里推荐它。）

要同时构建idm 和iam-scripts，我会为它们使用一个通用的pom 打包父POM（也许你的Project 可以用于此）并将它们添加为<module>s。

见

• POM Reference, Aggregation (or Multi-Module)
• Maven: The Complete Reference, 3.6.2. Multi-module vs. Inheritance：“多模块构建将用于在单个构建中将模块组合在一起。”。