maven-3 - 自定义Maven打包，不包含传递依赖项

Question

我正在玩一些非Java构件的自定义Maven 3打包插件，并且在使传递性依赖项起作用时遇到问题。我定义了三个项目，分别是model，model-impl和cli，它们的依赖关系如下:

cli
  model-impl
    model

我的自定义生命周期插件在每个项目中都会被调用，并且我可以成功地构建模型和模型隐喻。对于每个项目，预期的工件都存储在我的本地资源库中。 cli但是失败了，因为我没有在Mojo中将模型作为依赖项。我不完全确定这是我的代码中存在的问题，因为即使使用mvndependency:dependency-tree也不会显示完整的依赖关系层次结构:

[INFO] Scanning for projects...
[INFO]
[INFO] ----------------------< com.corp.nodes:myproj-cli >-----------------------
[INFO] Building myproj Test 1.0.0-SNAPSHOT
[INFO] --------------------------------[ myproj ]--------------------------------
[INFO]
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ myproj-cli ---
[INFO] com.corp.nodes:myproj-cli:myproj:1.0.0-SNAPSHOT
[INFO] \- com.corp.:myproj-model-impl:myproj:1.0.0-SNAPSHOT:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------

在这里，我希望我能看到每个项目都有三层的树。

这是我的自定义插件中定义的components.xml:

<component-set>
    <components>
        <component>
            <role>org.apache.maven.lifecycle.mapping.LifecycleMapping</role>
            <role-hint>myproj</role-hint>
            <implementation>
                org.apache.maven.lifecycle.mapping.DefaultLifecycleMapping
            </implementation>
            <configuration>
                <phases>
                    <initialize>com.corp.maven:myproj-plugin:unpackageDependencies</initialize>
                    <process-resources>org.apache.maven.plugins:maven-resources-plugin:resources</process-resources>
                    <compile>com.corp.maven:myproj-plugin:compile</compile>
                    <process-test-resources>org.apache.maven.plugins:maven-resources-plugin:testResources</process-test-resources>
                    <test-compile>org.apache.maven.plugins:maven-compiler-plugin:testCompile</test-compile>
                    <test>org.apache.maven.plugins:maven-surefire-plugin:test</test>
                    <package>com.corp.maven:myproj-plugin:package</package>
                    <install>org.apache.maven.plugins:maven-install-plugin:install</install>
                    <deploy>org.apache.maven.plugins:maven-deploy-plugin:deploy</deploy>
                </phases>
            </configuration>
        </component>
        <component>
            <role>org.apache.maven.artifact.handler.ArtifactHandler</role>
            <role-hint>myproj</role-hint>
            <implementation>org.apache.maven.artifact.handler.DefaultArtifactHandler</implementation>
            <configuration>
                <type>myproj</type>
                <extension>myproj</extension>
                <packaging>myproj</packaging>
                <addedToClasspath>true</addedToClasspath>
                <includesDependencies>true</includesDependencies>
            </configuration>
        </component>
    </components>
</component-set>

所有项目POM的包装都设置为myproj，所有依赖项的类型都设置为myproj。这是cli项目的pom:

<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>

    <groupId>com.corp.arthur.nodes</groupId>
    <artifactId>myproj-cli</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>myproj</packaging>

    <name>myproj Test</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.corp.arthur</groupId>
            <artifactId>myproj-model-impl</artifactId>
            <version>1.0.0-SNAPSHOT</version>
            <type>myproj</type>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>com.corp.maven</groupId>
                <artifactId>myproj-plugin</artifactId>
                <version>1.0.0-SNAPSHOT</version>
                <extensions>true</extensions>
            </plugin>
        </plugins>
    </build>
</project>

impl项目的POM看起来很相似。任何想法就是我所缺少的吗？

Answer 1

最后，通过跟踪DefaultDependencyCollector类的源找出了发生了什么。原来，我需要在我的components.xml中将includesDependencies设置为 false 。发生的事情是，依赖关系收集器看到该标志为true，这意味着依赖关系已包含在工件中，因此没有通过它们进行递归。将其设置为false，它会递归，并且得到预期的行为。

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------< com.corp.nodes:myproj-cli >------------------
[INFO] Building myproj Test: CLI Node 1.0.0-SNAPSHOT
[INFO] --------------------------------[ myproj ]--------------------------------
[INFO]
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ myproj-cli ---
[INFO] com.corp.nodes:myproj-cli:myproj:1.0.0-SNAPSHOT
[INFO] \- com.corp:myproj-model-impl:myproj:1.0.0-SNAPSHOT:compile
[INFO]    \- com.corp:myproj-model:myproj:1.0.0-SNAPSHOT:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------