我正在尝试 ivy:install jogl 和 gluegen 从 maven 到我的本地仓库。我无法正确安装 native 依赖项。

我的 Ivy 设置是

<ivysettings>
    <settings defaultResolver="central"
            defaultConflictManager="all"
    />
    <caches defaultCacheDir="${ivy.cache.dir}"
            artifactPattern="[organisation]/[module]/[type]s/[artifact]-[revision](-[classifier]).[ext]" 
    />
    <resolvers>
        <ibiblio name="central" m2compatible="true"
                 pattern="[organisation]/[module]/[revision]/[artifact]-[revision](-[classifier]).[ext]"
        />
        <filesystem name="depository">
            <ivy pattern="${dest.repo.dir}/[organisation]/[module]/ivys/ivy-[revision](-[classifier]).xml" />
            <artifact pattern="${dest.repo.dir}/[organisation]/[module]/[type]s/[artifact]-[revision](-[classifier]).[ext]" />
        </filesystem>
    </resolvers>
</ivysettings>

我的安装目标是

<ivy:install settingsRef="ivy.settings" 
    organisation="org.jogamp.jogl" module="jogl-all-main" revision="2.1.5-01"
    from="${from.resolver}" to="${to.resolver}" transitive="true" overwrite="true" />

其中 from.resolver 是 central，to.resolver 是 depository。

分类器是例如 native-windows-i586、native-linux-armv6 等。有问题的 pom 文件位于 http://repo1.maven.org/maven2/org/jogamp/jogl/jogl-all-main/2.1.5-01/jogl-all-main-2.1.5-01.pom。

我正确解析了 jogl-all-main。解析依赖时，只解析pom文件中的最后一个，即jogl-all-2.1.5-01-natives-windows-i586.jar。有什么方法可以使用 ivy:install 任务从 maven 中央存储库安装到我的本地存储库？

最佳答案

简短的回答是，ivy 对与 Maven 模块关联的附加 Artifact 文件的支持非常有限。

我为重复自己而道歉，但最好建议您运行 Maven 存储库管理器来缓存远程 Maven 存储库。这避免了在不同格式之间进行折衷的必要性。

此限制的由来

远程 Maven POM 不会明确列出其模块的 Artifact 。可能的分类器值的数量没有限制......唯一可以做出的假设是该模块可能包含一个额外的“javadoc”或“sources” Artifact 。 (常见于开源项目)。

Maven documentation分类器描述如下:

classifier: The classifier allows to distinguish artifacts that were built from the same POM but differ in their content. It is some optional and arbitrary string that - if present - is appended to the artifact name just after the version number.

As a motivation for this element, consider for example a project that offers an artifact targeting JRE 1.5 but at the same time also an artifact that still supports JRE 1.4. The first artifact could be equipped with the classifier jdk15 and the second one with jdk14 such that clients can choose which one to use.

Another common use case for classifiers is the need to attach secondary artifacts to the project’s main artifact. If you browse the Maven central repository, you will notice that the classifiers sources and javadoc are used to deploy the project source code and API docs along with the packaged class files.

Ivy 存储库的工作方式不同。该模块的 ivy 文件有一个 publications section明确列出模块的内容。

为了更深入地了解 ivy 如何解释 Maven 存储库，我推荐以下帖子。

• How are maven scopes mapped to ivy configurations by ivy

可能的解决方法

以下示例使用 retrieve任务将下载的依赖项写成所需的存储库格式。结果是缺少校验和文件，但这可能无关紧要。

├── build.xml
├── ivy.xml
└── target
    └── repo
        └── org
            └── jogamp
                └── jogl
                    ├── jogl-all
                    │   └── 2.1.5-01
                    │       ├── jogl-all-2.1.5-01.jar
                    │       ├── jogl-all-2.1.5-01-javadoc.jar
                    │       ├── jogl-all-2.1.5-01-natives-android-armv6.jar
                    │       ├── jogl-all-2.1.5-01-natives-linux-amd64.jar
                    │       ├── jogl-all-2.1.5-01-natives-linux-armv6hf.jar
                    │       ├── jogl-all-2.1.5-01-natives-linux-armv6.jar
                    │       ├── jogl-all-2.1.5-01-natives-linux-i586.jar
                    │       ├── jogl-all-2.1.5-01-natives-macosx-universal.jar
                    │       ├── jogl-all-2.1.5-01-natives-solaris-amd64.jar
                    │       ├── jogl-all-2.1.5-01-natives-solaris-i586.jar
                    │       ├── jogl-all-2.1.5-01-natives-windows-amd64.jar
                    │       ├── jogl-all-2.1.5-01-natives-windows-i586.jar
                    │       └── jogl-all-2.1.5-01-sources.jar
                    └── jogl-all-main
                        └── 2.1.5-01
                            ├── jogl-all-main-2.1.5-01.jar
                            ├── jogl-all-main-2.1.5-01-javadoc.jar
                            └── jogl-all-main-2.1.5-01-sources.jar

Ivy .xml

<ivy-module version="2.0" xmlns:e="http://ant.apache.org/ivy/extra">
    <info organisation="com.myspotontheweb" module="demo"/>

    <configurations>
        <conf name="repo" description="Artifacts that make up local repository"/>
    </configurations>

    <dependencies>
        <dependency org="org.jogamp.jogl" name="jogl-all-main" rev="2.1.5-01" conf="repo->default">
            <artifact name="jogl-all-main"/>
            <artifact name="jogl-all-main" e:classifier="sources"/>
            <artifact name="jogl-all-main" e:classifier="javadoc"/>
        </dependency>

        <dependency org="org.jogamp.jogl" name="jogl-all" rev="2.1.5-01" conf="repo->default">
            <artifact name="jogl-all"/>
            <artifact name="jogl-all" e:classifier="sources"/>
            <artifact name="jogl-all" e:classifier="javadoc"/>
            <artifact name="jogl-all" e:classifier="natives-android-armv6"/>
            <artifact name="jogl-all" e:classifier="natives-linux-amd64"/>
            <artifact name="jogl-all" e:classifier="natives-linux-armv6"/>
            <artifact name="jogl-all" e:classifier="natives-linux-armv6hf"/>
            <artifact name="jogl-all" e:classifier="natives-linux-i586"/>
            <artifact name="jogl-all" e:classifier="natives-macosx-universal"/>
            <artifact name="jogl-all" e:classifier="natives-solaris-amd64"/>
            <artifact name="jogl-all" e:classifier="natives-solaris-i586"/>
            <artifact name="jogl-all" e:classifier="natives-windows-amd64"/>
            <artifact name="jogl-all" e:classifier="natives-windows-i586"/>
        </dependency>
    </dependencies>

</ivy-module>

注意事项:

• 需要明确列出每个需要下载的 Artifact 。如前所述，只能假定“javadoc”和“sources”分类器。

build.xml

<project name="demo" default="install" xmlns:ivy="antlib:org.apache.ivy.ant">

    <!--
    ================
    Build properties
    ================
    -->
    <property name="repo.dir" location="target"/>

    <!--
    ===========
    Build repo
    ===========
    -->
    <target name="install" description="Download and install dependencies">
        <ivy:retrieve pattern="${repo.dir}/[conf]/[orgPath]/[module]/[revision]/[artifact]-[revision](-[classifier]).[ext]"/>
    </target>

</project>

关于java - ivy:使用分类器从 maven 安装，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24943065/