Maven：没有要安装的主要工件，而是安装附加的工件 [英] Maven: No primary artifact to install, installing attached artifacts instead

问题描述

我有一个父 Maven POM看起来像这样（可以看到oss-parent 这里）：

I have a parent Maven POM that looks like this (the oss-parent can be seen here):

<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>com.blockwithme</groupId>
        <artifactId>oss-parent</artifactId>
        <version>0.0.5</version>
    </parent>

    <groupId>com.blockwithme</groupId>
    <artifactId>xtend-contrib-parent</artifactId>
    <version>0.0.3</version>
    <packaging>pom</packaging>
    <inceptionYear>2013</inceptionYear>
    <name>Xtend Contrib Parent</name>
    <dependencies>
        <dependency>
            <groupId>org.eclipse.xtend</groupId>
            <artifactId>org.eclipse.xtend.lib</artifactId>
        </dependency>
        <dependency>
            <groupId>org.eclipse.xtend</groupId>
            <artifactId>org.eclipse.xtend.core</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.eclipse.xtend</groupId>
                <artifactId>xtend-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <modules>
        <module>base</module>
        <module>examples</module>
    </modules>
</project>

子项基数POM如下所示：

With a child "base" POM that looks like this:

<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>com.blockwithme</groupId>
        <artifactId>xtend-contrib-parent</artifactId>
        <version>0.0.3</version>
    </parent>
    <artifactId>xtend-contrib-base</artifactId>
</project>

它在本地仓库中创建并安装子Jar。但我也想安装源和/或javadoc。所以我将它添加到父 POM：

It creates and install the child Jar in the local repo. But I would like to install the source and/or javadoc too. So I add this to the parent POM:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-source-plugin</artifactId>
</plugin>
<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-javadoc-plugin</artifactId>
</plugin>

但如果我这样做，那么源代码和javadoc就会安装，但编译后的代码jar 停止安装，这对我没用。 Maven发出此警告：

But if I do that, the source and javadoc get installed, but the compiled code jar stops being installed, which makes no sense to me. Maven gives this warning:

[INFO] No primary artifact to install, installing attached artifacts instead.

如果我不尝试获取源代码，不会出现安装。添加maven-jar-plugin插件没有帮助。也没有添加< packaging> jar< / packaging>给孩子POM。

Which does not appear, if I do not try to get the source installed. Adding the maven-jar-plugin plugin does not help. Nor does adding "<packaging>jar</packaging>" to the child POM.

推荐答案

您可以尝试从 jar <更改源插件的目标/ code>到 jar-no-fork 。使用 source：jar 目标作为生命周期的一部分，Maven将重新运行绑定到generate-sources及其前身的所有目标。我的假设是在该循环中有一个干净的执行，擦除主jar文件。相比之下， jar-no-fork 将不会再次运行绑定目标。

You could try to change a goal for the source plugin from jar to jar-no-fork. With source:jar goal as part of the lifecycle, Maven will re-run all of the goals bound to generate-sources and its predecessors. My assumption is that there is a clean executed somewhere during that loop, erasing the main jar file. In contrast, jar-no-fork will not run the bound goals again.

因此插件配置应该看起来像

Plugin configuration should therefore look like

<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-source-plugin</artifactId>
   <executions>
      <execution>
         <phase>package</phase>
         <goals>
            <goal>jar-no-fork</goal>
         </goals>
      </execution>
   </executions>
</plugin>

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