maven-dependency-plugin:unpack 忽略类型配置

编程问答 2022-06-02

问题描述

有两个独立的Maven项目。既没有共同的父级文件，也没有聚合器 POM 文件。

第二个项目需要一些由 MotionEvent 提供的类。更准确地说，我会在依赖项目中重用一些常见的测试用例，并在 shared-tests 和 test 阶段运行它们。

第一个项目 (integration-test) 包含一些共享测试用例。

shared-tests

运行后

mvn 全新安装

测试 jar 与生产 jar 一起存储。

<?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">
    <modelVersion>4.0.0</modelVersion>
    <groupId>io.github.zforgo.stackoverflow</groupId>
    <artifactId>shared-tests</artifactId>
    <version>0.1.0-SNAPSHOT</version>
    <properties>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
        <maven.compiler.release>11</maven.compiler.release>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter</artifactId>
            <version>5.7.0</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.2.0</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>test-jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
</project>

第二个项目将 spinner@zaphod:~/.m2/repository/io/github/zforgo/stackoverflow/shared-tests/0.1.0-SNAPSHOT$ ll total 28 drwxrwxr-x 2 spinner spinner 4096 Dec 20 15:16 ./ drwxrwxr-x 3 spinner spinner 4096 Dec 20 15:16 ../ -rw-rw-r-- 1 spinner spinner 931 Dec 20 15:23 maven-Metadata-local.xml -rw-rw-r-- 1 spinner spinner 248 Dec 20 15:23 _remote.repositories -rw-rw-r-- 1 spinner spinner 3183 Dec 20 15:23 shared-tests-0.1.0-SNAPSHOT.jar -rw-rw-r-- 1 spinner spinner 3299 Dec 20 14:41 shared-tests-0.1.0-SNAPSHOT.pom -rw-rw-r-- 1 spinner spinner 3961 Dec 20 15:23 shared-tests-0.1.0-SNAPSHOT-tests.jar 定义为测试范围的依赖项，并在 shared-tests 阶段尝试解包。

generate-test-sources

但是当我跑步时

mvn 安装

<?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"> <modelVersion>4.0.0</modelVersion> <groupId>io.github.zforgo.stackoverflow</groupId> <artifactId>project</artifactId> <version>0.1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>io.github.zforgo.stackoverflow</groupId> <artifactId>shared-tests</artifactId> <version>0.1.0-SNAPSHOT</version> <type>test-jar</type> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <version>3.1.2</version> <executions> <execution> <id>share-tests</id> <phase>generate-test-sources</phase> <goals> <goal>unpack</goal> </goals> <configuration> <artifactItems> <artifactItem> <groupId>io.github.zforgo.stackoverflow</groupId> <artifactId>shared-tests</artifactId> <version>0.1.0-SNAPSHOT</version> <type>test-jar</type> <outputDirectory>${project.build.directory}/alternateLocation</outputDirectory> </artifactItem> </artifactItems> </configuration> </execution> </executions> </plugin> </plugins> </build> </project> 的生产工件将被解包而不是 test-jar。

shared-tests

根据日志，已配置所需的工件

配置的工件：io.github.zforgo.stackoverflow:shared-tests:0.1.0-SNAPSHOT:test-jar

但是解压错了。

解压 [...]/shared-tests/0.1.0-SNAPSHOT/shared-tests-0.1.0-SNAPSHOT.jar 到 ...

这是一个错误还是有可能将 test-jar 解压到其他项目中？可能使用 [INFO] ---------------< io.github.zforgo.stackoverflow:project >--------------- [INFO] Building project 0.1.0-SNAPSHOT [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-dependency-plugin:3.1.2:unpack (share-tests) @ project --- [INFO] Configured Artifact: io.github.zforgo.stackoverflow:shared-tests:0.1.0-SNAPSHOT:test-jar [INFO] Unpacking /home/spinner/.m2/repository/io/github/zforgo/stackoverflow/shared-tests/0.1.0-SNAPSHOT/shared-tests-0.1.0-SNAPSHOT.jar to /work/source/stackoverflow/junit-test-sharing/test-jar/project/target/alternateLocation with includes "" and excludes "" [INFO] [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ 可能是一种解决方案，但这不是为了指定工件的类型。

解决方法

经过一些调试后，这似乎是一个错误。

unpack 目标可以很好地读取配置并使用正确的参数创建一个 ArtifactItem 对象。但是当它基于 Artifact 创建一个 ArtifactItem 对象时，没有设置类型参数，将使用默认值 (jar)。

可以在here找到源代码。

相关部分是：

   protected Artifact getArtifact( ArtifactItem artifactItem )
        throws MojoExecutionException
    {
        Artifact artifact;

        try
        {

            // ...

            ProjectBuildingRequest buildingRequest = newResolveArtifactProjectBuildingRequest();

            if ( localRepositoryDirectory != null )
            {
                buildingRequest =
                    repositoryManager.setLocalRepositoryBasedir( buildingRequest,localRepositoryDirectory );
            }

            // Map dependency to artifact coordinate
            DefaultArtifactCoordinate coordinate = new DefaultArtifactCoordinate();
            coordinate.setGroupId( artifactItem.getGroupId() );
            coordinate.setArtifactId( artifactItem.getArtifactId() );
            coordinate.setVersion( artifactItem.getVersion() );
            coordinate.setClassifier( artifactItem.getClassifier() );

            // ...


            artifact = artifactResolver.resolveArtifact( buildingRequest,coordinate ).getArtifact();
        }
        catch ( ArtifactResolverException e )
        {
            throw new MojoExecutionException( "Unable to find/resolve artifact.",e );
        }

        return artifact;
    }

虽然

            // Map dependency to artifact coordinate
            DefaultArtifactCoordinate coordinate = new DefaultArtifactCoordinate();

将 type 设置为 java 作为它从未更新的默认值。 此行为在此处报告：MDEP-732

解决方法可以使用 <classifier> 而不是 <type> 像：

<!-- ... -->
                        <configuration>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>io.github.zforgo.stackoverflow</groupId>
                                    <artifactId>shared-tests</artifactId>
                                    <version>0.1.0-SNAPSHOT</version>
                                    <!-- note: classifier must be tests not test-jar -->
                                    <classifier>tests</classifier>
                                    <outputDirectory>${project.build.directory}/alternateLocation</outputDirectory>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
<!-- ... -->
mavenmaven-dependency-plugin