如何阻止特定maven-jar-plugin执行产物被安装/部署？

你只需要在maven-jar-plugin对应execution的configuration中添加<attach>false</attach>配置项，就能阻止这个额外的JAR被安装到本地仓库或部署到远程仓库，只会留在你指定的target子目录里。

修改后的完整POM配置如下：

<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>

    <groupId>com.me</groupId>
    <artifactId>my-artifact</artifactId>
    <packaging>jar</packaging>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <executions>
                    <execution>
                        <id>some-other-sources</id>
                        <phase>process-test-classes</phase>
                        <goals>
                            <goal>test-jar</goal>
                        </goals>
                        <configuration>
                            <testClassesDirectory>${project.build.directory}/some-other-sources</testClassesDirectory>
                            <outputDirectory>${project.build.directory}/some-other-sources</outputDirectory>
                            <classifier>some-other-sources</classifier>
                            <!-- 添加该配置阻止JAR被纳入仓库同步流程 -->
                            <attach>false</attach>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

原理说明 #

maven-jar-plugin的attach参数默认值为true，意味着生成的JAR会作为项目附属构件，参与后续install、deploy等阶段。将其设为false后，这个JAR就只会作为临时产物保留在指定的输出目录，不会被Maven同步到本地或远程仓库。

内容的提问来源于stack exchange，提问作者JackPGreen