Maven执行clean install时sources.jar未安装到.m2仓库求助

执行mvn clean install可生成项目普通jar文件，但本地Maven仓库（.m2目录）中没有生成sources.jar；单独执行mvn source:jar能在target目录生成该文件，说明maven-source-plugin在clean install的构建流程中未被触发执行。

以下是原pom.xml配置：

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>pick.box</groupId>
  <artifactId>pick-box</artifactId>
  <version>1.0.8</version>

  <name>pick-box</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>17</maven.compiler.source>
    <maven.compiler.target>17</maven.compiler.target>
    <java.version>17</java.version>
  </properties>


  <distributionManagement>
    <repository>
      <id>github</id>
      <name>GitHub wbf22 Apache Maven Packages</name>
      <url>https://maven.pkg.github.com/wbf22/PickBox</url>
    </repository>
  </distributionManagement>

  <dependencies>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-api</artifactId>
      <version>5.10.1</version>
      <scope>test</scope>
    </dependency>
    
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.16.1</version>
    </dependency>

  </dependencies>

  <build>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
      <!-- run mvn source:jar to generate these in /target -->
      <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-source-plugin</artifactId>
          <version>3.2.1</version>
          <executions>
            <execution>
              <id>attach-sources</id>
              <phase>package</phase>
              <goals>
                  <goal>jar-no-fork</goal>
              </goals>
            </execution>
          </executions>
      </plugin>


      </plugins>
    </pluginManagement>
  </build>
</project>

你把maven-source-plugin配置放在了<pluginManagement>标签下，这个标签仅用于统一管理插件版本，不会让插件实际参与到Maven的构建生命周期流程中。只有当插件被直接配置在<build><plugins>标签下时，才会绑定到指定的生命周期阶段自动执行。

将maven-source-plugin从<pluginManagement>中移出，放到<build>下的<plugins>标签内。修改后的关键配置如下：

<build>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
        <plugins>
            <!-- 此处可保留其他插件的版本管理配置 -->
        </plugins>
    </pluginManagement>

    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-source-plugin</artifactId>
            <version>3.2.1</version>
            <executions>
                <execution>
                    <id>attach-sources</id>
                    <phase>package</phase>
                    <goals>
                        <goal>jar-no-fork</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

修改完成后重新执行mvn clean install，此时maven-source-plugin会绑定到package阶段执行，生成的sources.jar会被自动安装到本地.m2仓库中。

内容的提问来源于stack exchange，提问作者brando f