同时使用 maven-flatten-plugin 和 maven-shade-plugin答案

【问题标题】：Use maven-flatten-plugin and maven-shade-plugin at the same time同时使用 maven-flatten-plugin 和 maven-shade-plugin
【发布时间】：2019-03-04 06:34:46
【问题描述】：

如何同时使用maven-flatten-plugin和maven-shade-plugin？

我使用revision,sha1,changelist 来管理多模块项目的版本。

为了部署可消费的工件，我使用 maven-flatten-plugin 生成一个扁平化的 pom，它使 ${revision} 具有实际价值。

但是 maven-shade-plugin 会生成一个简化的 pom，但 ${revision} 不变。

如何指定maven-shade-plugin使用扁平化的pom来减少pom。

【问题讨论】：

我也有同样的问题。

标签： maven maven-shade-plugin

【解决方案1】：

我在使用 ${revision} 属性时遇到了同样的问题，但使用了该选项 <createDependencyReducedPom>false</createDependencyReducedPom> 解决了我的问题。如果您需要减少依赖的 pom，则此解决方案不起作用。

https://maven.apache.org/plugins/maven-shade-plugin/shade-mojo.html

【讨论】：

【解决方案2】：

我今天遇到了同样的问题，但在网上没有找到真正的解决方案。虽然 PaulT 的建议可能对某些人有用，但我发现这是不可接受的，因为尽管将 <promoteTransitiveDependencies> 设置为 true，但传递依赖项仍未包含在生成的 pom 中。

我可以通过简单地更改flatten 和shade 之间的执行顺序来解决这个问题。您只需要确保flatten 运行之后 shade。如果您在父 pom 中定义了 flatten 插件，只需在您的聚合器项目中添加相同的插件定义，并使用相同的执行 ID。

之前（原订单）：

之后（修改顺序）：

示例：

父项目 (POM)

<?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>com.ibasco.test</groupId>
    <artifactId>ucgd-parent</artifactId>
    <packaging>pom</packaging>
    <version>${revision}</version>

    <properties>
        <revision>2.0.0-alpha</revision>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <modules>
        <module>module-one</module>
        <module>module-two</module>
        <module>module-three</module>
        <module>assembly</module>
    </modules>

    <build>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-shade-plugin</artifactId>
                    <version>3.2.1</version>
                </plugin>
                <plugin>
                    <groupId>org.codehaus.mojo</groupId>
                    <artifactId>flatten-maven-plugin</artifactId>
                    <version>1.1.0</version>
                    <configuration>
                        <updatePomFile>true</updatePomFile>
                        <flattenMode>resolveCiFriendliesOnly</flattenMode>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>

        <plugins>
            <!-- Flatten -->
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>flatten-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <id>flatten</id>
                        <phase>package</phase>
                        <goals>
                            <goal>flatten</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>flatten.clean</id>
                        <phase>clean</phase>
                        <goals>
                            <goal>clean</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

聚合器项目 (POM)

<?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">
    <parent>
        <artifactId>ucgd-parent</artifactId>
        <groupId>com.ibasco.test</groupId>
        <version>${revision}</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>ucg-display</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>com.ibasco.test</groupId>
            <artifactId>module-two</artifactId>
        </dependency>
        <dependency>
            <groupId>com.ibasco.test</groupId>
            <artifactId>module-one</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <!-- A little workaround to disable the jar warning -->
                    <classesDirectory>src</classesDirectory>
                    <excludes>
                        <exclude>**</exclude>
                    </excludes>
                </configuration>
            </plugin>
            <!-- Javadoc -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-javadoc-plugin</artifactId>
                <executions>
                    <execution>
                        <id>aggregate-javadocs</id>
                        <phase>package</phase>
                        <goals>
                            <goal>aggregate-jar</goal>
                        </goals>
                        <configuration>
                            <includeDependencySources>true</includeDependencySources>
                            <dependencySourceIncludes>
                                <dependencySourceInclude>com.ibasco.test:*</dependencySourceInclude>
                            </dependencySourceIncludes>
                            <dependencySourceExcludes>
                                <dependencySourceExclude>com.ibasco.test:module-three</dependencySourceExclude>
                            </dependencySourceExcludes>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <!-- Shade plugin -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <createSourcesJar>true</createSourcesJar>
                            <shadedArtifactAttached>false</shadedArtifactAttached>
                            <createDependencyReducedPom>true</createDependencyReducedPom>
                            <!-- Make sure the transitive dependencies are written to the generated pom under <dependencies> -->
                            <promoteTransitiveDependencies>true</promoteTransitiveDependencies>
                            <artifactSet>
                                <includes>
                                    <include>com.ibasco.test:module-one</include>
                                    <include>com.ibasco.test:module-two</include>
                                </includes>
                            </artifactSet>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <!-- Flatten -->
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>flatten-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <id>flatten</id>
                        <phase>package</phase>
                        <goals>
                            <goal>flatten</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

输出：

    <?xml version="1.0" encoding="UTF-8"?>
    <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>com.ibasco.test</groupId>
            <artifactId>ucgd-parent</artifactId>
            <version>2.0.0-alpha</version>
        </parent>
        <groupId>com.ibasco.test</groupId>
        <artifactId>ucg-display</artifactId>
        <version>2.0.0-alpha</version>
        <dependencies>
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
                <version>3.9</version>
                <scope>compile</scope>
                <optional>false</optional>
            </dependency>
        </dependencies>
        <build>
            <plugins>
                <plugin>
                    <artifactId>maven-jar-plugin</artifactId>
                    <configuration>
                        <classesDirectory>src</classesDirectory>
                        <excludes>
                            <exclude>**</exclude>
                        </excludes>
                    </configuration>
                </plugin>
                <plugin>
                    <artifactId>maven-javadoc-plugin</artifactId>
                    <executions>
                        <execution>
                            <id>aggregate-javadocs</id>
                            <phase>package</phase>
                            <goals>
                                <goal>aggregate-jar</goal>
                            </goals>
                            <configuration>
                                <includeDependencySources>true</includeDependencySources>
                                <dependencySourceIncludes>
                                    <dependencySourceInclude>com.ibasco.test:*</dependencySourceInclude>
                                </dependencySourceIncludes>
                                <dependencySourceExcludes>
                                    <dependencySourceExclude>com.ibasco.test:module-three</dependencySourceExclude>
                                </dependencySourceExcludes>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>
                <plugin>
                    <artifactId>maven-shade-plugin</artifactId>
                    <executions>
                        <execution>
                            <phase>package</phase>
                            <goals>
                                <goal>shade</goal>
                            </goals>
                            <configuration>
                                <createSourcesJar>true</createSourcesJar>
                                <shadedArtifactAttached>false</shadedArtifactAttached>
                                <createDependencyReducedPom>true</createDependencyReducedPom>
                                <promoteTransitiveDependencies>true</promoteTransitiveDependencies>
                                <artifactSet>
                                    <includes>
                                        <include>com.ibasco.test:module-one</include>
                                        <include>com.ibasco.test:module-two</include>
                                    </includes>
                                </artifactSet>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>
                <plugin>
                    <groupId>org.codehaus.mojo</groupId>
                    <artifactId>flatten-maven-plugin</artifactId>
                    <executions>
                        <execution>
                            <id>flatten</id>
                            <phase>package</phase>
                            <goals>
                                <goal>flatten</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
            </plugins>
        </build>
    </project>

【讨论】：

实际上我无法再重现该问题。我测试了在阴影之前运行变平，也成功了
stackoverflow.com/users/2977588/%e5%ae%87%e5%ae%99%e4%ba%ba 当您单独构建模块时，这会成为一个问题，但如果构建在同一个解析器中，它不会出现。如果 B -> A 和 -rf B 或 -pl :B 即使 A 在解析器中且未构建，问题也会显示来自 .m2/repo 而不是来自解析器的已发布 pom。
注意到插件管理中的顺序不足以解决，适用的顺序在构建列表中。通常在配置文件中添加 flatten 可能不适合列出 shade 插件。因此，您可能必须使用 shade 在工件的 pom.xml 中列出它，以便能够按文件 2.Aggregator pom 中的顺序列出两者

【解决方案3】：

对我来说，问题是默认参数 createDependencyReducedPom=true 以错误的方式修改 relativePath，父工件无法通过 CI_friendly_version 属性（又名 ${revision}（见下面的快照）解决）

【讨论】：

请分享实际代码而不是截图^^

【解决方案4】：

那么有趣

这看起来工作正常，并展平了阴影 pom 文件而不是根

即使指定了阶段，订单也很重要 - 安装和发布的pom和jar分别是shaded jar和flattened pom

 <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <executions>
                    <execution>
                        <id>shade</id>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <createDependencyReducedPom>true</createDependencyReducedPom>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

<plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>flatten-maven-plugin</artifactId>
                <version>1.2.5</version>
                <configuration>
                    <updatePomFile>true</updatePomFile>
                    <flattenedPomFilename>flatter.pom</flattenedPomFilename>
                </configuration>
                <executions>
                    <execution>
                        <id>flatten22</id>
                        <phase>verify</phase>
                        <goals>
                            <goal>flatten</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>flatten.clean22</id>
                        <phase>clean</phase>
                        <goals>
                            <goal>clean</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>


<plugin>
                <groupId>com.coderplus.maven.plugins</groupId>
                <artifactId>copy-rename-maven-plugin</artifactId>
                <version>1.0</version>
                <executions>
                    <execution>
                        <id>copy-file</id>
                        <phase>verify</phase>
                        <goals>
                            <goal>copy</goal>
                        </goals>
                        <configuration>
                            <sourceFile>flatter.pom</sourceFile>
                            <destinationFile>dependency-reduced-pom.xml</destinationFile>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

【讨论】：