如何使用Maven组件插件与多模块maven项目

Question

我是maven的新手,花了大约3天时间使用汇编插件生成zip文件,参考http://www.petrikainulainen.net/programming/tips-and-tricks/creating-a-runnable-binary-distribution-with- maven-assembly-plugin /我的项目是多模块的,所以我也提到使用Maven程序集插件管理多模块依赖项

我还有几个效率低下的问题.下面是assembly.xml(我从第一个链接继承)

 <assembly>
<id>bin</id>
<!-- Generates a zip package containing the needed files -->
<formats>
    <format>zip</format>
</formats>

<!-- Adds dependencies to zip package under lib directory -->
<dependencySets>
    <dependencySet>
        <!-- Project artifact is not copied under library directory since it is 
            added to the root directory of the zip package. -->
        <useProjectArtifact>false</useProjectArtifact>
        <outputDirectory>lib</outputDirectory>
        <unpack>false</unpack>

    </dependencySet>
</dependencySets>
<moduleSets>
    <moduleSet>

        <!-- Enable access to all projects in the current multimodule build! <useAllReactorProjects>true</useAllReactorProjects> -->

        <!-- Now, select which projects to include in this module-set. -->
        <includes>
            <include>com.XX:YY-main</include>
        </includes>

        <!--<binaries> <outputDirectory>YY-main/target</outputDirectory> <unpack>false</unpack> 
            </binaries> -->
    </moduleSet>
</moduleSets>
<fileSets>
    <!-- Adds startup scripts to the root directory of zip package. The startup 
        scripts are located to src/main/scripts directory as stated by Maven conventions. -->
    <fileSet>
        <directory>${project.build.scriptSourceDirectory}</directory>
        <outputDirectory>conf</outputDirectory>
        <includes>
            <include>*</include>
        </includes>
    </fileSet>
    <fileSet>
        <directory>${project.build.directory}</directory>
        <outputDirectory></outputDirectory>
        <includes>
            <include>log4j.properties</include>
        </includes>
    </fileSet>
    <!-- adds jar package to the root directory of zip package -->
    <fileSet>
        <directory>${project.build.directory}</directory>
        <outputDirectory></outputDirectory>
        <includes>
            <include>*with-dependencies.jar</include>
        </includes>
    </fileSet>
</fileSets>

下面是pom.xml(主要或主要)

 <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-assembly-plugin</artifactId>
            <version>2.4</version>
             <configuration>                    <descriptors>
              <descriptor>YY-main/src/main/assembly/assembly.xml</descriptor>   
         <!-- <descriptor>DummyAssembly.xml</descriptor> -->

                </descriptors>
            </configuration>
        </plugin>   

问题:

1)由于在主pom中引用了assembly.xml,因此所有子模块也都被压缩.如何仅指定要压缩的某些子模块,而忽略所有其他子模块.我试图将YY-main/src/main/assembly/assembly.xml从main pom移动到child/submodule pom,并在main中使用dummyassembly.xml,它什么都不做.但这不起作用(可能是因为dummyassembly.xml缺少一些必需的行).尝试了一些东西,但似乎没有任何作用

2)同样在assembly.xml(dependencyset)中,它将所有库复制到"lib"文件夹.我怎么能避免这种情况.我再次根据http://maven.apache.org/plugins/maven-assembly-plugin/assembly.html#class_dependencySet尝试了一些事情(排除..)但没有任何效果.

有人可以向我提供具体的陈述,我应该在我的pom或汇编文件中更改以解决1和2谢谢

Answer 1

您应该更改的基本操作是创建一个单独的模块,您可以在其中执行包装,如下所示.

   +-- root (pom.xml)
        +--- mod-1 (pom.xml)
        +--- mod-2 (pom.xml)
        +--- mod-assembly (pom.xml)

mod-assembly遗嘱中的pom 看起来像这样:

<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>org.test.parent</groupId>
    <artifactId>root</artifactId>
    <version>1.0.0-SNAPSHOT</version>
  </parent>

  <artifactId>dist</artifactId>
  <packaging>pom</packaging>

  <name>Packaging Test : Distribution</name>

  <dependencies>
    <dependency>
      <groupId>${project.groupId}</groupId>
      <artifactId>module-one</artifactId>
      <version>${project.version}</version>
    </dependency>
    <dependency>
      <groupId>${project.groupId}</groupId>
      <artifactId>module-two</artifactId>
      <version>${project.version}</version>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <artifactId>maven-assembly-plugin</artifactId>
        <executions>
          <execution>
            <id>make-bundles</id>
            <goals>
              <goal>single</goal>
            </goals>
            <phase>package</phase>
            <configuration>
              <descriptors>
                <descriptor>proj1-assembly.xml</descriptor>
              </descriptors>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

</project>

这将解决在每个子节点中运行maven-assembly-plugin的问题以及虚拟描述符的问题.在这里你可以找到这种结构的真实例子.

此外,将模块放在一个文件夹中,将依赖项放在另一个文件夹中,您可以使用如下所示的程序集描述符:

  <id>bin</id>
  <formats>
    <format>zip</format>
  </formats>
  <includeBaseDirectory>false</includeBaseDirectory>
  <dependencySets>
    <dependencySet>
          <useProjectArtifact>false</useProjectArtifact>
          <useTransitiveDependencies>true</useTransitiveDependencies>
          <outputDirectory>lib</outputDirectory>
          <unpack>false</unpack>
          <excludes>
            <exclude>${project.groupId}:*:*</exclude>
          </excludes>
      </dependencySet>
  </dependencySets>
  <moduleSets>
    <moduleSet>
      <useAllReactorProjects>true</useAllReactorProjects>
      <binaries>
        <outputDirectory>modules</outputDirectory>
        <unpack>false</unpack>
      </binaries>
    </moduleSet>
  </moduleSets>

Answer 2

我认为如何使用 Maven 组装多模块项目这个帖子可能会用一个例子来回答你的问题。

我对你的问题的回答：

1）您应该在父pom中的build和pluginManagement标签中添加Assembly插件，以便在模块中重用它；上面提到的帖子是关于如何做到这一点的一个很好的例子。您还可以查看在线书籍“Maven：完整参考”的8.6 最佳实践章节，主题 8.6.2。

2)排除标签可能很棘手。再次查看在线书籍“Maven：完整参考”的8.5 控制程序集内容章节。例如，关于dependencySets 的子主题 8.5.4提到了如何微调 dependencySets 的依赖项包含和排除；同样，子主题 8.5.5 现在是关于moduleSets 的，展示了如何在该上下文中使用它。