Maven assembly Plugin

External

• The Assembly Plugin http://maven.apache.org/plugins/maven-assembly-plugin
• Assembly Plugin Usage http://maven.apache.org/components/plugins/maven-assembly-plugin/usage.html

Internal

• Maven

Concepts

Assembly

Assembly ID

The assembly ID will become the assembly artifact classifier, present between the version and the extension.

Plugin Execution

The assembly plugin can be executed in isolation, or it can be executed during the build process of the project.

To execute the plugin in isolation:

To execute the plugin as part of the build process, bind the plugin's "single" goal to to the project lifecycle by associating it usually with the "package" phase, as follows:

Once the plug-in is bound to the project lifecycle, simply execute the normal package phase from the default lifecycle to create a project assembly:

mvn package

When this build completes, the assembly file is available in the target directory and has a name similar to the following: Put placeholders: target/sample-1.0-SNAPSHOT-jar-with-dependencies.jar .

Building a Complex Release Artifact

This section describes the procedure of configuring Maven to build one complex release artifact, containing multiple individual artifacts, possibly produced by multiple modules, as well as arbitrary files from the project, dependencies, and so on, or otherwise what is known to Maven as an assembly.

!!!External

• [1]
• [2]
• Sonatype Assemblies [3]
• Assembly Best Practices according to Sonatype [4]

!!!Internal

|[MavenFilesets] |[How to Exclude a File from the Final Artifact|MavenHOW2#HowToExcludeAFileFromTheFinalArtifact]

!!!Overview

An "assembly" is a group of files, directories, and dependencies that are assembled into an archive format and distributed as a project's artifact. A module has only one artifact - usually a JAR - but we may want to distribute that jar together with documentation, source and supporting scripts in the form or an "atomic" archive. The way to do it is to define that archive as an "assembly".

!!!Notes

• The Template:Assembly.xml file should go under Template:Src/main/assembly. It also works if it goes into the Template:Basedir.

!!!Multi-Module Assemblies

|[MavenAssemblyPluginMultiModule]

!!!The simplest way to create a ZIP artifact

The following will create a test site content zip. The assembly plug in is the only "active" plug-in for a sub-module whose whole reason to exist is to create the content zip.

!!pom.xml

{{{ <plugins>

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

}}}

!!assembly.xml

{{{ <assembly>

   <formats>
       <format>zip</format>
   </formats>
   <baseDirectory>.</baseDirectory>
   <includeBaseDirectory>false</includeBaseDirectory>
   <fileSets>
       <fileSet>
           <directory>archimedes-test-site</directory>
       </fileSet>
   </fileSets>

</assembly> }}}

!!!Jar With Dependencies

{{{ <assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"

 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
 <id>jar-with-dependencies</id>
 <formats>
   <format>jar</format>
 </formats>
 <includeBaseDirectory>false</includeBaseDirectory>
 <dependencySets>
   <dependencySet>
     <unpack>true</unpack>
     <scope>runtime</scope>
   </dependencySet>
 </dependencySets>
 <fileSets>
   <fileSet>
     <directory>${project.build.outputDirectory}</directory>
   </fileSet>
 </fileSets>

</assembly> }}}

!!!Create an executable jar

{{{ <project>

 [...]
 <build>
   [...]
   <plugins>
     <plugin>
       <artifactId>maven-assembly-plugin</artifactId>
       <version>2.2-beta-5</version>
       <configuration>
         [...]
         <archive>
           <manifest>
             <mainClass>org.sample.App</mainClass>
           </manifest>
         </archive>
       </configuration>
       [...]
     </plugin>
     [...]

</project>

}}}

!!!Create an assembly file without any suffix

By default, the assembly name is the <projectname>-<assemblyid>.<ext> If I just want it to be <projectname>.<ext>, don't use any {{{

   <id>...</id>

}}} in the assembly descriptor.

!!!Creating two assemblies for the same project

{{{ <plugin>

  <artifactId>maven-assembly-plugin</artifactId>
     <executions>
         <execution>
             <id>jar-with-all-dependencies</id>

<phase>package</phase>

              <goals>
                  <goal>single</goal>
              </goals>
              <configuration>
                  <descriptors>
                     <descriptor>src/main/assembly/jar-with-all-dependencies.xml</descriptor>
                  </descriptors>
                  <archive>
                     <manifest>
                         <mainClass>${exec.main.class}</mainClass>
                     </manifest>
                  </archive>
              </configuration>
          </execution>
          <execution>
              <id>distribution-bundle</id>
              <phase>package</phase>
              <goals>
                    <goal>single</goal>
              </goals>
              <configuration>
                    <descriptors>
                           <descriptor>src/main/assembly/distribution-bundle.xml</descriptor>
                    </descriptors>
              </configuration>
          </execution>
         </executions>
</plugin>

}}}

!!!Directly Specifying the Name of the Assembly Result File

{{{

   <build>
       <plugins>
           <plugin>
               <artifactId>maven-assembly-plugin</artifactId>
               <configuration>
                   <finalName>BLAH-${project.version}</finalName>
                   ...

}}}