How to configure maven:assembly root path in the jar

Question

Here is the pom.xml

<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>org.springframework.webflow</groupId>     <artifactId>spring-js-resources-thin</artifactId>     <version>2.2.1.RELEASE</version>     <name>Spring js lib</name>     <description>Spring javascript library without dojo</description>     <build>         <plugins>             <plugin>                 <artifactId>maven-assembly-plugin</artifactId>                 <version>2.2.1</version>                 <configuration>                     <descriptors>                         <descriptor>src/main/assembly/assembly.xml</descriptor>                     </descriptors>                 </configuration>             </plugin>         </plugins>     </build> </project> 

and here is the assembly.xml

<assembly>     <id>js-jar</id>     <formats>         <format>jar</format>     </formats>     <fileSets>         <fileSet>             <directory>src/main/resources/</directory>               <outputDirectory>/</outputDirectory>             <includes>                 <include>META-INF/**/*</include>             </includes>         </fileSet>     </fileSets> </assembly> 

The problem is, everytime I open the generated jar file(spring-js-resources-thin-2.2.1.RELEASE-js-jar.jar), the root folder is always named as artifactid-version(spring-js-resources-thin-2.2.1.RELEASE), then the META-INF.

I wonder there is anyway that I can build the jar file with the file name artifactid-version.jar, but WITHOUT the artifactid-version in the class path, just like every jar in the maven repository. I think there should be an option or a way to name the <outputDirectory>.

Answer 1

You have to tell maven-assembly-plugin not to include the base directory within the archive which can be achieved by using the following:

<assembly>     <id>js-jar</id>     <formats>         <format>jar</format>     </formats>     <includeBaseDirectory>false</includeBaseDirectory>     <fileSets>         <fileSet>             <directory>src/main/resources/</directory>               <outputDirectory>.</outputDirectory>             <includes>                 <include>META-INF/**/*</include>             </includes>         </fileSet>     </fileSets> </assembly> 

And the suggestion about using maven-jar-plugin is very good, cause it looks a little bit that you are misusing the maven-assembly-plugin.

In the most recent versions of maven-assembly-plugin you should . as the root folder. If you use / you will get a warning.