Maven: assembly-plugin is not run at all

java, maven, packaging

Solution

I would recommend to create a uberjar by using the maven-shade-plugin, cause it's intention is exactly that purpose. You can do that with the maven-assembly-plugin as well.

So after taking a look into your pom i understand the problem. First you defined the maven-assembly-plugin in the pluginManagement block which will NOT execute a plugin furthermore you have defined the maven-assembly-plugin as a dependency separately which is superfluous. Which means simply remove the following from your pom:

<dependency>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-assembly-plugin</artifactId>
   <version>2.3</version>
   <type>maven-plugin</type>
</dependency>

You should define the maven-assembler-plugin like this:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-assembly-plugin</artifactId>
            ...all your configuration here..
        </plugin>
    </plugins>
</build>

Furthermore i've seen many repository definition which should be handled by repository manager instead. About the repositories in your pom i can recommend reading the sonatype information furthermore you should think about some else will use the project behind a proxy etc. than he has to change you pom to get i working or can't use it cause you defined repositories in your pom he can't reach.

Problem

I am pretty new to Maven, tried to learn a couple of times before and figured I was better off without Maven. Now, (un)fortunately I have to use Maven in a project I'd like to contribute to. My problem at this point is regarding the packaging. I'd like to produce a self-contained (aka "fat") jar with all dependencies included, and a colleague who's played around with Maven helped me out with the pom file. I have checked his pom files, as well as samples here on SO. The xml looks legit but the plugin is not run at all. Note that I get no errors, everything goes fine except I get no "fatjar". Any ideas what might be the cause of this problem? Below is the relevant portion of the pom.xml. I have seen contradicting code samples with regards to positioning of `<configuration>` and `<executions>` tags, tried pretty much every variation I have found, still no joy. ``` <plugin> <artifactId>maven-assembly-plugin</artifactId> <version>2.3</version> <executions> <execution> <id>make-jar-with-dependencies</id> <!-- this is used for inheritance merges --> <phase>package</phase> <!-- bind to the packaging phase --> <goals> <goal>single</goal> </goals> </execution> </executions> <configuration> <finalName>ProjectName</finalName> <appendAssemblyId>true</appendAssemblyId> <descriptorRefs> <descriptorRef>jar-with-dependencies</descriptorRef> </descriptorRefs> <archive> <manifest> <mainClass>org.mydomain.ProjectName</mainClass> <addClasspath>true</addClasspath> </manifest> </archive> </configuration> </plugin> ``` Edit_1 the console output from `mvn clean package` as asked by @khmarbaise ``` [INFO] [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ myproject --- [INFO] Deleting /home/user/workspace/project/target [INFO] [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ myproject --- [debug] execute contextualize [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] Copying 41 resources [INFO] [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ myproject --- [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent! [INFO] Compiling 292 source files to /home/user/workspace/project/target/classes [INFO] [INFO] --- maven-resources-plugin:2.5:testResources (default-testResources) @ myproject --- [debug] execute contextualize [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] skip non existing resourceDirectory /home/user/workspace/project/src/test/resources [INFO] [INFO] --- maven-compiler-plugin:2.3.2:testCompile (default-testCompile) @ myproject --- [INFO] Nothing to compile - all classes are up to date [INFO] [INFO] --- maven-surefire-plugin:2.10:test (default-test) @ myproject --- [INFO] No tests to run. [INFO] Surefire report directory: /home/user/workspace/project/target/surefire-reports ------------------------------------------------------- T E S T S ------------------------------------------------------- Results : Tests run: 0, Failures: 0, Errors: 0, Skipped: 0 [INFO] [INFO] --- maven-jar-plugin:2.3.2:jar (default-jar) @ myproject --- [INFO] Building jar: /home/user/workspace/project/target/myproject-2.0.jar [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 12.210s [INFO] Finished at: Thu Jun 07 11:45:14 CEST 2012 [INFO] Final Memory: 18M/184M [INFO] ------------------------------------------------------------------------ ```

Original source