Package Dll in Jar using Maven- single goal - maven

Question

I have added a DLL in my maven project as dependency like this :
<dependency>
<groupId>com.test.dll</groupId>
<artifactId>myDll</artifactId>
<version>0.1</version>
<type>dll</type>
</dependency>
When I try to execute maven:install
It is giving me this error:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:2.2-
beta-5:single (jar-with-dependencies) on project testApp: Failed to create
assembly: Error adding file-set for 'com.test.dll:myDll:dll:0.1' to archive: Error
adding archived file-set. PlexusIoResourceCollection not found for: C:\Users\USER\.m2
\repository\com\test\dll\myDll\0.1\myDll-0.1.dll: No such archiver: 'dll'
What Am I doing wrong here??
Update
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>sign</goal>
</goals>
</execution>
</executions>
<configuration>
<keystore>src/main/keystore/mykey.keystore</keystore>
<alias>aliasname</alias>
<storepass>passw0rd</storepass>
<verify>true</verify>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<id>jar-with-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<archive>
<manifest>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<appendAssemblyId>false</appendAssemblyId>
</configuration>
</execution>
</executions>
</plugin>
</plugins>

Answer 1

The problem here is the jar-with-dependencies descriptor. The descriptor unpacks all dependencies into a directory and packages this directory into a new JAR file. However, it cannot unpack a DLL file (that's the "No such archiver" error message). To get this working, you need to define your own assembly descriptor:
<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
<id>assembly-with-dll</id>
<formats>
<format>jar</format>
</formats>
<includeBaseDirectory>false</includeBaseDirectory>
<dependencySets>
<!-- package the regular dependencies -->
<dependencySet>
<outputDirectory>/</outputDirectory>
<useProjectArtifact>true</useProjectArtifact>
<unpack>true</unpack>
<scope>runtime</scope>
<!-- exclude the DLL -->
<excludes>
<exclude>com.example:my-dll</exclude>
</excludes>
</dependencySet>
<!-- package the DLLs -->
<dependencySet>
<outputDirectory>/</outputDirectory>
<includes>
<include>com.example:my-dll</include>
</includes>
</dependencySet>
</dependencySets>
</assembly>
Provided, that the descriptor above resides in src/main/assembly, the configuration of the maven-assembly-plugin looks as follows:
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<id>jar-with-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<descriptor>src/main/assembly/assembly.xml</descriptor>
<appendAssemblyId>false</appendAssemblyId>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>

Answer 2

There is a piece of information here : Maven Dll Dependency Problem.
To solve this issue, exlude dll from your assembly :
<excludes>
<exclude>*:dll*</exclude>
</excludes>
Last time I had to create a executable jar with dependencies, I put them out of the jar, in a lib directory.
DLL must be :
either in application classpath (like server/lib for a server)
or in the OS classpath (C:\Windows\system32 for instance)
After reading your pom and dependecy file set, I may be able to be more accurate :)

Answer 3

To add to Stefan's answer, I don't think you want to do a jar-with-dependencies packaging for this project of yours. You should look at using one of the bin packaging (like .zip or tar.gz)