How to build fat jar with maven?

Question

Ivy offers the possibility to access maven repositories and download artifacts from there. There are only pom files in those repositories and no ivy.xml.

They can be retrieved with an ivy resolver that runs in m2compatible mode.

<ibiblio name="maven2" m2compatible="true"/>

Especially for this Use-case I want to know:

1. which scopes are available by default and what artifacts will they offer
2. How is a maven scoped mapped to an ivy conf / configuration?

Answer 1

Add following plugin to your pom.xml

    </configuration>
    <executions>
        <execution>
            <id>assemble-all</id>
            <phase>package</phase>
            <goals>
                <goal>single</goal>
            </goals>
        </execution>
    </executions>
</plugin>
</plugins>
</build>

After configuring this plug-in, running mvn package will produce two jars: one containing just the project classes, and a second fat jar with all dependencies with the suffix "-jar-with-dependencies".

if you want correct classpath setup at runtime then also add following plugin

   <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <configuration>
            <archive>
                <manifest>
                    <addClasspath>true</addClasspath>
                    <mainClass>fully.qualified.MainClass</mainClass>
                </manifest>
            </archive>
        </configuration>
    </plugin>