Maven – Gerar uma distribuição com suas dependências / Gerar um FatJar / Configurar o JavaExec / Configurar Manifest

Segue um script de configuração para compilar projetos java e gerar uma distribuição com todas dependências, com opcional de fatJar.
– Configurar o Manifest
– Configurar a execução pela IDE através do type: JavaExec
– Gerar uma distribuição com as dependências dentro da pasta libs/
– Gerar uma distribuição fatJar
– Maven Can’t execute jar- file: “no main manifest attribute”

ARQUIVO POM.XML:

<?xml version="1.0" encoding="UTF-8"?>
<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">
    
    <name>NomeDoMeuProjeto</name>
    
    <modelVersion>4.0.0</modelVersion>
    <groupId>br.com.helpdev</groupId>
    <artifactId>NomeDoMeuProjeto</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <!--Versão java source e target-->
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <!-- java.mainClass: Java main Class -->
        <java.mainClass>br.com.helpdev.teste.Main</java.mainClass>
    </properties>
    
    <dependencies>
        <dependency>
            <groupId>xxxxxxx</groupId>
            <artifactId>xxxxxxxx</artifactId>
            <version>xxxxxx</version>
        </dependency>
         <dependency>
            <groupId>xxxxxxx</groupId>
            <artifactId>xxxxxxxx</artifactId>
            <version>xxxxxx</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!-- FATJAR -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.4.1</version>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>libs/</classpathPrefix>
                            <mainClass>${java.mainClass}</mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            
            <!-- JAR EXTERNAL LIBS -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>libs/</classpathPrefix>
                            <mainClass>${java.mainClass}</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.4</version>
                <executions>
                    <execution>
                        <id>copy</id>
                        <phase>install</phase>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>
                                ${project.build.directory}/libs
                            </outputDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>