След толкова много опити най-накрая реших проблема си и за да помогна на другите, публикувам тук решението.
Структурата на проекта трябва да бъде такава
и pom.xml трябва да е така
<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>com.client</groupId>
<artifactId>JavaClient</artifactId>
<version>5.2.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>JavaClient</name>
<properties>
<exec.mainClass>com.client.MainApp</exec.mainClass>
<javafx.version>2.2.67</javafx.version>
<fx.home>${java.home}/lib/jfxrt.jar</fx.home>
<javafx.tools.ant.jar>${java.home}/../lib/ant-javafx.jar</javafx.tools.ant.jar>
<javafx-dialogs.jar>${project.basedir}/lib/javafx-dialogs-0.0.1.jar</javafx-dialogs.jar>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<dist.dir>${project.build.directory}/deploy</dist.dir>
<base.dir>${project.basedir}</base.dir>
</properties>
<dependencies>
<dependency>
<groupId>org.oracle</groupId>
<artifactId>javafx</artifactId>
<version>${javafx.version}</version>
<systemPath>${fx.home}</systemPath>
<scope>system</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>xmlpull</groupId>
<artifactId>xmlpull</artifactId>
<version>1.1.3.1</version>
</dependency>
<dependency>
<groupId>xpp3</groupId>
<artifactId>xpp3_min</artifactId>
<version>1.1.4c</version>
</dependency>
<dependency>
<groupId>com.thoughtworks.xstream</groupId>
<artifactId>xstream</artifactId>
<version>1.4.7</version>
</dependency>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>javafx-dialogs</artifactId>
<version>0.0.1</version>
<scope>system</scope>
<systemPath>${javafx-dialogs.jar}</systemPath>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.0.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.9</version>
<configuration>
<includes>
<include>**/*Test.class</include>
</includes>
</configuration>
</plugin>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.6</version>
<executions>
<execution>
<id>create-temp-jar</id>
<phase>prepare-package</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<target xmlns:fx="javafx:com.sun.javafx.tools.ant">
<taskdef uri="javafx:com.sun.javafx.tools.ant" resource="com/sun/javafx/tools/ant/antlib.xml"
classpath="${project.basedir}:${javafx.tools.ant.jar}:${fx.home}" />
<fx:jar
destfile="${project.build.directory}/${project.build.finalName}-temp">
<fx:application id="fxApp" name="${project.name}"
mainClass="${exec.mainClass}" />
<fx:fileset dir="${project.build.directory}/classes" />
<manifest>
<attribute name="Implementation-Vendor" value="${app.vendor}" />
<attribute name="Implementation-Title" value="${app.name}" />
<attribute name="Implementation-Version" value="1.0" />
</manifest>
</fx:jar>
<attachartifact
file="${project.build.directory}/${project.build.finalName}-temp.jar"
classifier="temp" />
</target>
</configuration>
</execution>
<execution>
<id>create-deployment-bundle</id>
<phase>install</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<target xmlns:fx="javafx:com.sun.javafx.tools.ant">
<taskdef uri="javafx:com.sun.javafx.tools.ant" resource="com/sun/javafx/tools/ant/antlib.xml"
classpath="${project.basedir}:${javafx.tools.ant.jar}:${fx.home}" />
<fx:deploy nativeBundles="all" width="100" height="100"
outdir="${dist.dir}" embedJNLP="true" outfile="${project.build.finalName}"
verbose="true">
<fx:application name="${project.build.finalName}"
mainClass="${exec.mainClass}" />
<fx:resources>
<fx:fileset dir="${project.build.directory}" includes="${project.build.finalName}.jar" />
</fx:resources>
<fx:info title="${project.build.finalName}" vendor="NUAXIS"
description="Test built from Java executable jar" />
<fx:permissions elevated="true" />
</fx:deploy>
</target>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2.1</version>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptors>
<descriptor>src/main/assembly/jar-with-dependencies.xml</descriptor>
</descriptors>
<finalName>${project.build.finalName}</finalName>
<appendAssemblyId>false</appendAssemblyId>
<archive>
<manifestEntries>
<JavaFX-Version>${javafx.version}</JavaFX-Version>
<JavaFX-Application-Class>${exec.mainClass}</JavaFX-Application-Class>
<Main-Class>com/javafx/main/Main</Main-Class>
</manifestEntries>
</archive>
</configuration>
</plugin>
</plugins>
</build>
</project>
Сега ще ви обясня грешката си. разгледайте внимателно частта за изграждане на Въпроса. в плъгина ant-run, когато влезем в задачата fx:deploy тук, ще откриете, че имам въвеждане на пътя към класа. обърках тази част, която беше толкова проста. виж сега в моя Pom тук. пътят на класа вече е актуализиран. първо споменавам основната директория, след това пътя на ant-fx-plugin, след това пътя на jfxrt.jar. jfxrt може да не е необходим. след това премахнах секцията за зависимости на плъгина. това е критично. ако не премахна този раздел, тогава моят плъгин за antrun винаги гледа в предоставените от maven зависимости, но не и в ant-classpath. в ant-classpath реда е много много важен. вашият basedir винаги трябва да идва преди ant-run.jar. това е
Надявам се, че това ще бъде полезно за хората, които ще се сблъскат с този проблем.