No puedo empaquetar mi proyecto a un jar con dependencias

Buenos días compañeros.

Mi pregunta es como podría generar un ejecutable de un proyecto maven???.
He leido que basta con editar el archivo pom.xml pero al editarlo y poner el código para generarlo me sale un error del archivo de configuración de Spring.
Aqui dejo mi pom.xml donde pongo mis plugins para poder empaquetar mi jar completo.

El archivo de configuración de Spring es el siguiente:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:cache="http://www.springframework.org/schema/cache"
       xmlns:p="http://www.springframework.org/schema/p"
   
       xsi:schemaLocation="http://www.springframework.org/schema/beans <a href="http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
" title="http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
">http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
</a>          <a href="http://www.springframework.org/schema/aop" title="http://www.springframework.org/schema/aop">http://www.springframework.org/schema/aop</a> <a href="http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
" title="http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
">http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
</a>          <a href="http://www.springframework.org/schema/context" title="http://www.springframework.org/schema/context">http://www.springframework.org/schema/context</a> <a href="http://www.springframework.org/schema/context/spring-context-3.0.xsd
" title="http://www.springframework.org/schema/context/spring-context-3.0.xsd
">http://www.springframework.org/schema/context/spring-context-3.0.xsd
</a>          <a href="http://www.springframework.org/schema/tx" title="http://www.springframework.org/schema/tx">http://www.springframework.org/schema/tx</a> <a href="http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
" title="http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
">http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
</a>          <a href="http://www.springframework.org/schema/util" title="http://www.springframework.org/schema/util">http://www.springframework.org/schema/util</a> <a href="http://www.springframework.org/schema/util/spring-util-3.0.xsd
" title="http://www.springframework.org/schema/util/spring-util-3.0.xsd
">http://www.springframework.org/schema/util/spring-util-3.0.xsd
</a>         <a href="http://www.springframework.org/schema/cache" title="http://www.springframework.org/schema/cache">http://www.springframework.org/schema/cache</a> <a href="http://www.springframework.org/schema/cache/spring-cache.xsd
">
" title="http://www.springframework.org/schema/cache/spring-cache.xsd
">
">http://www.springframework.org/schema/cache/spring-cache.xsd
">
</a>    <context:annotation-config />  
    <context:component-scan base-package="paquete.com" />  
    <tx:annotation-driven transaction-manager="transactionManager"/>  
   
   
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="locations">  
            <list>  
                <value>classpath:hibernate.properties</value>
                <value>hibernate.properties</value>
            </list>  
        </property>  
    </bean>
    <bean id="dataSource" depends-on="propertyConfigurer"  class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${hibernate.connection.driver_class}" />
        <property name="url" value="${hibernate.connection.url}" />
        <property name="username" value="${hibernate.connection.username}" />
        <property name="password" value="${hibernate.connection.password}" />
    </bean>
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">  
        <property name="dataSource" ref="dataSource" />          
        <property name="configLocation" value="classpath:${hibernate.cfg.file}" />        
    </bean>
    <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">          
        <property name="sessionFactory" ref="sessionFactory" />          
    </bean>
</beans>

El error que me sale al tratar de ejecutar el jar con dependiencias es el siguiente:

Configuration problem: Unable to locate Spring NamespaceHandler for XML schema namespace [http://www.springframework.org/schema/context]
Offending resource: class path resource [SpringXMLConfig.xml]

at org.springframework.beans.factory.parsing.FailFastProblemReporter.error(FailFastProblemReporter.java:68)
at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:85)
at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:80)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.error(BeanDefinitionParserDelegate.java:284)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1335)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1328)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:135)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:93)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:143)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:178)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:149)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:212)
at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:126)
at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:92)
at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:130)
at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:467)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:397)
at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:83)
at com.pos.upgradepos_server.utilidades.SpringContextLoad.getContext(SpringContextLoad.java:20)
at com.pos.upgradepos_server.vistas.Main.IniciarServicios(Main.java:26)
at com.pos.upgradepos_server.vistas.Main.main(Main.java:21)

Espero me puedan apoyar.

De antemano gracias.