Set System Properties in JSF+Spring Application - spring

Question

I am developing a web application using JSF 2.0 ,Spring 3.1.
When I am deploying my application I am getting following error
ERROR [ContextLoader] Context initialization failed
org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'AllProjectDetailsBean' defined in ServletContext resource [/WEB-INF/springApp-spring.xml]: Could not resolve placeholder 'OutputFilePath'
Application Context file
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd ">
<aop:aspectj-autoproxy />
<bean id="placeholderConfig"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
</bean>
<bean id="AllProjectDetailsBean"
class="com.tcs.srl.expertFinder.sections.ProjectDetailsBeanFactory"
factory-method="createInstance">
<constructor-arg index="0" value="${OutputFilePath}" />
</bean>
What I understand from error is when I deploy application the context loads very first time but it fails because it dose not find any property with name OutputFilePath.
That means I have to set system property with the name OutputFilePath before context loads.
Can some tell me how to set system property while deploying jsf application or before context loads.
Or is there any option to remove this error.
Please Help
Thanks