How to share a property file between several contexts

I use Spring Framework and Spring Security. There are different places where I need to use the page path. For example, "/mainpath". I place it in /WEB-INF/classes/path.properties. The path should be used in servlet-context.xml and in security-context.xml. If the following is placed in both contexts

<context:property-placeholder location="/WEB-INF/classes/path.properties"/>

it will result in

java.lang.IllegalArgumentException: "Could not resolve placeholder 'main.page' in string value "${main.page}"

The following does not give required result.

<context:property-placeholder location="/WEB-INF/classes/path.properties" ignore-unresolvable="true"/>