Loading .properties file in a jar from my web-app - spring

Question

I have created a JAR that I need to use in my WEB-APP. Both are created with spring framework. I would like to load a .properties file outside the JAR file, in the main context of the web-application. And I want to do it with the facilities that Spring offers us.
I've tried to do something like this in my spring.xml file inside the JAR:
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<value>/WEB-INF/classes/my.properties</value>
</property>
</bean>
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="triggers">
<bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
<property name="jobDetail" ref="myJob" />
<property name="cronExpression" value="${my.cronExpression}"/>
</bean>
</property>
</bean>
Trying to load my.cronExpression from my.properties file. But without any success.
I always get this error:
Could not resolve placeholder 'my.cronExpression'.
I've tried to change the location with many variants, using classpath:/WEB-INF/classes/my.properties etc...
But I'm not able to load the configuration file.
Thanks for your help.

Answer 1

Use classpath:my.properties - /WEB-INF/classes is root of your classpath.

Answer 2

Try declaring it as follows:
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<value>/WEB-INF/classes/my.properties</value>
</property>
<property name="ignoreUnresolvablePlaceholders">
<value>true</value>
</property>
</bean>

Answer 3

I have gone through your code and want you to try this code snippet
It works well for me :)
<bean id="placeholderProperties"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="file:/WEB-INF/classes/my.properties" />
<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
<property name="ignoreUnresolvablePlaceholders" value="true" />
<property name="order" value="1" />
</bean>