Howto reference a System property in a property file ?

[Akamanouche]

Hi,
I have a property file, referenced by a PropertyPlaceholderConfigurer.
At runtime (prod environment), a directory property (called "solutions.outputDirectory") references a directory on disk
My properties file is hosted in maven src\main\resources\service.properties :

[...]
solutions.outputDirectory=/path/to/a/certain/directory
[...]

In test environment, i have a copy of this property file, with alternate values :
hosted in maven src\test\resources\service.properties.

==> I would like the same property ("solutions.outputDirectory") to reference the TMP directory.
Something like :

[...]
solutions.outputDirectory=sys:java.io.tmpdir
[...]

How can i force a property to reference a System property that PropertyPlaceholderConfigurer could interpret (via SPEL ?) dynamically ? Is there a way to do this ?

Thanks in advance
;-)

[Akamanouche]

(found response by myself)

Response is :

[...]
solutions.outputDirectory=${java.io.tmpdir}
[...]

BUT, if any placeholderPrefix has been defined on PropertyPlaceholderConfigurer :
e.g

<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
	<property name="placeholderPrefix" value="service{" />
	<property name="placeholderSuffix" value="}" />
	<property name="locations">
		<list>
			<value>classpath:properties/service.properties</value>
		</list>
	</property>
</bean>

... it MUST be :

[...]
solutions.outputDirectory=service{java.io.tmpdir}
[...]

:-)