PropertyPlaceholderConfigurer reads from XML File (Apache Commons Configuration)

Question

Is there a possibility to configure the Spring PropertyPlaceholderConfigurer to read from properties.xml, via Apache Commons Configuration?

Answer 1

The easiest way (maybe not the nicest though) would be to subclass the PropertyPlaceholdeConfigurer, load the commons configuration there and then pass it to the superclass:

public class TestPlaceholderConfigurer extends PropertyPlaceholderConfigurer
{
    public TestPlaceholderConfigurer()
    {
        super();
    }

    @Override
    protected void processProperties(ConfigurableListableBeanFactory beanFactoryToProcess, Properties props)
            throws BeansException
    {
        XMLConfiguration config = new XMLConfiguration("config.xml");
        Properties commonsProperties = config.getProperties("someKey")
        // Or something else with the configuration
        super.processProperties(beanFactoryToProcess, commonsProperties);
    }
}

Then you just use this class as the placeholderConfig: