RE: [Springframework-developer] PropertyPlaceholderConfigurer and *-servlet.xml

[Juergen H. <ju...@in...>]

PropertyPlaceholderConfigurer is an implementation of the
BeanFactoryPostProcessor interface: This interface and its sibling
BeanPostProcessor just apply to the BeanFactory that defines them, that is,
to the application context that defines them.

If you combine multiple config files into a single contextConfigLocation, a
PropertyPlaceholderConfigurer defined in any of the files will apply to all
of the files, because they are loaded into a single application context.

However, a DispatcherServlet has its own application context, just using the
root web application context as parent. Therefore, it needs to define its
own BeanFactoryPostProcessors and/or BeanPostProcessors, in this case its
own PropertyPlaceholderConfigurer.

I believe that this is the better general solution: Each application context
might want to resolve its placeholders against its own properties files,
where applying PropertyPlaceholderConfigurer from parent contexts would
interfere.

Juergen


-----Original Message-----
From: spr...@li...
[mailto:spr...@li...]On Behalf
Of Magnus Heino
Sent: Tuesday, February 08, 2005 3:56 PM
To: spr...@li...
Subject: [Springframework-developer] PropertyPlaceholderConfigurer and
*-servlet.xml



Hi.

How come a PropertyPlaceholderConfigurer defined in applicationContext.xml
does not replace properties in *-servlet.xml files? I have to cut&paste
the bean definition of PropertyPlaceholderConfigurer to my app-servlet.xml
file.

I can reference all other beans in app-servlet.xml that are defined in
applicationContext.xml, but is seems as if the
PropertyPlaceholderConfigurer is not seen by the app-servlet.xml

Is this behaviour documented and ok, or is this a bug?

/Magnus


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