Import Spring config file based on property in .properties file

user_184382 0
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In my Spring xml configuration I'm trying to get something like this to work:

<beans>

   <import resource="${file.to.import}" />

   <!-- Other bean definitions -->

</beans>

I want to decide which file to import based on a property in a properties file. I know that I can use a System property, but I can't add a property to the JVM at startup.

Note: The PropertyPlaceHolderConfigurer will not work. Imports are resolved before any BeanFactoryPostProcessors are run. The import element can only resolve System.properties.

Does anyone have a simple solution to this? I don't want to start subclassing framework classes and so on...

Thanks

spring configuration java
10 Answers

If what you want is to specify the imported XML file name outside applicationContext.xml so that you could replace applicationContext.xml without losing the configuration of the imported XML file path, you can just add an intermediate Spring beans XML file, say, confSelector.xml, so that applicationContext.xml imports confSelector.xml and confSelector.xml only contains an <import> element that refers to the suitable custom beans XML file.

Another means that might be of use are XML entities (defined by adding <!ENTITY ... > elements into the DTD declaration at the beginning of XML). These allow importing XML fragments from other files and provide "property placeholder"-like functionality for any XML file.

Neither of these solutions allows you to have the configuration file in Java's .properties format, though.

user_1889860

I'm using Spring 3 and load a properties like that:

<context:property-placeholder location="/WEB-INF/my.properties" />
user_4027310
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