CODEWITHSUNDEEP
javaspringspring-properties
forhas
forhas

Reputation: 11991

Custom Property Management with Spring 4.x

Reading this and that I could easily customize my environment in a web-app.

My customization is pretty simple, I have some property files packaged in my deployable war file and I would like to have a local properties file on my web-server machine that will override those properties in case of overlap. To do that I implemented the ApplicationContextInitializer interface, loaded my local properties file and used the addFirst method of my environment. This made sure my local file overrides the properties files packed in my war.

This worked perfectly. Now I would like to do the same in a java-spring process (not a web-app), How can I do that?

The best solution I have found so far is to add a method to my configuration class and annotate it with the @PostConstruct annotation. This method does exactly what the initialize method of ApplicationContextInitializer.

This solution doesn't serve my needs since I have some beans that are loaded conditionally and this (the conditional annotation code) happens before my @postConstruct method (which is not good since the conditional loading is based upon my properties).

Upvotes: 1

Views: 779

Answers (2)

forhas
forhas

Reputation: 11991

I got over it by loading multiple property-sources:

@Configuration
@ComponentScan("com.company.project")
@PropertySources({ @PropertySource(value = "classpath:/my-jar-properties-file.properties", ignoreResourceNotFound = false),
    @PropertySource(value = "file:/path/to/file/local.filesystem.properties.file.properties", ignoreResourceNotFound = false) })
public class MyConfiguration { ... }

This way the last properties file will override the previous ones, so simple..

Upvotes: 0

Antony Kovlyashenko
Antony Kovlyashenko

Reputation: 46

For properties management you may use PropertyPlaceholderConfigurer, which enables you to load property files in appropriate order with overrides. In XML form your config will look like this:

<bean id="propertiesConfigurer" 
      class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="ignoreResourceNotFound" value="true" />
    <property name="locations">
        <list>
            <value>classpath:jar.file.properties</value>
            <value>classpath:overrides.properties</value>
        </list>
    </property>
</bean>

Property "ignoreResourceNotFound" will defend application from startup exceptions when "overrides.properies" is missing.

Upvotes: 0

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