Override Properties file in Spring WebApp at Runtime

Question

I am loading properties file in my Spring WebApplication using PropertyPlaceholderConfigurer as below:

Answer 1

I think that working with multiple propertyPlaceholders is not a goog idea. I had a lot of problems when two xml configs, in the same context, loads each properties and they try cross-use them.

If you want to externalize a properties file, I would suggest a JNDI property:

    
        
            classpath:db.properties
            classpath:mail.properties
            ${java:com/env/myApp/externalProperties}
        
    

Where the value of this JNDI would be: "file:/path-to-propertiesFile".

In this way you only need one propertyePlaceholder. Also note that by putting the external file as last location, if you have duplicate keys, spring will retain only the last one.