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Sunday, September 25, 2011

Loading a Place Holder Properties file with a Environment Variable

While I was working at Virtusa, we had a requirement of externalizing the DB Configurations in a property.
The property file location was set on an Environment Variable.

We tried the conventional placeholder bean method and tried to append the properties file location with the ${ABC}/db.properties format. But it didn't work the way we wanted it to.

Then after some reading and trial and error I was able to figure out that


<context:property-placeholder location="file:///${XYZ}/DDA/db.properties"/>




Does exactly what we require and we could use the properties in the file within the spring bean configuration using ${property name}.


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