Pick up the environment specific properties file at run time

Question

I want to pick up the environment specific properties file at run time from class path

I am still learning Spring Boot, we can do it using environment variables or vm arguments or put in application.properties in maven run configuration

However we will always have to change the code at the time of deployment for a specific env if we put it application.properties.

I want to pick it up at run time without modifying the code at all.

yeah definitely, i don't want to change it every time i deploy to different environments. — SOG
– SOG, Commented Jul 31, 2019 at 5:52

fiveobjects · Accepted Answer · 2019-07-31 08:06:38Z

Use spring profiles. Create application.properties for each profile like below:

application-dev.properties application-prod.properties

Keep the application.properties as the master copy. If a property is missing in the profile-specific file then it will be picked from the master application.properties file as a fallback.

Then either set the following in application.properties or set as an environment variable or as a system property to activate a profile:

In application.properties:

spring.profiles.active=dev

Environment variable:

export spring_profiles_active=dev

System Property:

java -jar -Dspring.profiles.active=dev xyzapp.jar

PratapK · Accepted Answer · 2019-07-31 05:50:17Z

0

I guess you can try System.setProperty() to set something at application level. But if you don't reset it will remain throughout application.

answered Jul 31, 2019 at 5:50

PratapK

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2 Comments

SOG Over a year ago

How can I do that?

PratapK Over a year ago

System.getProperty(key) will be used in java to fetch something set at application level and System.SetProperty(key,value) will be used in java to set something in application. Here key is the property u want to fetch or update.

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