Spring boot profiles example

In this tutorial, we will see about Spring boot profiles.

Need for profiles

Application development is complex process. You might have different environment for application development.

  • Dev
  • SIT
  • QA
  • Prod

We require different configuration based on the environment.

For example: Using a different database or different queues.

Let’s create a simple spring boot application.

Step 1: Go to <a href="https://start.spring.io/">https://start.spring.io/</a> and create spring boot projects as per below screenshot.


Step 2: Import the maven project in eclipse.

step 3: Create a package named "org.arpit.java2blog.controller"
create a controller class named "HelloWorldController.java"

Step 4: Put “message=java2blog” in application.properties.

Step 5: Create a package named “org.arpit.java2blog”
create a class named “SpringBootHelloWorldApplication.java”

Step 6: Run the application
When you run above application, you will get below output:

2018-08-03 10:40:21.649 INFO 27143 — [ main] o.a.java2blog.SpringBootProfileExample : Started SpringBootProfileExample in 4.693 seconds (JVM running for 5.474)
2018-08-03 10:40:36.761 INFO 27143 — [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet ‘dispatcherServlet’
2018-08-03 10:40:36.762 INFO 27143 — [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet ‘dispatcherServlet’: initialization started
2018-08-03 10:40:36.789 INFO 27143 — [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet ‘dispatcherServlet’: initialization completed in 27 ms

Step 7:Go to browser and browse url “http://localhost:8080/welcome”

Spring boot output
As you can see, we are able to fetch “message” from application.properties.

Profiles for environment specific properties

Let’s configuration two profile- dev and prod for demonstration.
You need to create .properties file with application-"$ProfileName".
For example:
For dev profile, you need to crate application-dev.properties, so whatever you put in application-dev.properties, it will override properties from application.properties.
Suppose you need to start qa profile at port “8081”, you can put following entry in application in application-qa.properties

Let’s create two properties file for our application.
For dev profile

For prod profile

Setting active profile

When you run spring boot application, you need to set active profile. There are multiple ways to set active profile.

  1. By using -Dspring.profiles.active=dev in VM Arguments
  2. By using spring.profiles.active=dev in application.properties

Let’s run the application with dev profile now. We will put spring.profiles.active=dev in VM arguments and click on run.

Spring boot dev profile

When you run the application and browse http://localhost:8080/welcome”.

Spring boot dev output

Spring boot @Profile annotation

You can use @Profile annotation in java configuration to create profile based configuration.

Project Structure

Spring boot profile example

Source code

That’s all about Spring boot profiles.


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