Spring boot: Activate profiles programmatically

There are couple of ways to set the active profiles in spring boot application.

Before running your application,

a.   You can call 'SpringApplication.setAdditionalProfiles(…​)' method,

b.   Activate profiles by using Spring’s ConfigurableEnvironment interface

Using 'SpringApplication.setAdditionalProfiles(…​)' method

Below statements set dev, prod profiles to the application.

SpringApplication application = new SpringApplication(Application.class);

application.setAdditionalProfiles("dev","prod");

ConfigurableApplicationContext applicationContext = application.run(args);

Find the below working example.

DevProfile.java

package com.sample.myApp.model;

import org.springframework.context.annotation.Profile;
import org.springframework.stereotype.Component;

@Component
@Profile("dev")
public class DevProfile {

 public DevProfile() {
  System.out.println("********************************");
  System.out.println("Dev profile is called");
  System.out.println("********************************");
 }
}

ProdProfile.java

package com.sample.myApp.model;

import org.springframework.context.annotation.Profile;
import org.springframework.stereotype.Component;

@Component
@Profile("prod")
public class ProdProfile {
 public ProdProfile() {
  System.out.println("********************************");
  System.out.println("Prod profile is called");
  System.out.println("********************************");
 }
}

TestProfile.java

package com.sample.myApp.model;

import org.springframework.context.annotation.Profile;
import org.springframework.stereotype.Component;

@Component
@Profile("test")
public class TestProfile {
 public TestProfile() {
  System.out.println("********************************");
  System.out.println("Test profile is called");
  System.out.println("********************************");
 }
}

Application.java

package com.sample.myApp;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class Application {

 public static void main(String[] args) {
  SpringApplication application = new SpringApplication(Application.class);
  application.setAdditionalProfiles("dev","prod");
  ConfigurableApplicationContext applicationContext = application.run(args);
  applicationContext.close();
 }

}

When you ran ‘Application.java’, you can able to see below messages in the console.

********************************
Dev profile is called
********************************
********************************
Prod profile is called
********************************

Project structure looks like below.

Activate profiles by using Spring’s ConfigurableEnvironment interface

You can also activate the profile using 'ConfigurableEnvironment'.

@Autowired

private ConfigurableEnvironment env;

...

env.setActiveProfiles("someProfile");

Application.java

package com.sample.myApp;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.StandardEnvironment;

@SpringBootApplication
public class Application {

 public static void main(String[] args) {
  SpringApplication application = new SpringApplication(Application.class);

  ConfigurableEnvironment environment = new StandardEnvironment();
  environment.setActiveProfiles("dev", "prod");

  application.setEnvironment(environment);

  ConfigurableApplicationContext applicationContext = application.run(args);
  
  applicationContext.close();
 }

}

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