Set Spring profile when executing bootRun task with Spring Boot Gradle Plugin

Method

In jvmArgs of bootRun task setting of build.gradle, you can specify the profile in the system property value spring.profiles.active.

build.gradle


//Add settings for the bootRun task
bootRun {
  //Specify the foobar profile
  jvmArgs = ['-Dspring.profiles.active=foobar']
}

Reference:

Operation check

I generated the source code with Spring Initializr and added / deleted / edited it as needed.

This environment

Source code list

├── build.gradle
├── settings.gradle
└── src
    └── main
        ├── java
        │   └── com
        │       └── example
        │           └── demo
        │               └── DemoApplication.java
        └── resources
            ├── application-foobar.properties
            └── application.properties

build.gradle

Build configuration file for Gradle. Adding settings for the bootRun task.

build.gradle


plugins {
  id 'org.springframework.boot' version '2.2.2.RELEASE'
  id 'io.spring.dependency-management' version '1.0.8.RELEASE'
  id 'java'
}

group = 'com.example'
version = '0.0.1'
sourceCompatibility = '11'

repositories {
  mavenCentral()
}

dependencies {
  implementation 'org.springframework.boot:spring-boot-starter-web'
  testImplementation('org.springframework.boot:spring-boot-starter-test') {
    exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
  }
}

test {
  useJUnitPlatform()
}

//Add settings for the bootRun task
bootRun {
  //Specify a profile
  jvmArgs = ['-Dspring.profiles.active=foobar']
}

settings.gradle

The one generated by Spring Initializr is used as it is.

settings.gradle


rootProject.name = 'demo'

DemoApplication.java

A process that returns JSON when the top page is accessed has been added.

package com.example.demo;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.core.env.Environment;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.Map;

@SpringBootApplication
@RestController
public class DemoApplication {

  public static void main(String[] args) {
    SpringApplication.run(DemoApplication.class, args);
  }

  @Autowired
  private Environment env;

  //Returns JSON when accessing the top page
  @RequestMapping("/")
  public ResponseEntity<Map<String, Object>> top() {

    Map<String, Object> body = new HashMap<>();

    //Applicable profile
    body.put("profiles", env.getActiveProfiles());

    // application-*.Value obtained from properties
    body.put("my.sample", env.getProperty("my.sample"));
    body.put("my.message", env.getProperty("my.message"));

    return new ResponseEntity<>(body, HttpStatus.OK);
  }
}

application.properties

The default property settings file. If you do not specify a profile, you can use the values in this file.

my.sample=This is a sample property.
my.message=This is a application.properties.

application-foobar.properties

Property settings file when using the foobar profile. When using the foobar profile, the value in application.properties is overwritten with the value in this file.

my.message=This is a application-foobar.properties.

Operation check

Start Spring Boot with the gradle bootRun command.

$ gradle bootRun

> Task :bootRun

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.2.2.RELEASE)

If you access it with curl from another console etc., JSON will be returned.

If the bootRun task setting of gradle.build is not described, the following JSON will be returned. The value of application.properties is output.

$ curl http://localhost:8080/
{"my.sample":"This is a sample property.","profiles":[],"my.message":"This is a application.properties."}

If jvmArgs = ['-Dspring.profiles.active = foobar'] is described in the bootRun task setting of gradle.build, the following JSON will be returned. The value of application-foobar.properties is output with priority over the value of application.properties.

$ curl http://localhost:8080/
{"my.sample":"This is a sample property.","profiles":["foobar"],"my.message":"This is a application-foobar.properties."}

Reference material

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