Setting the default active profile in Spring-boot

We to faced similar issue while setting `spring.profiles.active` in java.

This is what we figured out in the end, after trying four different ways of providing `spring.profiles.active`.

In `java-8`
```
$ java --spring.profiles.active=dev -jar my-service.jar
Gives unrecognized --spring.profiles.active option.
```
```
$ java -jar my-service.jar --spring.profiles.active=dev
# This works fine
```
```
$ java -Dspring.profiles.active=dev -jar my-service.jar
# This works fine
```
```
$ java -jar my-service.jar -Dspring.profiles.active=dev
# This doesn't works
```

In `java-11`
```
$ java --spring.profiles.active=dev -jar my-service.jar
Gives unrecognized --spring.profiles.active option.
```
```
$ java -jar my-service.jar --spring.profiles.active=dev
# This doesn't works
```
```
$ java -Dspring.profiles.active=dev -jar my-service.jar
# This works fine
```
```
$ java -jar my-service.jar -Dspring.profiles.active=dev
# This doesn't works
```


**NOTE:** If you're specifying `spring.profiles.active` in your `application.properties` file then make sure you provide `spring.config.location` or `spring.config.additional-location` option to java accordingly as mentioned above.

If you are using AWS Lambda with SprintBoot, then you must declare the following under environment variables:

key: JAVA_TOOL_OPTIONS & value: -Dspring.profiles.active=dev

you can also have multiple listings in the @Profile annotation

@Profile({"dev","default"})

If you set "default" as an additional value, you don't have to specify spring.profiles.active

The neat way to do this without changing your source code each time is to use the OS environment variable `SPRING_PROFILES_ACTIVE`:

```sh
export SPRING_PROFILES_ACTIVE=production
```

[how-to-set-active-spring-profiles][1]

[1]:

[To see links please register here]

Try this:
`@PropertySource("classpath:${spring.profiles.active:production}_file.properties")`

If you are using **application.yml** for your config then add this to it, to set the default active profile:

```
spring:
profiles:
active: production
```

If anyone out there trying to load profile-specific properties for spring web(not boot)
Then do this, can add multiple profiles to pom. Then in config class we can read the build profile and load props accordingly

> build like mvn clean install -Pdev

pom.xml

<profiles>
<profile>
<id>prod</id>
<properties>
<activatedProperties>prod</activatedProperties>
</properties>
<activation>
<!-- activate if system properties 'env=prod' -->
</activation>
<build><finalName>Finger</finalName></build>
</profile>
</profiles>

class

@Configuration
@PropertySource({"classpath:application.properties"})
public class MyApplicationConfiguration {
@Bean
public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {

PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();
Resource resource = new ClassPathResource("/application.properties");
try {
Properties props1 = PropertiesLoaderUtils.loadProperties(resource);
resource = new ClassPathResource("/application-"+props1.getProperty("spring.profiles.active")+".properties");
configurer.setProperties(props1);
configurer.setLocation(resource);
} catch (IOException e) {
e.printStackTrace();
}
return configurer;
}
}