Profile-based configuration in Spring Boot - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the active Spring profile in application.properties.

Spring Boot

spring.profiles.active=[1]

Drag options to blanks, or click blank then click option'

Adefault

Bactive

Cprofile

Ddev

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'active' or 'profile' as the profile name instead of a real profile like 'dev'.

Leaving the value empty.

The property spring.profiles.active sets the active profile. Here, dev is a common profile name.

2fill in blank

medium

Complete the filename to create a profile-specific properties file for the test profile.

Spring Boot

application-[1].properties

Drag options to blanks, or click blank then click option'

Aactive

Bdefault

Ctest

Dprofile

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'default' or 'active' instead of the actual profile name.

Misspelling the profile name.

Spring Boot loads application-{profile}.properties files based on the active profile. For the test profile, the file is application-test.properties.

3fill in blank

hard

Fix the error in the annotation to activate the prod profile in a Spring Boot test class.

Spring Boot

@ActiveProfiles("[1]")

Drag options to blanks, or click blank then click option'

Aprod

Bdefault

Cproduction

Dprofile

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'production' instead of 'prod'.

Using 'default' which is not a profile name.

The @ActiveProfiles annotation activates the specified profile for tests. The profile name must exactly match the profile defined in your configuration, here prod.

4fill in blank

hard

Fill both blanks to define a bean that is only created when the dev profile is active.

Spring Boot

@Bean
@Profile([1])
public DataSource dataSource() {
    return [2];
}

Drag options to blanks, or click blank then click option'

Adev

Bprod

C"dev"

Dnew HikariDataSource()

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting the profile name in @Profile.

Returning a class name instead of an instance.

The @Profile annotation requires the profile name as a string, so it must be quoted. The bean method returns a new instance of the data source implementation.

5fill in blank

hard

Fill all three blanks to create a YAML profile-specific configuration for staging with a custom server port.

Spring Boot

spring:
  profiles:
    active: [1]
  server:
    port: [2]

logging:
  level:
    root: [3]

Drag options to blanks, or click blank then click option'

Astaging

B8085

CDEBUG

Dprod

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'prod' instead of 'staging' for the profile.

Setting port as a string instead of a number.

Using lowercase logging levels.

This YAML snippet activates the staging profile, sets the server port to 8085, and sets the root logging level to DEBUG.