How to Enable and Access the H2 Database Console in Spring Boot

How can I view the content of the embedded H2 database and enable the H2 console in a Spring Boot application while ensuring the console is only available for certain conditions?

# Add the following to your application.properties to enable the H2 console:
# spring.h2.console.enabled=true
# spring.h2.console.path=/console
# spring.datasource.url=jdbc:h2:mem:testdb
# Note: Adjust the url, username and password as necessary.

To enable and access the H2 database console in a Spring Boot application, follow these steps for proper configuration. This allows you to view your embedded H2 database and ensure that the console is available conditionally, depending on your setup.

# Example of a Spring Boot application.properties configuration:
# Configuration for enabling the H2 console
spring.h2.console.enabled=true 
spring.h2.console.path=/h2-console 
spring.datasource.url=jdbc:h2:mem:testdb 
spring.datasource.username=sa 
spring.datasource.password=

Causes

• The H2 console is not enabled by default in Spring Boot applications.
• Configuration properties for the embedded database must be set correctly to access the console.

Solutions

• Ensure appropriate settings in your application.properties file to enable the H2 console: ```properties spring.h2.console.enabled=true spring.h2.console.path=/console spring.datasource.url=jdbc:h2:mem:testdb spring.datasource.username=sa spring.datasource.password= ``` - Start your application using `mvn spring-boot:run`, and access the console at: `http://localhost:8080/console/`.
• Use conditional configuration with Spring Profiles to enable the H2 console only in specific environments. Example: ```yaml # application.yml --- # Default profile spring: profiles: default h2: console: enabled: true --- # Production profile spring: profiles: production h2: console: enabled: false ```

Mistake: Not enabling the H2 console in application.properties.

Solution: Add 'spring.h2.console.enabled=true' to your application.properties.

Mistake: Using the wrong URL to access H2 console.

Solution: Ensure you access the console at 'http://localhost:8080/console/' or the path specified in your properties.

Mistake: Not using profiles to manage the database configuration.

Solution: Utilize Spring Profiles to conditionally enable the console only under certain conditions.