h2 database spring boot
- Create a new Spring Boot project1. Setting up the H2 Database Dependency in pom.xml:
- Open the pom.xml file.
Add the H2 database dependency in the dependencies section.
Configuring the H2 Database in application.properties:
- Open the application.properties file.
Configure the H2 database settings including URL, username, and password.
Creating Entity Class and Repository Interface:
- Create a Java entity class with annotations like @Entity, @Id, and @GeneratedValue.
Create a repository interface that extends JpaRepository.
Writing Service and Controller Classes:
- Create a service class with business logic and annotate it with @Service.
Create a controller class with request mappings and annotate it with @RestController.
Testing the H2 Database:
- Run the Spring Boot application.
- Access the H2 console using the provided URL.
Verify the data by executing SQL queries.
Using H2 Database in Spring Boot Application:
- Use the H2 database in the Spring Boot application to perform CRUD operations.
Utilize the JpaRepository methods for database operations.
Production Considerations:
- When moving to production, configure a different database like PostgreSQL or MySQL.
- Update the application.properties file with the production database settings.