Spring - Hibernate Implementation of JPA (Java Persistence API)
1. Add Dependencies
First, add the Hibernate dependencies to your project. If you are using Maven or Gradle as a build tool, you can add the respective dependencies in your pom.xml
or build.gradle
file. Here is a Maven example:
1 | <dependencies> |
2. Configure the Database
Configure the database connection properties in application.properties
or application.yml
. For example, if using a MySQL database, the configuration might look like this:
1 | spring.datasource.url=jdbc:mysql://localhost:3306/your_database |
3. Define the Entity Class
Create an entity class and annotate it with JPA annotations. For example, a simple User
entity class might look like this:
1 | package com.example; |
4. Data Access Interface (Repository)
This interface uses Spring Data JPA’s JpaRepository
interface, providing basic CRUD operations and pagination functionality.
1 | package com.example.demo.repository; |
5. Service Layer
The service layer encapsulates business logic and interacts with the repository layer. Here, we create a basic service class that provides basic operations on student data.
1 | package com.example.demo.service; |
6. Controller Layer
The controller layer handles external requests and calls service layer methods. Below is a basic REST controller implementation.
1 | package com.example.demo.controller; |
By following these steps, you can implement JPA with Spring and Hibernate, providing a structured way to manage your database interactions.