Spring Data JDBC Extensions

Last Updated : 28 Mar, 2026

Spring Data JDBC Extensions provide additional features on top of Spring Data JDBC to simplify working with relational databases. It enhances core JDBC capabilities by offering utilities like advanced mapping, auditing, and support for database-specific operations while keeping the lightweight nature of JDBC intact.

  • Adds extra functionality beyond basic Spring Data JDBC (e.g., auditing, custom conversions).
  • Simplifies handling of complex database operations and mappings.
  • Maintains a lightweight, non-ORM approach compared to JPA/Hibernate.
  • Useful for applications needing more control over SQL while still leveraging Spring abstractions.

Types of Spring Data JDBC Extensions

1. Pagination

  • Used to fetch data in chunks (pages) instead of full dataset.
  • Improves performance and user experience for large data.

2. Sorting

  • Allows ordering of results based on one or more fields.
  • Supports ascending and descending order.

3. Transactions

  • Ensures multiple database operations execute as a single unit.
  • Maintains data integrity and consistency.

4. Converters

  • Converts database types to Java types and vice versa.
  • Useful for handling custom or unsupported data types.

Steps to Implement Spring Data JDBC Extensions

Step 1: Create Spring Boot Project

1. Use Spring Initializer
2. Add dependencies:

  • Spring Data JDBC
  • Spring Web (optional)
  • Database Driver (MySQL/PostgreSQL)

3. Generate the project

Step 2: Add Dependencies

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>

Step 3: Configure Database Connection

spring.datasource.url=jdbc:mysql://localhost:3306/blog_db

spring.datasource.username=root

spring.datasource.password=admin

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

Step 4: Create Entity Class

Maps Java class to database table.

Java 
@Table("blog_posts")
public class BlogPost {

    @Id
    private Long id;
    private String title;
    private String content;
}

Step 5: Create Repository Interface

Enables CRUD + Pagination + Sorting.

Java 
public interface BlogPostRepository extends PagingAndSortingRepository<BlogPost, Long> {
}

Step 6: Use Pagination

Fetches data in pages.

Java 
PageRequest pageRequest = PageRequest.of(0, 10);
repository.findAll(pageRequest);

Step 7: Use Sorting

Retrieves sorted data.

Java 
Sort sort = Sort.by(Sort.Direction.DESC, "title");
repository.findAll(sort);

Step 8: Use Transactions

Ensures safe database operations.

Java 
@Transactional
public void savePost(BlogPost post) {
    repository.save(post);
}

Step 9: Run Application

Run using

mvn spring-boot:run

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