Over a million developers have joined DZone.

Simpler JPA with Spring Data-JPA

DZone's Guide to

Simpler JPA with Spring Data-JPA

· Java Zone
Free Resource

The single app analytics solutions to take your web and mobile apps to the next level.  Try today!  Brought to you in partnership with CA Technologies

How to configure your Spring application with Simple CRUD configuration with Spring Data-JPA.

1. Add Spring Data-JPA to project configuration. In your Maven pom.xml file


2. Configure JPA Entity

public class Product {
  @GeneratedValue(strategy = GenerationType.AUTO)
  @Column(name = "id")
  private Long id;
  @Column(unique = true)
  private String productId;
  private Integer quantity;

3. Configure Typed Repository Interface

Spring Data JPA will create the beans for us.

package com.gordondickens.myapp.repository;
import org.springframework.data.repository.CrudRepository;
import com.gordondickens.myapp.entity.Product;
public interface ProductRepository
   extends CrudRepository<Product, Long> {}

4. Configure the application context

Note: this example uses Hibernate and HSQL

<!-- Directory to scan for repository classes -->
   base-package="com.gordondickens.myapp.repository" />
<bean class="org.springframework.orm.jpa.JpaTransactionManager"
  <property name="entityManagerFactory"
      ref="entityManagerFactory" />
  <property name="jpaDialect">
    <bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
<bean id="entityManagerFactory"
  <property name="dataSource" ref="dataSource" />
  <property name="jpaVendorAdapter">
    <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
      <property name="generateDdl" value="true" />
      <property name="database" value="HSQL" />

5. Inject the Repository

In our service class & tests we use the repository to execute our crud methods. Repository Methods: count(), exists(), delete(), deleteAll(), findOne(), findAll(), save().

public class ProductServiceImpl extends ProductService {
   ProductRepository productRepository;


The Spring Data project abstracts away basic data management concepts. In addition to support for traditional relational methodologies, Spring Data provides support for NoSQL Graph, Key-Value and Map-Reduce types. As we saw in the above example configuring CRUD style applications is fairly trivial and Spring provides a convenient configuration for the typical cookie cutter code.

Click here to see my other blog which lists the annotations in “Spring Data-Commons” and “Spring Data-JPA”.


From http://gordondickens.com/wordpress/2011/08/01/simpler-jpa-with-spring-data-jpa/

CA App Experience Analytics, a whole new level of visibility. Learn more. Brought to you in partnership with CA Technologies.


Opinions expressed by DZone contributors are their own.


Dev Resources & Solutions Straight to Your Inbox

Thanks for subscribing!

Awesome! Check your inbox to verify your email so you can start receiving the latest in tech news and resources.


{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}