Configure JPA

Make sure the following dependencies are added in your dependency section of the project pom.xml file.

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

It will add managed JPA, Spring Data JPA and Hibernate into your project.

We have already configured DataSource, and JPA and Spring Data JPA via application.yml.

You can also use Java code configuration to add some extra features.

@Configuration
@EnableTransactionManagement(mode = AdviceMode.ASPECTJ)
@EntityScan(basePackageClasses = {User.class, Jsr310JpaConverters.class})
@EnableJpaAuditing(auditorAwareRef = "auditor")
public class JpaConfig {

    @Bean
    public AuditorAware<User> auditor() {
        return () -> SecurityUtil.currentUser();
    }

}

In the above codes we add @EnableTransactionManagement(mode = AdviceMode.ASPECTJ) to enable transaction management and use AspectJ to weave transaction aspect into your business logic.

And @EnableJpaAuditing(auditorAwareRef = "auditor") enables the simple auditing features provided in Spring Data JPA. It requires a AuditorAware bean.

@EntityScan(basePackageClasses = {User.class, Jsr310JpaConverters.class}) add the JPA entity scan scope, Java 8 DateTime support is added in Spring Data JPA via JPA 2.1 AttributeConvertor feature.