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Building Scalable Applications with Thymeleaf and Spring Boot

Getting Started with Spring Data JPA

Explore how to integrate databases using Spring Data JPA, Hibernate, and PostgreSQL. Learn to add necessary dependencies, implement early primary key generation with JPearl, and create entities like User to manage data effectively.

We'll cover the following...

Adding Spring Data JPA

To add Spring Data JPA to the project, we need to add the following dependencies to the Maven pom.xml:

XML
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
    <groupId>io.github.wimdeblauwe</groupId>
    <artifactId>jpearl-core</artifactId>
    <version>${jpearl.version}</version>
</dependency>

  • spring-boot-starter-data-jpa includes the JPA specification and Hibernate.

  • spring-boot-starter-validation includes Hibernate Validator which allows to express and validate application constraints.

  • jpearl is a library with some utility classes and is good to be used with Spring Data JPA.

We will also add this to the project > build > pluginManagement > plugins section of the pom.xml:

XML
<plugin>
    <groupId>io.github.wimdeblauwe</groupId>
    <artifactId>jpearl-maven-plugin</artifactId>
    <version>${jpearl.version}</version>
    <configuration>
        <basePackage>com.tamingthymeleaf.application</basePackage>
    </configuration>
</plugin>

The JPA Early Primary Key ...