How to use Spring Data JPA to unify data access entry points

In this article, we will learn about the use of Spring Data JPA. Before starting to learn, let's first understand what JPA is.

The full name of JPA is Java Persistence API , which is a specification in J2EE that standardizes the data persistence API. Although HIbernate is used by fewer and fewer people, JPA, a unified standardized interface, is still of great significance in our development work. This blog will introduce a data access framework that follows the JPA specification and has a high usage rate - Spring Data JPA, which provides a simplified and standardized way to access and manipulate databases.

Configure Spring Data JPA

Before we start using Spring Data JPA, we need to do some configuration. First, we need to add the dependencies of Spring Data JPA. Open the project's pom.xml file and add the following dependencies in the < dependencies > tag:

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

Next, we need to configure the data source and JPA in the configuration file of the project. Open the application.properties file (or application.yml file) and add the following configuration:

spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase
spring.datasource.username=root
spring.datasource.password=password

spring.jpa.show-sql=true…