pom 文件配置

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.0.5</version>
        <relativePath/>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

application.yaml 配置

spring:
  datasource:
    # 内存模式  jdbc:h2:mem:test
    url: jdbc:h2:mem:test
    driver-class-name: org.h2.Driver
  # 控制台访问 http://localhost:8080/h2-console
  # jdbc 要与上面的url保持一致
  h2:
    console:
      enabled: true

此时项目启动就可以访问 H2数据库了 http://localhost:8080/h2-console

其中dict_dto 为jpa 自动创建的表

entity

@Data
@Builder
@Entity
public class DictDto {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;

    private String dict_key;

    private String dict_value;

}

dao

import org.springframework.data.jpa.repository.JpaRepository;

public interface DictDao extends JpaRepository<DictDto,String> {
}