在Spring Boot中整合JPA，首先需要添加Spring Data JPA和数据库驱动的依赖。以下是一个基本的Maven依赖配置示例：
<dependencies>
<!-- Spring Boot Starter Data JPA -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- 数据库驱动，以H2数据库为例 -->
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<!-- Spring Boot Starter Test -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
接下来，在application.properties或application.yml中配置数据库连接信息和JPA属性：
# application.properties
spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true
创建一个实体类（Entity）：
import javax.persistence.*;
@Entity
public class MyEntity {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String name;
// 省略getter和setter方法
}
创建一个继承自JpaRepository的接口：
import org.springframework.data.jpa.repository.JpaRepository;
public interface MyEntityRepository extends JpaRepository<MyEntity, Long> {
}
在@SpringBootApplication标注的类中使用@EnableJpaRepositories来扫描Repository：
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
@SpringBootApplication
@EnableJpaRepositories
public class MyApp {
public static void main(String[] args) {
SpringApplication.run(MyApp.class, args);
}
}
``