# 3.2.1 添加 Spring Data JPA 到数据库中

Spring Data JPA 可用于具有 JPA starter 的 Spring Boot 应用程序。这个 starter 依赖不仅带来了 Spring Data JPA，还包括 Hibernate 作为 JPA 的实现：

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

如果想使用不同的 JPA 实现，那么至少需要排除 Hibernate 依赖，并包含所选择的 JPA 库。例如，要使用 EclipseLink 而不是 Hibernate，需要按如下方式更改构建：

```markup
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
    <exclusions>
        <exclusion>
            <artifactId>hibernate-entitymanager</artifactId>
            <groupId>org.hibernate</groupId>
        </exclusion>
    </exclusions>
</dependency>
​
<dependency>
    <groupId>org.eclipse.persistence</groupId>
    <artifactId>eclipselink</artifactId>
    <version>2.5.2</version>
</dependency>
```

请注意，根据对 JPA 实现的选择，可能需要进行其他更改。详细信息请参阅选择的 JPA 实现的文档。现在，让我们重新查看域对象并对它们进行注解以实现 JPA 持久化。


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