搭建简单的Spring-Data JPA项目

<dependencies>
        <!-- junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

        <!-- hibernate对jpa的支持包 -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.6.3.Final</version>
        </dependency>

        <!-- c3p0 -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-c3p0</artifactId>
            <version>5.6.1.Final</version>
        </dependency>

        <!-- log日志 -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        
        <!-- Mysql and MariaDB -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>
    </dependencies>

@Entity
@Table(name="cst_customer")
public class Customer {

    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY) 
    @Column(name="cust_id")
    private Long custId;

    @Column(name="cust_name")
    private String custName;

    @Column(name="cust_phone")
    private String custPhone;
    
    getter/setter...

数据库配置：******

jpa:
    hibernate:
      ddl-auto: update
    show-sql: true

public interface CustomerDao extends JpaRepository<Customer, Long>, JpaSpecificationExecutor<Customer> {
}

public class DataTest {
    @Autowired
    private CustomerDao customerDao;

    /**
     * 保存一个客户数据
     * 调用save(obj)方法
     */
    @Test
    public void testSave() {
        Customer c = new Customer();
        c.setCustName("掘金");
        customerDao.save(c);
    }