我有spring网络应用程序(JPA/Hibernate+MySQL)。我有两个DAO类。CustomerDAO@Entity@Table(name="customers")publicclassCustomer{@Id@Column(name="customer_id")@GeneratedValue(strategy=GenerationType.AUTO)privateLongid;@Column(name="name",length=50)privateStringname;@Column(name="surname",length=50)privateStringsurnam