【C015257】下面使用HibernateTemplate实现insert操作的代码中，能正确实现功能的是（）。

• A.public class ProductDaoImpl implements IProductDaoDao {  
  
      private HibernateTemplate hibernateTemplate;
  
   public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {  
  
    this.hibernateTemplate = hibernateTemplate;  
  
   }  
  
      @Override  
  
      public void insert(Customer entity) {  
  
          this.hibernateTemplate.save(entity);  
  
      }
  
  }
  
  <bean  id="hibernateTemplate" 
  
  class="org.springframework.orm.hibernate3.HibernateTemplate">  
  
   <property name="sessionFactory" ref="sessionFactory" />  
  
  </bean>
  
  <bean id="productDaoImpl" class="com.demo.dao.ProductDaoImpl">  
  
   <property name="hibernateTemplate" ref="hibernateTemplate" />  
  
  </bean>

• B.public class ProductDaoImpl extends HibernateDaoSupport 
  
  implements  IProductDaoDao { 
  
      @Override  
  
      public void insert(Customer entity) {  
  
          this.getHibernateTemplate().save(entity);  
  
      } 
  
  }
  
  <bean id="productDaoImpl" class="com.demo.dao.ProductDaoImpl">
  
   <property name="sessionFactory" ref="sessionFactory"/>
  
  </bean>

• C.public class ProductDaoImpl implements  IProductDaoDao {
  
      @Override  
  
      public void insert(Customer entity) {  
  
          this.getHibernateTemplate().save(entity);  
  
      } 
  
  }
  
  <bean id="productDaoImpl" class="com.demo.dao.ProductDaoImpl">
  
   <property name="sessionFactory" ref="sessionFactory"/>
  
  </bean>

• D.public class ProductDaoImpl implements IProductDaoDao {  
  
      private HibernateTemplate hibernateTemplate;
  
      @Override  
  
      public void insert(Customer entity) {  
  
          this.hibernateTemplate.save(entity);  
  
      } 
  
  }
  
  <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">  
  
   <property name="sessionFactory" ref="sessionFactory" />  
  
  </bean>
  
  <bean id="productDaoImpl" class="com.demo.dao.ProductDaoImpl">  
  
   <property name="hibernateTemplate" ref="hibernateTemplate" />  
  
  </bean>