無法執行本機SQL查詢

我正在開發一個應用程序與春季和休眠。在DAO類中，我嘗試執行的是原生sql，如下所示：無法執行本機SQL查詢

SELECT * FROM product ORDER BY unitprice ASC LIMIT 6 OFFSET 0

但是系統會引發異常。

org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here 
org.springframework.orm.hibernate3.SpringSessionContext.currentSession(SpringSessionContext.java:63) 
org.hibernate.impl.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:544) 
com.dao.ProductDAO.listProducts(ProductDAO.java:15) 
com.dataobjects.impl.ProductDoImpl.listProducts(ProductDoImpl.java:26) 
com.action.ProductAction.showProducts(ProductAction.java:53) 
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

應用程序的context.xml是展示低於

<bean id="propertyConfigurer" 
     class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" 
     p:location="/WEB-INF/jdbc.properties" /> 

<bean id="dataSource" 
     class="org.springframework.jdbc.datasource.DriverManagerDataSource" 
     p:driverClassName="${jdbc.driverClassName}" 
     p:url="${jdbc.url}" 
     p:username="${jdbc.username}" 
     p:password="${jdbc.password}" /> 

<!-- Hibernate SessionFactory --> 
<!-- class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"--> 
<bean id="sessionFactory" 
     class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> 
     <property name="dataSource"> 
      <ref local="dataSource"/> 
     </property> 
    <property name="configLocation"> 
     <value>WEB-INF/classes/hibernate.cfg.xml</value> 
    </property> 
    <property name="configurationClass"> 
     <value>org.hibernate.cfg.AnnotationConfiguration</value> 
    </property> 
    <!-- <property name="annotatedClasses"> 
      <list> 
       <value>com.pojo.Product</value> 
       <value>com.pojo.User</value> 
       <value>com.pojo.UserLogin</value> 
      </list> 
    </property> --> 
    <property name="hibernateProperties"> 
     <props> 
     <prop key="hibernate.dialect">${hibernate.dialect}</prop> 
     <prop key="hibernate.show_sql">true</prop> 
     </props> 
    </property> 
</bean> 

<!-- User Bean definitions --> 

<bean name="/logincheck" class="com.action.LoginAction"> 
    <property name="userDo" ref="userDo" /> 
</bean> 
<bean id="userDo" class="com.dataobjects.impl.UserDoImpl" > 
<property name="userDAO" ref="userDAO" /> 
</bean> 
<bean id="userDAO" class="com.dao.UserDAO" > 
<property name="sessionFactory" ref="sessionFactory" /> 
</bean> 

<bean name="/listproducts" class="com.action.ProductAction"> 
    <property name="productDo" ref="productDo" /> 
</bean> 
<bean id="productDo" class="com.dataobjects.impl.ProductDoImpl" > 
<property name="productDAO" ref="productDAO" /> 
</bean> 
<bean id="productDAO" class="com.dao.ProductDAO" > 
<property name="sessionFactory" ref="sessionFactory" /> 
</bean>

和DAO類是

public class ProductDAO extends HibernateDaoSupport{ 

public List listProducts(int startIndex, int incrementor) { 
    org.hibernate.Session session = getHibernateTemplate().getSessionFactory().getCurrentSession(); 
    String queryString = "SELECT * FROM product ORDER BY unitprice ASC LIMIT 6 OFFSET 0"; 
    List list = null; 
    try{ 
     session.beginTransaction(); 
     org.hibernate.Query query = session.createQuery(queryString); 
     list = query.list(); 
     session.getTransaction().commit(); 

    } catch(Exception e) { 
     e.printStackTrace(); 
    } finally { 
     session.close(); 
    } 
    return list; 
} 

public List getProductCount() { 
    String queryString = "SELECT COUNT(*) FROM Product"; 
    return getHibernateTemplate().find(queryString); 
} 
}

任何想法解決它呢？

來源

2011-11-21 Renjith