Spring整合Hibernate的步骤

妖狐艹你老母 2022-07-18 05:55 114阅读 0赞

为什么要整合Hibernate？  
1、使用Spring的IOC功能管理SessionFactory对象  
 LocalSessionFactoryBean  
2、使用Spring管理Session对象   
 HibernateTemplate  
3、使用Spring的功能实现声明式的事务管理

整合Hibernate的步骤：  
1、配置SessionFactory（可以自动完成）  
 <bean id="sessionFactory"  class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">  
  <property name="configLocation"  
   value="classpath:hibernate.cfg.xml">  
  </property>  
 </bean>

2、配置HibernateTemplate，用于完成数据操作  
 <bean id="hibernateTemplete" class="org.springframework.orm.hibernate3.HibernateTemplate">  
  <property name="sessionFactory" ref="sessionFactory"></property>  
 </bean>

3、让Common继承HibernateDaoSupport类，该类提供了HibernateTemplate的getter和setter方法。

4、将hibernateTemplete注入到Common中  
 <bean id="common" class="com.aptech.common.Common">  
  <property name="hibernateTemplate" ref="hibernateTemplete"></property>  
 </bean>

5、将Common的方法修改成hibernateTemplete的操作。  
package com.aptech.common;

import [Java][].sql.SQLException;  
import java.util.List;

import org.hibernate.HibernateException;  
import org.hibernate.Session;  
import org.springframework.dao.DataAccessException;  
import org.springframework.orm.hibernate3.HibernateCallback;  
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.aptech.exception.CommonException;  
import com.aptech.htm.HibernateSessionFactory;  
/\*\*  
 \* 通用类,不再负责事务处理  
 \* 目标对象  
 \* @author   
 \*  
 \* @param <POJO>  
 \*/  
public class Common<POJO> extends HibernateDaoSupport implements ICommon<POJO> \{  
 public void insertObject(POJO pojo) throws CommonException \{  
  try \{  
   this.getHibernateTemplate().save(pojo);  
  \} catch (DataAccessException e) \{  
   e.printStackTrace();  
   throw new CommonException(e);  
  \}  
 \}

public void updateObject(POJO pojo) throws CommonException \{  
  try \{  
   this.getHibernateTemplate().update(pojo);  
  \} catch (DataAccessException e) \{  
   e.printStackTrace();  
   throw new CommonException(e);  
  \}  
 \}

public void deleteObject(Class theClass, long id) throws CommonException \{  
  try \{  
   Object obj = this.getHibernateTemplate().load(theClass, id);  
   this.getHibernateTemplate().delete(obj);  
  \} catch (DataAccessException e) \{  
   // TODO Auto-generated catch block  
   e.printStackTrace();  
   throw new CommonException(e);  
  \}  
 \}

public POJO loadObject(Class theClass, long id) throws CommonException \{  
  try \{  
   Object obj = this.getHibernateTemplate().load(theClass, id);  
   return (POJO) obj;  
  \} catch (DataAccessException e) \{  
   // TODO Auto-generated catch block  
   e.printStackTrace();  
   throw new CommonException(e);  
  \}  
 \}

public List queryObjects(final String hql) throws CommonException \{  
  class Hc implements HibernateCallback\{  
   public Object doInHibernate(Session session)  
     throws HibernateException, SQLException \{  
    return session.createQuery(hql).list();  
   \}  
  \}  
    
  try \{  
   return this.getHibernateTemplate().executeFind(new Hc());  
  \} catch (DataAccessException e) \{  
   e.printStackTrace();  
   throw new CommonException(e);  
  \}  
 \}

public List queryObjects(Class theClazz) throws CommonException \{  
  return this.queryObjects("from " + theClazz.getSimpleName());  
 \}  
\}

6、配置事务  
  
 <bean id="htm" class="org.springframework.orm.hibernate3.HibernateTransactionManager">  
  <property name="sessionFactory">  
   <ref bean="sessionFactory"/>  
  </property>  
 </bean>  
 <bean id="ti" class="org.springframework.transaction.interceptor.TransactionInterceptor">  
  <property name="transactionManager">  
   <ref bean="htm"/>  
  </property>  
  <property name="transactionAttributes">  
   <props>  
      
    <prop key="insert\*">PROPAGATION\_REQUIRED</prop>  
    <prop key="update\*">PROPAGATION\_REQUIRED</prop>  
    <prop key="delete\*">PROPAGATION\_REQUIRED</prop>  
    <prop key="load\*">PROPAGATION\_REQUIRED,readOnly</prop>  
    <prop key="query\*">PROPAGATION\_REQUIRED,readOnly</prop>  
   </props>  
  </property>  
 </bean>  
   
   
 <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">  
  <property name="beanNames">  
   <list>  
    <value>common</value>  
   </list>  
  </property>  
  <property name="interceptorNames">  
   <list>  
    <value>ti</value>  
   </list>  
  </property>  
 </bean>

7、将common注入Dao  
 <bean id="baseDao" abstract="true">  
  <property name="common">  
   <ref bean="common"/>  
  </property>  
 </bean>  
   
 <bean id="udao" class="com.aptech.dao.impl.UserDao" parent="baseDao"></bean>  
 <bean id="rdao" class="com.aptech.dao.impl.RoleDao" parent="baseDao"></bean>

8、将Dao注入Service  
 <bean id="grantService" class="com.aptech.service.impl.GrantService">  
  <property name="rdao" ref="rdao"></property>  
  <property name="udao" ref="udao"></property>  
 </bean>

[Java]: http://lib.csdn.net/base/17