Spring整合Hibernate的步骤
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 李赞红
*
* @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
<!--
事务管理器,相当于TransactionProxy,定义事务的开启、提交、回滚 -->
<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>
<!--
key:方法名称 -->
<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>
<!--
自动代理,代理业务对象 -->
<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>
郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。