spring4和hibernate4整合的步骤

基本的整合步骤如下:

由于在spring中可以直接实现自动装配bean对象，所以可以直接将hibernate中的配置属性移植过来:

1. 装配dataSource对象

    <!-- 配置数据源 -->    
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://localhost:3306/test"></property>
        <property name="username" value="test"></property>
        <property name="password" value="test"></property>
    </bean>

2. 添加事务管理

2.1 添加事务管理

    <!-- 声明事务管理 -->
    <!-- 配置事务管理器 -->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 配置事务通知 -->
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="insert*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED" />
            <tx:method name="select*" read-only="true"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="query*" read-only="true"/>
        </tx:attributes>
    </tx:advice>

2.2 添加AOP：在service层切面添加事务

    <!-- 配置aop -->
    <aop:config>
        <aop:pointcut expression="execution(* com.bjsxt.service.impl.*.*(..))" id="pointcut"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>
    </aop:config>

3. 装配sessionFactory对象

    <!-- 定义hibernate的  sessionFactory -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="mappingLocations">
            <list>
            <value>com/bjsxt/pojo/*.hbm.xml</value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>
            </props>
        </property>
    </bean>

4. 该步骤的实现方式有3种:

    4.1 直接在dao中注入sessionFactory

    <bean id="userDao" class="com.bjsxt.dao.impl.UserDaoImpl">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    
    <bean id="userService" class="com.bjsxt.service.impl.UserServiceImpl">
        <property name="userDao" ref="userDao"></property>
    </bean>

    4.2 先装配HibernateTemplate对象，并注入sessionFactory。然后在dao中注入hibernateTemplate。

    <!-- 使用hibernateTemplate -->
    <bean id="hibernateTemplate" class="org.springframework.orm.hibernate4.HibernateTemplate">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    
    <!-- 在DAO中注入hibernateTemplate -->
    <bean id="userDao" class="com.bjsxt.dao.impl.UserDaoImpl">
        <property name="hibernateTemplate" ref="hibernateTemplate"></property>
    </bean>
    <bean id="userService" class="com.bjsxt.service.impl.UserServiceImpl">
        <property name="userDao" ref="userDao"></property>
    </bean>

    4.3 先装配HibernateDaoSupport对象，并注入sessionFactory。然后在dao对象中继承hibernateDaoSupport。

    <!-- 使用hibernateDaoSupport -->
    <bean id="hibernateDaoSupport" class="org.springframework.orm.hibernate4.support.HibernateDaoSupport" abstract="true">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    
    <!-- 在DAO中继承hibernateDaoSupport -->
    <bean id="userDao" class="com.bjsxt.dao.impl.UserDaoImpl" parent="hibernateDaoSupport">
    </bean>
    <bean id="userService" class="com.bjsxt.service.impl.UserServiceImpl">
        <property name="userDao" ref="userDao"></property>
    </bean>