刚用Spring mvc 碰上Spring管理hibernate事务的奇怪问题
最近刚学Spring3 mvc的开发 碰上一个非常古怪的问题 求大家解答第一种情况
web上下文配置数据连接文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
">
<!-- Root Context: defines shared resources visible to all other web components -->
<!-- 引入配置文件 -->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:jdbc.properties</value>
</list>
</property>
</bean>
<!-- 数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/demo" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean>
<!--hibernate工厂 -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="mappingResources">
<list>
<value>routeserver.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.format_sql">true</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<!-- 声明式事务 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<aop:config >
<aop:advisor pointcut= "execution(* com.demo.services.*.*(..))" advice-ref="txAdvice"/>
</aop:config>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="*" propagation="REQUIRED"
isolation="READ_COMMITTED" read-only="false"
rollback-for="java.lang.Exception" />
</tx:attributes>
</tx:advice>
</beans>
DAO类
@Repository
public class RouteServerDao implements IRouteServerDao {
private SessionFactory sessionFactory;
@Autowired
public RouteServerDao(SessionFactory sessionFactory){
this.sessionFactory = sessionFactory;
}
private Session currentSession(){
return sessionFactory.getCurrentSession();
}
@Override
public void insertRouteServer(RouteServer server){
Session session = currentSession();
session.save(server);
}
}
这种情况下 在Controller里调用 insertRouteServer 方法后 数据并没有持久化到数据库中
改成下面这样才能提交事务到数据库
Session session = currentSession();
session.save(server);
session.flush()
后来我又把RouteServerDao配置到web上下文配置数据连接文件中
<bean id="RouteServerDAO" class="com.demo.services.RouteServerDao">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
DAO改为
@Repository
public class RouteServerDao implements IRouteServerDao {
private SessionFactory sessionFactory;
public RouteServerDao(){
}
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
private Session currentSession(){
return sessionFactory.getCurrentSession();
}
@Override
public void insertRouteServer(RouteServer server){
Session session = currentSession();
session.save(server);
}
这样当controller调用insertRouteServer时方法结束时数据就自动提交到数据库中
现在非常困惑的是 这两种写法有什么区别，为什么第一种写法方法没有受到Spring事务的托管呢
@Autowired的意思不就是吧相同类型的类注入到类中么
注：@Autowired 引入的是import org.springframework.beans.factory.annotation.Autowired
谢谢大家解答了 Spring Hibernate 管理 事务 Spring MVC
补充：Java , Web 开发
