spring事务问题求解

[faith.huan]

代码如下 DataDao：
public class DataDao {

public void getMkmDetail(){
persistentDetail();
}

@Transactional
public void persistentDetail(){
//获取current session
System.out.println(hibernateUtil.getSession("current"));
}
}

调用方法及结果：
调用方法一：
public class DataLoader {
public static void main(String[] args) throws InterruptedException {
ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
DataDao dd = (DataDao) ctx.getBean("dataDao");
dd.persistentDetail();
}

结果：可以打印session对象
SessionImpl(PersistenceContext[entityKeys=[],collectionKeys=[]];ActionQueue[insertions=org.hibernate.engine.spi.ExecutableList@1fbb60ad updates=org.hibernate.engine.spi.ExecutableList@46c80e21 deletions=org.hibernate.engine.spi.ExecutableList@7817bcd4 orphanRemovals=org.hibernate.engine.spi.ExecutableList@5e6e3fe4 collectionCreations=org.hibernate.engine.spi.ExecutableList@1824c22b collectionRemovals=org.hibernate.engine.spi.ExecutableList@1547a16f collectionUpdates=org.hibernate.engine.spi.ExecutableList@11b78953 collectionQueuedOps=org.hibernate.engine.spi.ExecutableList@2898b13b unresolvedInsertDependencies=UnresolvedEntityInsertActions[]])

调用方法一：
public class DataLoader {
public static void main(String[] args) throws InterruptedException {
ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
DataDao dd = (DataDao) ctx.getBean("dataDao");
dd.getMkmDetail();
}

结果：Exception in thread "main" org.hibernate.HibernateException: No Session found for current thread


求解 为什么直接调用可以，用方法间接调用就不行了

[zycgod]

你getMkmDetail方法是不带事物的，调用带事物的persistentDetail方法时，由于采用了默认的事物传播机制，spring内部认为getMkmDetail已经开启了事物（包含了session的创建），所以在persistentDetail调用获得当前session的时候，会出现上述异常。在getMkmDetail方法上加上@Transactional注解应该就可以了。

[sinat_19250161]

在getMkmDetail方法上加上@Transactional注解试试

[JavaPrimary]

楼主应该去查查@Transactional的作用。认识一下事物的开启和回滚