Hibernate 保存不出错，但数据库没有数据是什么原因,该如何解决

Hibernate 保存不出错，但数据库没有数据是什么原因
Dept d =new Dept();
d.setDeptId("999999");
d.setDeptCode ("999999");
d.setDeptName ("999999");
d.setHospitalId("1");
DeptDAO a =new DeptDAO();

Transaction tx = a.getSession().beginTransaction();
try {
a.save(d);
} catch (Exception e) {
tx.rollback(); 
} 
tx.commit();

2012-02-05 15:43:40,390 INFO [org.hibernate.impl.SessionFactoryObjectFactory] - Not binding factory to JNDI, no JNDI name configured
2012-02-05 15:43:40,390 DEBUG [org.hibernate.impl.SessionFactoryImpl] - instantiated session factory
2012-02-05 15:43:40,390 DEBUG [org.hibernate.impl.SessionFactoryImpl] - Checking 0 named HQL queries
2012-02-05 15:43:40,390 DEBUG [org.hibernate.impl.SessionFactoryImpl] - Checking 0 named SQL queries
2012-02-05 15:43:40,390 DEBUG [org.hibernate.impl.SessionImpl] - opened session at timestamp: 13284278203
2012-02-05 15:43:40,390 DEBUG [org.hibernate.event.def.DefaultSaveOrUpdateEventListener] - saving transient instance
2012-02-05 15:43:40,390 DEBUG [org.hibernate.event.def.AbstractSaveEventListener] - generated identifier: 999999, using strategy: org.hibernate.id.Assigned
2012-02-05 15:43:40,406 DEBUG [org.hibernate.event.def.AbstractSaveEventListener] - saving [Map.Dept#999999]
2012-02-05 15:43:40,421 DEBUG [Map.DeptDAO] - save successful
2012-02-05 15:43:40,421 DEBUG [org.hibernate.transaction.JDBCTransaction] - commit
2012-02-05 15:43:40,421 DEBUG [org.hibernate.impl.SessionImpl] - automatically flushing session
2012-02-05 15:43:40,421 DEBUG [org.hibernate.jdbc.JDBCContext] - before transaction completion
2012-02-05 15:43:40,421 DEBUG [org.hibernate.impl.SessionImpl] - before transaction completion
2012-02-05 15:43:40,421 DEBUG [org.hibernate.transaction.JDBCTransaction] - committed JDBC Connection
2012-02-05 15:43:40,421 DEBUG [org.hibernate.jdbc.JDBCContext] - after transaction completion
2012-02-05 15:43:40,421 DEBUG [org.hibernate.jdbc.ConnectionManager] - aggressively releasing JDBC connection
2012-02-05 15:43:40,421 DEBUG [org.hibernate.jdbc.ConnectionManager] - releasing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)]
2012-02-05 15:43:40,421 DEBUG [org.hibernate.connection.DriverManagerConnectionProvider] - returning connection to pool, pool size: 1
2012-02-05 15:43:40,421 DEBUG [org.hibernate.impl.SessionImpl] - after transaction completion

------解决方案--------------------
你写的是神马乱七八糟的代码啊？？？？？
好好看看Hibernate自带的demo里面是怎么写的
org.hibernate.auction.Main这个类：

Java code

    /**     * Demonstrates detached object support     */    public void changeUserDetails(User user) throws Exception {        System.out.println("Changing user details for: " + user.getId() );        Session s = factory.openSession();        Transaction tx=null;        try {            tx = s.beginTransaction();            s.merge(user);            tx.commit();        }        catch (Exception e) {            if (tx!=null) tx.rollback();            throw e;        }        finally {            s.close();        }    }
------解决方案--------------------
把DeptDAO 贴一下看看
------解决方案--------------------
检查事务有没提交。


hibernate有一个自动提交事务的配置

<property name="hibernate.connection.autocommit">true</property>
------解决方案--------------------
你们没发现他些的代码顺序都有问题？？？事务都没提交进行回滚呢？还有Hibernate的所有操作都离不开session，他的session呢？只是在开启事务那里用到了，最后还没有关闭session 。。。。
------解决方案--------------------
Not binding factory to JNDI, no JNDI name configured