public int save(User user) {
user.setCreateDate(new Date());
Session session=this.getSession();
Transaction tran=session.beginTransaction();
int count=(Integer)session.save(user);
tran.commit();
}
这段保存代码是可以执行的。
但是加入监听器之后session.save就会抛出空指针。
监听器代码如下:
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">none</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.OracleDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">false</prop>
</props>
</property>
<property name="mappingDirectoryLocations">
<list>
<value>classpath:com/haier/hibernate/hbm</value>
</list>
</property>
<!-- 监听器 -->
<property name="eventListeners">
<map>
<entry key="save">
<ref bean="saveOrUpdate" />
</entry>
</map>
</property>
</bean>
<bean id="saveOrUpdate" class="com.haier.hibernate.listener.SaveOrUpdateListener" />
package com.haier.hibernate.listener;
import org.hibernate.HibernateException;
import org.hibernate.event.SaveOrUpdateEvent;
import org.hibernate.event.SaveOrUpdateEventListener;
public class SaveOrUpdateListener implements SaveOrUpdateEventListener {
private static final long serialVersionUID = 6050785018061727792L;
public void onSaveOrUpdate(SaveOrUpdateEvent arg0) throws HibernateException {
System.out.println("saveOrUpdate");
}
}
saveOrUpdate
2016-09-21 17:31:45,442 DEBUG org.springframework.jdbc.datasource.DataSourceTransactionManager.processRollback:847 - Initiating transaction rollback
2016-09-21 17:31:45,442 DEBUG org.springframework.jdbc.datasource.DataSourceTransactionManager.doRollback:284 - Rolling back JDBC transaction on Connection [oracle.jdbc.driver.T4CConnection@cc49d2]
2016-09-21 17:31:45,442 DEBUG org.springframework.jdbc.datasource.DataSourceTransactionManager.doCleanupAfterCompletion:327 - Releasing JDBC Connection [oracle.jdbc.driver.T4CConnection@cc49d2] after transaction
2016-09-21 17:31:45,442 DEBUG org.springframework.jdbc.datasource.DataSourceUtils.doReleaseConnection:327 - Returning JDBC Connection to DataSource
2016-09-21 17:31:45,442 ERROR org.apache.struts2.dispatcher.Dispatcher.error:38 - Exception occurred during processing request: null
java.lang.NullPointerException
at com.haier.hibernate.user.dao.impl.UserDaoImpl.save(UserDaoImpl.java:53)
at com.haier.hibernate.user.service.impl.UserServiceImpl.save(UserServiceImpl.java:25)
还请各位大哥、大神赐教!