Spring3 整合 Hibernate4实现数据库操作(1)

Hibernate知识学习:http://justsee.iteye.com/blog/1061576

注意Hibernate4在开发当中的一些改变  :http://snake-hand.iteye.com/blog/1995592

    //首先在web.xml中加入OpenSessionInViewFilter过滤器

   <filter> <filter-name>openSessionInViewFilter</filter-name> <filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class> </filter> <filter-mapping> <filter-name>openSessionInViewFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
在applicationContext.xml中的sessionFactory 中 添加<property name="hibernate.current_session_context_class">thread</property> 属性
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
  		<!-- 依赖注入数据源,正式上下文定义的dataSource -->
	    <property name="dataSource" ref="dataSource" />
  
	    <property name="hibernateProperties">
	    	<value>
	            hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
	            hibernate.hbm2ddl.auto=update
	            hibernate.show_sql=true
	            hibernate.format_sql=false
	            hibernate.cache.use_second_level_cache=true
	            hibernate.cache.use_query_cache=false
	            hibernate.cache.provider_class=org.hibernate.cache.EhCacheProvider
	            hibernate.current_session_context_class=thread
	        </value>
	   </property>
	   
	    <!--通过配置文件的方式获取数据源-->
	    <property name="mappingResources">
	    	<list>
	    	   <!-- 以下用来列出所有的PO映射文件 -->
		       <value>hibernate.cfg.xml</value>
		       <value>test.cfg.xml</value>
	    	</list>
	    </property>	   
	   
  </bean>
在dao层部分的代码如下,通过sessionFactory可以获得当前的事务的session,通过session实现对数据库的操作

public class MessageDaoImpl implements MessageDao{ private SessionFactory sessionFactory; public Session getSession() { return sessionFactory.getCurrentSession(); } public SessionFactory getSessionFactory() { return sessionFactory; } public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } @Override public void saveMessage(TestMessage tm) { Session session = this.getSession(); Transaction tran = session.beginTransaction(); session.save(tm); tran.commit(); } @Override public String getMessage() { Session session = this.getSession(); Transaction tran = session.beginTransaction(); List<TestMessage> datas = session.createQuery("From TestMessage").list(); tran.commit(); return datas.get(7).getContent(); } }

  

posted @ 2015-03-25 14:15  hjzqyx  阅读(347)  评论(0编辑  收藏  举报