想把毕设做的好看些，开始搭建框架，但是遇到点问题

WARNING: Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name ""transactionManager"" defined in file [C:\Program Files\Apache Software Foundation\tomcat-7.0.56\wtpwebapps\lfdcwtjxt\WEB-INF\classes\configs\applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.service.UnknownUnwrapTypeException: Cannot unwrap to requested type [javax.sql.DataSource]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1568)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:540)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4994)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5492)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1575)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1565)
	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.hibernate.service.UnknownUnwrapTypeException: Cannot unwrap to requested type [javax.sql.DataSource]
	at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.unwrap(DriverManagerConnectionProviderImpl.java:268)
	at org.springframework.orm.hibernate4.SessionFactoryUtils.getDataSource(SessionFactoryUtils.java:106)
	at org.springframework.orm.hibernate4.HibernateTransactionManager.afterPropertiesSet(HibernateTransactionManager.java:338)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1627)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1564)
	... 22 more

这个上面显示应该是在spring配置文件中的事务管理器那块出的问题，求解决
Spring的配置文件：

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    	<property name="configLocation">
    		<value>classpath:configs/hibernate.cfg.xml</value>
    	</property>
    
    </bean>
    <!-- 定义事物管理器，并位事物管理器配置上述所定义的session-->
    <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    	<property name="sessionFactory">
    		<ref bean="sessionFactory"/>
    	</property>
    </bean>
    <!-- 对事物管理器进行设置
    	表示对save、del、update开头的方法应用事物
     -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
    	<tx:attributes>
    		<tx:method name="save*" propagation="REQUIRED"/>
    		<tx:method name="del*" propagation="REQUIRED"/>
    		<tx:method name="update*" propagation="REQUIRED"/>
    	</tx:attributes>
    </tx:advice>

hibernate配置文件

<session-factory>  
                <!-- 方言类 -->  
        <property name="dialect">  
            org.hibernate.dialect.MySQLDialect  
        </property>  
        <property name="connection.url">  
                <!--连接MySQL的IP地址及端口号，注意MySQL的默认远程连接是关闭的-->  
            jdbc:mysql://localhost:3306/lfdcwtjxt  
        </property>  
        <!--连接MySQL的用户名-->  
        <property name="connection.username">root</property>  
  
        <!--连接MySQL的密码-->  
        <property name="connection.password">root</property>   
        <!--连接MySQL的驱动类名-->  
        <property name="connection.driver_class">  
            com.mysql.jdbc.Driver  
        </property>  
  		<!-- hibernate4已经不能用下面的配置了
  		<property name="current_session_context_class">thread</property> 
        <property name="org.springframework.orm.hibernate4.SpringSessionContext">thread</property>  
  		-->
        <!--以格式良好的方式显示SQL语句-->  
        <property name="format_sql">true</property>   
        <!--显示SQL语句-->     
        <property name="show_sql">true</property>  
    </session-factory>

求大神解决，小弟着急