我是在做spring3.2.1与hibernate4.2Final整合的时候出的这个bug，在网上找了很多资料仍然解决不了

我的这个项目只是想测试在Service层上加上一事务，当向数据库存入一个User的时候，在log里面加上记录

下面给出我的相关代码，实体类User、Logo以及相应的接口类UserDAO与LogDAO就不给出了，对于逻辑没有什么影响：

用于处理User的DAO层的类UserDAOImpl：

package com.edu.hpu.impl;

import javax.annotation.Resource;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.stereotype.Component;

import com.edu.hpu.dao.UserDAO;
import com.edu.hpu.model.User;

@Component(value="u")
public class UserDAOImpl implements UserDAO {
	
	private SessionFactory sessionFactory;

	public void save(User user) {
		Session s = sessionFactory.getCurrentSession();
		s.save(user);
	}

	public SessionFactory getSessionFactory() {
		return sessionFactory;
	}

	@Resource(name="sessionFactory")
	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

}

 用于处理Log的DAO层的类LogDAOImpl：

package com.edu.hpu.impl;

import javax.annotation.Resource;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.stereotype.Component;

import com.edu.hpu.dao.LogDAO;
import com.edu.hpu.model.Log;

@Component(value="logDAO")
public class LogDAOImpl implements LogDAO {
	
	private SessionFactory sessionFactory;

	@Override
	public void save(Log log) {
		Session s = sessionFactory.getCurrentSession();
		s.save(log);
	}

	public SessionFactory getSessionFactory() {
		return sessionFactory;
	}

	@Resource
	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

}

 用于联合处理User与Log的Service层次的类UserService类：

package com.edu.hpu.service;

import javax.annotation.Resource;

import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;

import com.edu.hpu.dao.LogDAO;
import com.edu.hpu.dao.UserDAO;
import com.edu.hpu.model.Log;
import com.edu.hpu.model.User;

@Component(value="userService")
@Scope(value="singleton")
public class UserService {
	
	private UserDAO userDAO;
	private LogDAO logDAO;
	
	@Transactional
	public void save(User user) {
		userDAO.save(user);
		Log log = new Log();
		log.setMsg("a user been add into database");
		logDAO.save(log);
	}

	public UserDAO getUserDAO() {
		return userDAO;
	}
	
	@Resource(name="u")
	public void setUserDAO(UserDAO userDAO) {
		this.userDAO = userDAO;
	}

	public LogDAO getLogDAO() {
		return logDAO;
	}

	@Resource(name="logDAO")
	public void setLogDAO(LogDAO logDAO) {
		this.logDAO = logDAO;
	}
}

 beans.xml里面的配置信息：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context.xsd
           http://www.springframework.org/schema/aop
           http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
           http://www.springframework.org/schema/tx
  		   http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
	<context:annotation-config />
	<context:component-scan base-package="com.edu.hpu" />
	
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<property name="driverClassName" value="${jdbc.driverClassName}" />
		<property name="url" value="${jdbc.url}" />
		<property name="username" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />
	</bean>
	<context:property-placeholder location="jdbc.properties" />

	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
		<!-- 声明可以使用Annotation，而不是使用LocalSessionFactoryBean -->
		
		<property name="dataSource" ref="dataSource" />
		<!-- 指定数据库的连接信息，即指定数据连接池 -->
		
		<property name="annotatedClasses">
		<!-- 指定数据库中的实体 -->
			<list>
				<value>com.edu.hpu.model.User</value>
				<value>com.edu.hpu.model.Log</value>
			</list>
		</property>
		
		<property name="hibernateProperties">
		<!-- 指定方言等属性 -->
			<props>
				<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format_sql">true</prop>
			</props>
		</property>
		
	</bean>

	<bean id="transactionManager"
		class="org.springframework.orm.hibernate4.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>
	
	<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

 用于测试的Junit类：

package com.edu.hpu.sevice;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.edu.hpu.model.User;
import com.edu.hpu.service.UserService;

public class TestUser {

	@Test
	public void testSave() {
		ApplicationContext acx = new ClassPathXmlApplicationContext("beans.xml");
		
		UserService service = (UserService)acx.getBean("userService");
		
		service.save(new User());
		
	}
	
}

 出现的问题情况如下，bug信息：

org.hibernate.HibernateException: No Session found for current thread
	at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:97)
	at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:980)
	at com.edu.hpu.impl.UserDAOImpl.save(UserDAOImpl.java:18)
	at com.edu.hpu.service.UserService.save(UserService.java:23)
	at com.edu.hpu.sevice.TestUser.testSave(TestUser.java:18)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

 出现bug的地点，是在getCurrentSession()这个地方。。求指教。。。