junit实现opensessionInView保持session
参考：http://allenwei.iteye.com/blog/227920
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private SessionFactory sessionFactory; //重写setUp方法protected void setUp() throws Exception {super.setUp();sessionFactory = (SessionFactory) SpringContext.getInstance().getBean("sessionFactory");//SpringContext是自己创建spring工具类Session s = sessionFactory.openSession();TransactionSynchronizationManager.bindResource(sessionFactory,new SessionHolder(s));}protected void tearDown() throws Exception {super.tearDown();SessionHolder holder = (SessionHolder) TransactionSynchronizationManager.getResource(sessionFactory);Session s = holder.getSession();try {s.flush();} catch (Throwable e) {e.printStackTrace();}TransactionSynchronizationManager.unbindResource(sessionFactory);SessionFactoryUtils.closeSession(s);}public class SpringContext {private static SpringContext m_instance;private static String[] contextFiles = new String[] { "applicationContext.xml" };private ApplicationContext ctx;public SpringContext() {ctx = new ClassPathXmlApplicationContext(contextFiles);}public SpringContext(String[] setting) {ctx = new ClassPathXmlApplicationContext(setting);}public synchronized static SpringContext getInstance() {if (m_instance == null) {m_instance = new SpringContext(contextFiles);}return m_instance;}public Object getBean(String beanId) {Object o = ctx.getBean(beanId);if (o instanceof TransactionProxyFactoryBean) {TransactionProxyFactoryBean factoryBean = (TransactionProxyFactoryBean) o;o = factoryBean.getObject();}return o;}}?