在junit测试中运用openSessionInView
因为在spring提供的junit扩展中无法像web程序那样使用openSessionInView,
查了下官方信息，找到了如下解决方式

spring已经提供了针对此情况的应对方式,具体类为TransactionSynchronizationManager

使用此类可在事务中绑定一个hibernate的session对象,使之达到openSessionInView的效果.

具体列子:

@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = { "classpath:applicationContext.xml" })public class OpenSessionInViewTest extends AbstractTransactionalSpringContextTests {        @Resource(name="hibernateSessionFactory")private SessionFactory sessionFactory;               @Beforepublic void init() {Session s = sessionFactory.openSession();TransactionSynchronizationManager.bindResource(sessionFactory,                  new SessionHolder(s));  }        @Testpublic void testQuery() {SessionHolder holder = (SessionHolder)TransactionSynchronizationManager.getResource(sessionFactory);Session session = holder.getSession();User user= (User)session.get(User.class, "abc0003");System.out.println(user.getId());Set<Book> books= user.getBooks();for (Book book: books) {System.out.println(book.getId());}}        @Afterpublic void close() {SessionHolder holder = (SessionHolder)TransactionSynchronizationManager.getResource(sessionFactory);SessionFactoryUtils.closeSession(holder.getSession());TransactionSynchronizationManager.unbindResource(sessionFactory);  }}