Lazy Initialization and the DAO pattern with Hibernate and Spring (3)

最新推荐文章于 2025-08-10 11:14:23 发布

hivvyeah

最新推荐文章于 2025-08-10 11:14:23 发布

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文章标签： initialization spring hibernate dao session exception

本文链接：https://blog.youkuaiyun.com/hivvyeah/article/details/5992006

本文介绍了一种使用懒加载策略进行单元测试的方法。通过重写JUnit的setUp和tearDown方法，实现了一个抽象的测试类MyLazyTestCase，该类可以方便地用于所有测试用例中。文章详细展示了如何利用Spring框架获取SessionFactory和Session，以及如何管理和释放资源。

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Being Lazy in your Unit Tests

Last but not least, we'll need the ability to test our lazy application from J-Unit. This is easily done by overriding the setUp and tearDown methods of the TestCase class. I prefer to keep this code in a convenient abstract TestCase class for all of my tests to extend.

public abstract class MyLazyTestCase extends TestCase { private SessionFactory sessionFactory; private Session session; public void setUp() throws Exception { super.setUp(); SessionFactory sessionFactory = (SessionFactory) getBean("sessionFactory"); session = SessionFactoryUtils.getSession(sessionFactory, true); Session s = sessionFactory.openSession(); TransactionSynchronizationManager.bindResource(sessionFactory, new SessionHolder(s)); }

protected Object getBean(String beanName) { //Code to get objects from Spring application context } public void tearDown() throws Exception { super.tearDown(); SessionHolder holder = (SessionHolder) TransactionSynchronizationManager.getResource(sessionFactory); Session s = holder.getSession(); s.flush(); TransactionSynchronizationManager.unbindResource(sessionFactory); SessionFactoryUtils.closeSessionIfNecessary(s, sessionFactory); } }