問(wèn)題描述

我正在嘗試用spring、junit測(cè)試 DAO 的方法，我看到網(wǎng)上的一些做法是使用 spring 的聲明式事務(wù)管理(即@Transactional)進(jìn)行事務(wù)操作，說(shuō)是這樣在測(cè)試完成之后能夠spring會(huì)讓測(cè)試的方法回滾，從而達(dá)到測(cè)試的目的。然后我按照這一做法對(duì)dao中添加操作的方法進(jìn)行了測(cè)試，發(fā)現(xiàn)事務(wù)進(jìn)行提交后，回滾沒(méi)有成功，數(shù)據(jù)庫(kù)中多出來(lái)了我進(jìn)行測(cè)試的數(shù)據(jù)。一開(kāi)始我以為是spring沒(méi)有進(jìn)行回滾，但是后面觀察控制臺(tái)打印信息發(fā)現(xiàn)是有rollback信息的，但是為什么會(huì)失敗呢，就不清楚。我查到一些相關(guān)的方案，但是我發(fā)現(xiàn)并沒(méi)能解決我的問(wèn)題。很困擾，特來(lái)請(qǐng)教各位，望不吝指教。

以下是我的代碼和相應(yīng)配置

DAOImpl 的addUser()方法

@Override public void addUser(User u) {Session session = sessionFactory.openSession();Transaction tc = session.getTransaction();try { tc.begin(); session.save(u); tc.commit();}catch(Exception e){ tc.rollback(); e.printStackTrace();}return ; }

daos.xml 文件相應(yīng)配置

<bean class='org.springframework.orm.hibernate5.HibernateTransactionManager'><property name='sessionFactory' ref='mySessionFactory' /> </bean> <tx:annotation-driven transaction-manager='txManager' />

測(cè)試類(lèi)

@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations={'/services.xml'})@Transactional(transactionManager = 'txManager')@Rollback(true)public class UserServiceImplTest {@Autowired UserDAO userDAO; //自動(dòng)裝配userDAO@Test public void testAddUse(){User u = new User();u.setLevel(3);u.setName('ab11');u.setPassword('hh');userDAO.addUser(u);Assert.assertEquals(u.getName(), userDAO.getUserList().get(userDAO.getUserList().size()-1).getName()); }

部分控制臺(tái)打印信息

信息: Using DataSource [org.apache.commons.dbcp2.BasicDataSource@498d318c] of Hibernate SessionFactory for HibernateTransactionManager六月 02, 2017 4:46:19 下午 org.springframework.test.context.transaction.TransactionContext startTransaction信息: Began transaction (1) for test context [DefaultTestContext@52d6cd34 testClass = UserServiceImplTest, testInstance = com.dxzh.mall.serviceImpl.test.UserServiceImplTest@715d6168, testMethod = testAddUse@UserServiceImplTest, testException = [null], mergedContextConfiguration = [MergedContextConfiguration@75798d03 testClass = UserServiceImplTest, locations = ’{classpath:/services.xml}’, classes = ’{}’, contextInitializerClasses = ’[]’, activeProfiles = ’{}’, propertySourceLocations = ’{}’, propertySourceProperties = ’{}’, contextCustomizers = set[[empty]], contextLoader = ’org.springframework.test.context.support.DelegatingSmartContextLoader’, parent = [null]]]; transaction manager [org.springframework.orm.hibernate5.HibernateTransactionManager@c6634d]; rollback [true]Fri Jun 02 16:46:19 CST 2017 WARN: Establishing SSL connection without server’s identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn’t set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to ’false’. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.Hibernate: insert into user (name, password, level) values (?, ?, ?)六月 02, 2017 4:46:19 下午 org.springframework.test.context.transaction.TransactionContext endTransaction信息: Rolled back transaction for test context [DefaultTestContext@52d6cd34 testClass = UserServiceImplTest, testInstance = com.dxzh.mall.serviceImpl.test.UserServiceImplTest@715d6168, testMethod = testAddUse@UserServiceImplTest, testException = java.lang.RuntimeException, mergedContextConfiguration = [MergedContextConfiguration@75798d03 testClass = UserServiceImplTest, locations = ’{classpath:/services.xml}’, classes = ’{}’, contextInitializerClasses = ’[]’, activeProfiles = ’{}’, propertySourceLocations = ’{}’, propertySourceProperties = ’{}’, contextCustomizers = set[[empty]], contextLoader = ’org.springframework.test.context.support.DelegatingSmartContextLoader’, parent = [null]]].六月 02, 2017 4:46:19 下午 org.springframework.context.support.GenericApplicationContext doClose信息: Closing org.springframework.context.support.GenericApplicationContext@3ffc5af1: startup date [Fri Jun 02 16:46:13 CST 2017]; root of context hierarchy

問(wèn)題解答

用dbunit 結(jié)合 spring-test 去測(cè)試

Transactional是service層事務(wù)，用了就不必在DAO層寫(xiě)事務(wù)了