作者：郭無心
鏈接：https://www.zhihu.com/question/30206875/answer/84675373
來源：知乎
著作權歸作者所有。商業轉載請聯系作者獲得授權，非商業轉載請注明出處。

http://czj4451.iteye.com/blog/2037759 mybatis的事務管理：
一、單獨使用mybatis組件，使用SqlSession來處理事務： public class MyBatisTxTest {private static SqlSessionFactory sqlSessionFactory;private static Reader reader;@BeforeClasspublic static void setUpBeforeClass() throws Exception {try {reader = Resources.getResourceAsReader("Configuration.xml");sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);} finally {if (reader != null) {reader.close();}}}@Testpublic void updateUserTxTest() {SqlSession session = sqlSessionFactory.openSession(false); // 打開會話，事務開始try {IUserMapper mapper = session.getMapper(IUserMapper.class);User user = new User(9, "Test transaction");int affectedCount = mapper.updateUser(user); // 因后面的異常而未執行commit語句User user = new User(10, "Test transaction continuously");int affectedCount2 = mapper.updateUser(user2); // 因后面的異常而未執行commit語句int i = 2 / 0; // 觸發運行時異常session.commit(); // 提交會話，即事務提交} finally {session.close(); // 關閉會話，釋放資源}} }

測試會發現數據沒有被修改

和Spring集成后，使用Spring的事務管理： <!-- 數據源 --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" lazy-init="true"><property name="driverClassName"><value>org.logicalcobwebs.proxool.ProxoolDriver</value></property><property name="url"><value>proxool.gcld</value></property> </bean><!-- sessionFactory --> <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="configLocation" value="classpath:mybatis-config.xml"></property><property name="dataSource" ref="dataSource"/> </bean><!-- 事務管理器 --> <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 事務注解驅動，標注@Transactional的類和方法將具有事務性 --> <tx:annotation-driven transaction-manager="txManager" /> <bean id="userService" class="com.john.hbatis.service.UserService" /> @Service("userService") public class UserService {@AutowiredIUserMapper mapper;public int batchUpdateUsersWhenException() { // 非事務性User user = new User(9, "Before exception");int affectedCount = mapper.updateUser(user); // 執行成功User user2 = new User(10, "After exception");int i = 1 / 0; // 拋出運行時異常int affectedCount2 = mapper.updateUser(user2); // 未執行if (affectedCount == 1 && affectedCount2 == 1) {return 1;}return 0;}@Transactionalpublic int txUpdateUsersWhenException() { // 事務性User user = new User(9, "Before exception");int affectedCount = mapper.updateUser(user); // 因后面的異常而回滾User user2 = new User(10, "After exception");int i = 1 / 0; // 拋出運行時異常，事務回滾int affectedCount2 = mapper.updateUser(user2); // 未執行if (affectedCount == 1 && affectedCount2 == 1) {return 1;}return 0;} } @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = { "classpath:beans-da-tx.xml" }) public class SpringIntegrateTxTest {@ResourceUserService userService;@Testpublic void updateUsersExceptionTest() {userService.batchUpdateUsersWhenException();}@Testpublic void txUpdateUsersExceptionTest() {userService.txUpdateUsersWhenException();} } ================================================================================

<bean id="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="yourDataSource" /> </bean> @Transactional public void blabla(){ }

總結

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