spring中的事务管理

public interface PlatformTransactionManager {
    TransactionStatus getTransaction(TransactionDefinition var1) throws TransactionException;

    void commit(TransactionStatus var1) throws TransactionException;

    void rollback(TransactionStatus var1) throws TransactionException;
}

@EnableTransactionManagement  //开启事务管理
@ComponentScan("com.springTx") //扫描组件，这里扫描UserDao和UserService
@Configuration
public class MainTxConfig {

    /**
     * 配置数据源
     * @return
     * @throws Exception
     */
        @Bean
        public DataSource dataSorce() throws Exception {
            ComboPooledDataSource comboPooledDataSource = new ComboPooledDataSource();
            comboPooledDataSource.setUser("root");
            comboPooledDataSource.setPassword("123456");
            comboPooledDataSource.setDriverClass("com.mysql.jdbc.Driver");
            comboPooledDataSource.setJdbcUrl("jdbc:mysql://localhost:3306/study");
            return comboPooledDataSource;
        }

        /**
         * jdbc模板操作数据库，这里需要获取到数据源，dataSorce()是从容器中获取已有的组件，而不是重新又创建一个数据源
         * @return
         * @throws Exception
         */
        @Bean
        public JdbcTemplate jdbcTemplate() throws Exception {
            return new JdbcTemplate(dataSorce());
        }

        @Bean
        public PlatformTransactionManager platformTransactionManager() throws Exception {
            return new DataSourceTransactionManager(dataSorce());
        }
}

@Service
public class UserService {

    @Autowired
    private UserDao userDao;

    @Transactional
    public void  insertUser(){
        userDao.insert();
        int n = 1/0;
        System.out.println("插入成功");
    }
}

@Repository
public class UserDao {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    public void  insert(){
        String sql = "insert into user (name,age) value(?,?)";
        String name = UUID.randomUUID().toString().substring(1,7);
        jdbcTemplate.update(sql,name, 20);
    }
}

public class Txtest {
    @Test
    public void  test(){
        //创建容器
        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainTxConfig.class);
        UserService userService = applicationContext.getBean(UserService.class);
        userService.insertUser();
        applicationContext.close();
    }
}