代码

public class OrdersMapperTest {
        private SqlSessionFactory sqlSessionFactory = null;
        /**
         * 提取sqlSessionFactory对象
         * @throws IOException 
         */
        @Before
        public void init() throws IOException{
                // 1.加载配置文件
                InputStream inputStream = Resources.getResourceAsStream("sqlMapConfig.xml");
                // 2.读取配置文件的内容
                SqlSessionFactoryBuilder builder = new SqlSessionFactoryBuilder();
                sqlSessionFactory = builder.build(inputStream);
        }


        /**
         * 测试查询全部订单数据
         */
        @Test
        public void queryAllOrdersTest(){
                // 1.创建sqlSession对象
                SqlSession sqlSession = this.sqlSessionFactory.openSession();
                // 2.使用sqlSession对象，获取mapper代理对象
                OrdersMapper mapper = sqlSession.getMapper(OrdersMapper.class);
                // 3.使用mapper对象，调用方法执行
                List<Orders> list = mapper.queryAllOrders();
                for(Orders o:list){
                        System.out.println(o);
                }
                // 4.释放资源
                sqlSession.close();
        }