我们再进行测试，我们这次将update语句也插入到测试语句中去，看会有什么不一样的结果

@Test public void test1(){ SqlSession sqlSession = MybatisUtil.getSqlSession(); UserMapper mapper = sqlSession.getMapper(UserMapper.class); User user1 = mapper.selectUserId(1); System.out.println(user1); System.out.println("============================="); int i = mapper.updateUser(new User(2,"二哈","789465")); User user2 = mapper.selectUserId(1); System.out.println(user2); sqlSession.close(); }

测试结果：这次很明显执行了三次sql，这就是insert，update,delete语句会刷新缓存，比如查询1号用户，然后更新2号用户，这时再查询1号用户，则会重新查询

==> Preparing: select * from USER where id=? ==> Parameters: 1(Integer) Parameters: 1(Integer)