04_删除数据

<!-- 删除用户 -->
     <delete id="deleteUserById" parameterType="java.lang.Integer">
         delete from user where id=#{id}
     </delete>

@Test
    public void testDeleteUser() throws IOException{
        //mybatis映射文件
        String resource="sqlMapConfig.xml";
        //得到mybatis映射文件
        InputStream inputStream=Resources.getResourceAsStream(resource);
        //创建会话，传递mybatis配置信息
        SqlSessionFactory sqlSessionFactory=new SqlSessionFactoryBuilder().build(inputStream);
        //通过工厂得到session
        SqlSession sqlSession=sqlSessionFactory.openSession();
        
        //传入id，删除用户
        sqlSession.delete("test.deleteUserById",2);
        
        //提交事务
        sqlSession.commit(); //这句必须要有，不然插不进去数据 
        //关闭会话
        sqlSession.close();
    }